new file mode 100644
--- /dev/null
+++ b/b2g/config/aries-dogfood/releng-aries-dogfood.tt
@@ -0,0 +1,16 @@
+[
+{
+"size": 80458572,
+"digest": "e5101f9dee1e462f6cbd3897ea57eede41d23981825c7b20d91d23ab461875d54d3dfc24999aa58a31e8b01f49fb3140e05ffe5af2957ef1d1afb89fd0dfe1ad",
+"algorithm": "sha512",
+"filename": "gcc.tar.xz",
+"unpack": true
+},
+{
+"size": 12057960,
+"digest": "6105d6432943141cffb40020dc5ba3a793650bdeb3af9bd5e56d3796c5f03df9962a73e521646cd71fbfb5e266c1e74716ad722fb6055589dfb7d35175bca89e",
+"algorithm": "sha512",
+"filename": "gtk3.tar.xz",
+"unpack": true
+}
+]

new file mode 100644
--- /dev/null
+++ b/b2g/config/aries-spark-ota/releng-aries-spark-ota.tt
@@ -0,0 +1,16 @@
+[
+{
+"size": 80458572,
+"digest": "e5101f9dee1e462f6cbd3897ea57eede41d23981825c7b20d91d23ab461875d54d3dfc24999aa58a31e8b01f49fb3140e05ffe5af2957ef1d1afb89fd0dfe1ad",
+"algorithm": "sha512",
+"filename": "gcc.tar.xz",
+"unpack": true
+},
+{
+"size": 12057960,
+"digest": "6105d6432943141cffb40020dc5ba3a793650bdeb3af9bd5e56d3796c5f03df9962a73e521646cd71fbfb5e266c1e74716ad722fb6055589dfb7d35175bca89e",
+"algorithm": "sha512",
+"filename": "gtk3.tar.xz",
+"unpack": true
+}
+]

--- a/b2g/config/aries/config.json
+++ b/b2g/config/aries/config.json
@@ -34,17 +34,17 @@
         "VARIANT": "user",
         "MOZILLA_OFFICIAL": "1",
         "MOZ_TELEMETRY_REPORTING": "1",
         "B2G_UPDATE_CHANNEL": "nightly",
         "GAIA_KEYBOARD_LAYOUTS": "en,pt-BR,es,de,fr,pl,zh-Hans-Pinyin,zh-Hant-Zhuyin,en-Dvorak"
     },
     "b2g_manifest": "aries.xml",
     "b2g_manifest_intree": true,
-    "additional_source_tarballs": ["backup-aries.tar.xz"],
+    "additional_source_tarballs": [],
     "gecko_l10n_root": "https://hg.mozilla.org/l10n-central",
     "gaia": {
         "l10n": {
             "vcs": "hgtool",
             "root": "https://hg.mozilla.org/gaia-l10n"
         }
     }
 }

--- a/b2g/config/aries/releng-aries.tt
+++ b/b2g/config/aries/releng-aries.tt
@@ -1,16 +1,16 @@
 [
 {
-"size": 135359412,
-"digest": "45e677c9606cc4eec44ef4761df47ff431df1ffad17a5c6d21ce700a1c47f79e87a4aa9f30ae47ff060bd64f5b775d995780d88211f9a759ffa0d076beb4816b",
-"algorithm": "sha512",
-"filename": "backup-aries.tar.xz",
-"comment": "v18D"
-},
-{
 "size": 80458572,
 "digest": "e5101f9dee1e462f6cbd3897ea57eede41d23981825c7b20d91d23ab461875d54d3dfc24999aa58a31e8b01f49fb3140e05ffe5af2957ef1d1afb89fd0dfe1ad",
 "algorithm": "sha512",
 "filename": "gcc.tar.xz",
-"unpack": "True"
+"unpack": true
+},
+{
+"size": 12057960,
+"digest": "6105d6432943141cffb40020dc5ba3a793650bdeb3af9bd5e56d3796c5f03df9962a73e521646cd71fbfb5e266c1e74716ad722fb6055589dfb7d35175bca89e",
+"algorithm": "sha512",
+"filename": "gtk3.tar.xz",
+"unpack": true
 }
 ]

new file mode 100644
--- /dev/null
+++ b/b2g/config/dolphin-512/releng-dolphin-512.tt
@@ -0,0 +1,16 @@
+[
+{
+"size": 80458572,
+"digest": "e5101f9dee1e462f6cbd3897ea57eede41d23981825c7b20d91d23ab461875d54d3dfc24999aa58a31e8b01f49fb3140e05ffe5af2957ef1d1afb89fd0dfe1ad",
+"algorithm": "sha512",
+"filename": "gcc.tar.xz",
+"unpack": true
+},
+{
+"size": 12057960,
+"digest": "6105d6432943141cffb40020dc5ba3a793650bdeb3af9bd5e56d3796c5f03df9962a73e521646cd71fbfb5e266c1e74716ad722fb6055589dfb7d35175bca89e",
+"algorithm": "sha512",
+"filename": "gtk3.tar.xz",
+"unpack": true
+}
+]

--- a/b2g/config/dolphin/releng-dolphin.tt
+++ b/b2g/config/dolphin/releng-dolphin.tt
@@ -1,9 +1,16 @@
 [
 {
 "size": 80458572,
 "digest": "e5101f9dee1e462f6cbd3897ea57eede41d23981825c7b20d91d23ab461875d54d3dfc24999aa58a31e8b01f49fb3140e05ffe5af2957ef1d1afb89fd0dfe1ad",
 "algorithm": "sha512",
 "filename": "gcc.tar.xz",
-"unpack": "True"
+"unpack": true
+},
+{
+"size": 12057960,
+"digest": "6105d6432943141cffb40020dc5ba3a793650bdeb3af9bd5e56d3796c5f03df9962a73e521646cd71fbfb5e266c1e74716ad722fb6055589dfb7d35175bca89e",
+"algorithm": "sha512",
+"filename": "gtk3.tar.xz",
+"unpack": true
 }
 ]

new file mode 100644
--- /dev/null
+++ b/b2g/config/flame-kk-ota/releng-flame-kk-ota.tt
@@ -0,0 +1,16 @@
+[
+{
+"size": 80458572,
+"digest": "e5101f9dee1e462f6cbd3897ea57eede41d23981825c7b20d91d23ab461875d54d3dfc24999aa58a31e8b01f49fb3140e05ffe5af2957ef1d1afb89fd0dfe1ad",
+"algorithm": "sha512",
+"filename": "gcc.tar.xz",
+"unpack": true
+},
+{
+"size": 12057960,
+"digest": "6105d6432943141cffb40020dc5ba3a793650bdeb3af9bd5e56d3796c5f03df9962a73e521646cd71fbfb5e266c1e74716ad722fb6055589dfb7d35175bca89e",
+"algorithm": "sha512",
+"filename": "gtk3.tar.xz",
+"unpack": true
+}
+]

--- a/b2g/config/flame-kk/config.json
+++ b/b2g/config/flame-kk/config.json
@@ -36,17 +36,17 @@
         "VARIANT": "userdebug",
         "MOZILLA_OFFICIAL": "1",
         "MOZ_TELEMETRY_REPORTING": "1",
         "B2G_UPDATE_CHANNEL": "nightly",
         "GAIA_KEYBOARD_LAYOUTS": "en,pt-BR,es,de,fr,pl,zh-Hans-Pinyin,zh-Hant-Zhuyin,en-Dvorak"
     },
     "b2g_manifest": "flame-kk.xml",
     "b2g_manifest_intree": true,
-    "additional_source_tarballs": ["backup-flame.tar.xz"],
+    "additional_source_tarballs": [],
     "gecko_l10n_root": "https://hg.mozilla.org/l10n-central",
     "gaia": {
         "l10n": {
             "vcs": "hgtool",
             "root": "https://hg.mozilla.org/gaia-l10n"
         }
     }
 }

--- a/b2g/config/flame-kk/releng-flame-kk.tt
+++ b/b2g/config/flame-kk/releng-flame-kk.tt
@@ -1,16 +1,16 @@
 [
 {
-"size": 135359412,
-"digest": "45e677c9606cc4eec44ef4761df47ff431df1ffad17a5c6d21ce700a1c47f79e87a4aa9f30ae47ff060bd64f5b775d995780d88211f9a759ffa0d076beb4816b",
-"algorithm": "sha512",
-"filename": "backup-flame.tar.xz",
-"comment": "v18D"
-},
-{
 "size": 80458572,
 "digest": "e5101f9dee1e462f6cbd3897ea57eede41d23981825c7b20d91d23ab461875d54d3dfc24999aa58a31e8b01f49fb3140e05ffe5af2957ef1d1afb89fd0dfe1ad",
 "algorithm": "sha512",
 "filename": "gcc.tar.xz",
-"unpack": "True"
+"unpack": true
+},
+{
+"size": 12057960,
+"digest": "6105d6432943141cffb40020dc5ba3a793650bdeb3af9bd5e56d3796c5f03df9962a73e521646cd71fbfb5e266c1e74716ad722fb6055589dfb7d35175bca89e",
+"algorithm": "sha512",
+"filename": "gtk3.tar.xz",
+"unpack": true
 }
 ]

--- a/b2g/config/flame/config.json
+++ b/b2g/config/flame/config.json
@@ -35,17 +35,17 @@
         "VARIANT": "user",
         "MOZILLA_OFFICIAL": "1",
         "MOZ_TELEMETRY_REPORTING": "1",
         "B2G_UPDATE_CHANNEL": "nightly",
         "GAIA_KEYBOARD_LAYOUTS": "en,pt-BR,es,de,fr,pl,zh-Hans-Pinyin,zh-Hant-Zhuyin,en-Dvorak"
     },
     "b2g_manifest": "flame.xml",
     "b2g_manifest_intree": true,
-    "additional_source_tarballs": ["backup-flame.tar.xz"],
+    "additional_source_tarballs": [],
     "gecko_l10n_root": "https://hg.mozilla.org/l10n-central",
     "gaia": {
         "l10n": {
             "vcs": "hgtool",
             "root": "https://hg.mozilla.org/gaia-l10n"
         }
     }
 }

--- a/b2g/config/flame/releng-flame.tt
+++ b/b2g/config/flame/releng-flame.tt
@@ -1,14 +1,16 @@
 [
-{"size": 149922032,
-"digest": "8d1a71552ffee561e93b5b3f1bb47866592ab958f908007c75561156430eb1b85a265bfc4dc2038e58dda0264daa9854877a84ef3b591c9ac2f1ab97c098e61e",
-"filename": "backup-flame.tar.xz",
-"algorithm": "sha512"
-},
 {
 "size": 80458572,
 "digest": "e5101f9dee1e462f6cbd3897ea57eede41d23981825c7b20d91d23ab461875d54d3dfc24999aa58a31e8b01f49fb3140e05ffe5af2957ef1d1afb89fd0dfe1ad",
 "algorithm": "sha512",
 "filename": "gcc.tar.xz",
-"unpack": "True"
+"unpack": true
+},
+{
+"size": 12057960,
+"digest": "6105d6432943141cffb40020dc5ba3a793650bdeb3af9bd5e56d3796c5f03df9962a73e521646cd71fbfb5e266c1e74716ad722fb6055589dfb7d35175bca89e",
+"algorithm": "sha512",
+"filename": "gtk3.tar.xz",
+"unpack": true
 }
 ]

--- a/b2g/config/nexus-4/releng-mako.tt
+++ b/b2g/config/nexus-4/releng-mako.tt
@@ -1,28 +1,17 @@
 [
 {
-"size": 13111,
-"digest": "09373556ddb4325897b9e008184228f9088b4c8c22bacf4fa2d39793ecfd264316ad69c2bc8082229ad7fdb80f89154c7b995a60f9b18beb1847e7111e7e69b2",
-"algorithm": "sha512",
-"filename": "broadcom-mako-jwr66v-cbde0d61.tgz"
-},
-{
-"size": 12658359,
-"digest": "2483df1a949df53d02ca33a87731cedd8f7cd07114d723bde1addf63fd71154c23b6f11f64f390b9849121725fb53a402db8df2f96a3673ec52416f45260f79d",
-"algorithm": "sha512",
-"filename": "qcom-mako-jwr66v-30ef957c.tgz"
-},
-{
-"size": 378532,
-"digest": "27aced8feb0e757d61df37839e62410ff30a059cfa8f04897d29ab74b787c765313acf904b1f9cf311c3e682883514df7da54197665251ef9b8bdad6bd0f62c5",
-"algorithm": "sha512",
-"filename": "lge-mako-jwr66v-985845e4.tgz"
-},
-{
 "size": 80458572,
 "digest": "e5101f9dee1e462f6cbd3897ea57eede41d23981825c7b20d91d23ab461875d54d3dfc24999aa58a31e8b01f49fb3140e05ffe5af2957ef1d1afb89fd0dfe1ad",
 "algorithm": "sha512",
 "filename": "gcc.tar.xz",
-"unpack": "True"
+"unpack": true
+},
+{
+"size": 12057960,
+"digest": "6105d6432943141cffb40020dc5ba3a793650bdeb3af9bd5e56d3796c5f03df9962a73e521646cd71fbfb5e266c1e74716ad722fb6055589dfb7d35175bca89e",
+"algorithm": "sha512",
+"filename": "gtk3.tar.xz",
+"unpack": true
 }
 ]
 

--- a/b2g/config/nexus-5-l/releng-nexus5.tt
+++ b/b2g/config/nexus-5-l/releng-nexus5.tt
@@ -1,7 +1,15 @@
 [{
 "size": 80458572,
 "digest": "e5101f9dee1e462f6cbd3897ea57eede41d23981825c7b20d91d23ab461875d54d3dfc24999aa58a31e8b01f49fb3140e05ffe5af2957ef1d1afb89fd0dfe1ad",
 "algorithm": "sha512",
 "filename": "gcc.tar.xz",
-"unpack": "True"
-}]
+"unpack": true
+},
+{
+"size": 12057960,
+"digest": "6105d6432943141cffb40020dc5ba3a793650bdeb3af9bd5e56d3796c5f03df9962a73e521646cd71fbfb5e266c1e74716ad722fb6055589dfb7d35175bca89e",
+"algorithm": "sha512",
+"filename": "gtk3.tar.xz",
+"unpack": true
+}
+]

--- a/testing/taskcluster/scripts/phone-builder/pre-build.sh
+++ b/testing/taskcluster/scripts/phone-builder/pre-build.sh
@@ -21,16 +21,19 @@ test $VARIANT
 # Figure out where the remote manifest is so we can use caches for it.
 MANIFEST=$(repository-url.py $GECKO_HEAD_REPOSITORY $GECKO_HEAD_REV b2g/config/$TARGET/sources.xml)
 tc-vcs repo-checkout $WORKSPACE/B2G https://git.mozilla.org/b2g/B2G.git $MANIFEST
 
 # Ensure symlink has been created to gecko...
 rm -f $WORKSPACE/B2G/gecko
 ln -s $WORKSPACE/gecko $WORKSPACE/B2G/gecko
 
+### Install package dependencies
+. ../builder/install-packages.sh $WORKSPACE/gecko
+
 debug_flag=""
 if [ 0$B2G_DEBUG -ne 0 ]; then
   debug_flag='--debug'
 fi
 
 backup_file=$(aws --output=text s3 ls s3://b2g-phone-backups/$TARGET/ | tail -1 | awk '{print $NF}')
 
 if echo $backup_file | grep '\.tar\.bz2'; then

--- a/testing/taskcluster/tasks/builds/b2g_aries_spark_debug.yml
+++ b/testing/taskcluster/tasks/builds/b2g_aries_spark_debug.yml
@@ -17,16 +17,17 @@ task:
       build-aries-debug-objdir-gecko-{{project}}: /home/worker/objdir-gecko
     env:
       TARGET: 'aries'
       DEBUG: 0
       VARIANT: userdebug
       GAIA_OPTIMIZE: '1'
       B2G_SYSTEM_APPS: '1'
       MOZHARNESS_CONFIG: b2g/taskcluster-spark.py
+      TOOLTOOL_MANIFEST: 'b2g/config/aries/releng-aries.tt'
     command:
       - >
         checkout-gecko workspace &&
         cd ./workspace/gecko/testing/taskcluster/scripts/phone-builder &&
         buildbot_step 'Build' ./build-phone.sh $HOME/workspace
   extra:
     treeherderEnv:
       - production

--- a/testing/taskcluster/tasks/builds/b2g_aries_spark_dogfood.yml
+++ b/testing/taskcluster/tasks/builds/b2g_aries_spark_dogfood.yml
@@ -13,16 +13,17 @@ task:
     cache:
       build-aries-spark-dogfood: /home/worker/workspace
       build-aries-spark-dogfood-objdir-gecko-{{project}}: /home/worker/objdir-gecko
     env:
       VARIANT: userdebug
       DOGFOOD: 1
       HARDWARE_COMPOSER: 0
       MOZHARNESS_CONFIG: b2g/taskcluster-spark-dogfood.py
+      TOOLTOOL_MANIFEST: 'b2g/config/aries-dogfood/releng-aries-dogfood.tt'
   extra:
     treeherderEnv:
       - production
       - staging
     treeherder:
       symbol: B
       groupSymbol: Aries-DogFood
       groupName: Aries Device Image

--- a/testing/taskcluster/tasks/builds/b2g_aries_spark_eng.yml
+++ b/testing/taskcluster/tasks/builds/b2g_aries_spark_eng.yml
@@ -12,16 +12,17 @@ task:
 
   payload:
     cache:
       build-aries-eng: /home/worker/workspace
       build-aries-eng-objdir-gecko-{{project}}: /home/worker/objdir-gecko
     env:
       TARGET: 'aries'
       MOZHARNESS_CONFIG: b2g/taskcluster-spark.py
+      TOOLTOOL_MANIFEST: 'b2g/config/aries/releng-aries.tt'
   extra:
     treeherderEnv:
       - production
       - staging
     treeherder:
       symbol: Be
       groupSymbol: Aries
       groupName: Aries Device Image

--- a/testing/taskcluster/tasks/builds/b2g_aries_spark_opt.yml
+++ b/testing/taskcluster/tasks/builds/b2g_aries_spark_opt.yml
@@ -17,16 +17,17 @@ task:
       build-aries-opt-objdir-gecko-{{project}}: /home/worker/objdir-gecko
     env:
       TARGET: 'aries'
       DEBUG: 0
       VARIANT: user
       GAIA_OPTIMIZE: '1'
       B2G_SYSTEM_APPS: '1'
       MOZHARNESS_CONFIG: b2g/taskcluster-spark.py
+      TOOLTOOL_MANIFEST: 'b2g/config/aries/releng-aries.tt'
     command:
       - >
         checkout-gecko workspace &&
         cd ./workspace/gecko/testing/taskcluster/scripts/phone-builder &&
         buildbot_step 'Build' ./build-phone.sh $HOME/workspace
   extra:
     treeherderEnv:
       - production

--- a/testing/taskcluster/tasks/builds/b2g_aries_spark_ota_debug.yml
+++ b/testing/taskcluster/tasks/builds/b2g_aries_spark_ota_debug.yml
@@ -11,9 +11,10 @@ task:
     - 'docker-worker:cache:build-aries-spark-ota-debug-objdir-gecko-{{project}}'
   payload:
     cache:
       build-aries-spark-ota-debug: /home/worker/workspace
       build-aries-spark-ota-debug-objdir-gecko-{{project}}: /home/worker/objdir-gecko
     env:
       VARIANT: userdebug
       B2G_DEBUG: 0
+      TOOLTOOL_MANIFEST: 'b2g/config/aries-spark-ota/releng-aries-spark-ota.tt'
 

--- a/testing/taskcluster/tasks/builds/b2g_aries_spark_ota_opt.yml
+++ b/testing/taskcluster/tasks/builds/b2g_aries_spark_ota_opt.yml
@@ -10,9 +10,9 @@ task:
     - 'docker-worker:cache:build-aries-spark-ota-user'
     - 'docker-worker:cache:build-aries-spark-ota-user-objdir-gecko-{{project}}'
   payload:
     cache:
       build-aries-spark-ota-user: /home/worker/workspace
       build-aries-spark-ota-user-objdir-gecko-{{project}}: /home/worker/objdir-gecko
     env:
       VARIANT: user
-
+      TOOLTOOL_MANIFEST: 'b2g/config/aries-spark-ota/releng-aries-spark-ota.tt'

--- a/testing/taskcluster/tasks/builds/b2g_dolphin_512_eng.yml
+++ b/testing/taskcluster/tasks/builds/b2g_dolphin_512_eng.yml
@@ -15,9 +15,9 @@ task:
         platform: b2g-device-image
 
   payload:
     cache:
       build-dolphin-512-eng: /home/worker/workspace
     env:
       TARGET: 'dolphin-512'
       VARIANT: eng
-
+      TOOLTOOL_MANIFEST: 'b2g/config/dolphin-512/releng-dolphin-512.tt'

--- a/testing/taskcluster/tasks/builds/b2g_dolphin_512_opt.yml
+++ b/testing/taskcluster/tasks/builds/b2g_dolphin_512_opt.yml
@@ -13,8 +13,9 @@ task:
       machine:
         platform: b2g-device-image
 
   payload:
     cache:
       build-dolphin-512-opt: /home/worker/workspace
     env:
       TARGET: 'dolphin-512'
+      TOOLTOOL_MANIFEST: 'b2g/config/dolphin-512/releng-dolphin-512.tt'
\ No newline at end of file

--- a/testing/taskcluster/tasks/builds/b2g_dolphin_eng.yml
+++ b/testing/taskcluster/tasks/builds/b2g_dolphin_eng.yml
@@ -15,8 +15,9 @@ task:
         platform: b2g-device-image
 
   payload:
     cache:
       build-dolphin-eng: /home/worker/workspace
     env:
       TARGET: 'dolphin'
       VARIANT: eng
+      TOOLTOOL_MANIFEST: 'b2g/config/dolphin/releng-dolphin.tt'
\ No newline at end of file

--- a/testing/taskcluster/tasks/builds/b2g_dolphin_opt.yml
+++ b/testing/taskcluster/tasks/builds/b2g_dolphin_opt.yml
@@ -13,9 +13,9 @@ task:
       machine:
         platform: b2g-device-image
 
   payload:
     cache:
       build-dolphin-opt: /home/worker/workspace
     env:
       TARGET: 'dolphin'
-
+      TOOLTOOL_MANIFEST: 'b2g/config/dolphin/releng-dolphin.tt'

--- a/testing/taskcluster/tasks/builds/b2g_flame_kk_debug.yml
+++ b/testing/taskcluster/tasks/builds/b2g_flame_kk_debug.yml
@@ -14,16 +14,17 @@ task:
   payload:
     cache:
       build-flame-kk-debug: /home/worker/workspace
       build-flame-kk-debug-objdir-gecko-{{project}}: /home/worker/objdir-gecko
     env:
       TARGET: 'flame-kk'
       DEBUG: 0
       VARIANT: userdebug
+      TOOLTOOL_MANIFEST: 'b2g/config/flame-kk/releng-flame-kk.tt'
     command:
       - >
         checkout-gecko workspace &&
         cd ./workspace/gecko/testing/taskcluster/scripts/phone-builder &&
         buildbot_step 'Build' ./build-phone.sh $HOME/workspace
   extra:
     treeherderEnv:
       - production

--- a/testing/taskcluster/tasks/builds/b2g_flame_kk_eng.yml
+++ b/testing/taskcluster/tasks/builds/b2g_flame_kk_eng.yml
@@ -11,16 +11,17 @@ task:
     name: '[TC] B2G Flame KK Eng'
 
   payload:
     cache:
       build-flame-kk-eng: /home/worker/workspace
       build-flame-kk-eng-objdir-gecko-{{project}}: /home/worker/objdir-gecko
     env:
       TARGET: 'flame-kk'
+      TOOLTOOL_MANIFEST: 'b2g/config/flame-kk/releng-flame-kk.tt'
   extra:
     treeherderEnv:
       - production
       - staging
     treeherder:
       symbol: Be
       groupSymbol: Flame-KK
       groupName: Flame KitKat Device Image

--- a/testing/taskcluster/tasks/builds/b2g_flame_kk_opt.yml
+++ b/testing/taskcluster/tasks/builds/b2g_flame_kk_opt.yml
@@ -13,16 +13,17 @@ task:
 
   payload:
     cache:
       build-flame-kk-opt: /home/worker/workspace
       build-flame-kk-opt-objdir-gecko-{{project}}: /home/worker/objdir-gecko
     env:
       TARGET: 'flame-kk'
       DEBUG: 0
+      TOOLTOOL_MANIFEST: 'b2g/config/flame-kk/releng-flame-kk.tt'
     command:
       - >
         checkout-gecko workspace &&
         cd ./workspace/gecko/testing/taskcluster/scripts/phone-builder &&
         buildbot_step 'Build' ./build-phone.sh $HOME/workspace
   extra:
     treeherderEnv:
       - production

--- a/testing/taskcluster/tasks/builds/b2g_flame_kk_ota_debug.yml
+++ b/testing/taskcluster/tasks/builds/b2g_flame_kk_ota_debug.yml
@@ -12,8 +12,9 @@ task:
 
   payload:
     cache:
       build-flame-kk-ota-debug: /home/worker/workspace
       build-flame-kk-ota-debug-objdir-gecko-{{project}}: /home/worker/objdir-gecko
     env:
       VARIANT: userdebug
       B2G_DEBUG: 0
+      TOOLTOOL_MANIFEST: 'b2g/config/flame-kk-ota/releng-flame-kk-ota.tt'
\ No newline at end of file

--- a/testing/taskcluster/tasks/builds/b2g_flame_kk_ota_opt.yml
+++ b/testing/taskcluster/tasks/builds/b2g_flame_kk_ota_opt.yml
@@ -11,8 +11,9 @@ task:
     - 'docker-worker:cache:build-flame-kk-ota-user-objdir-gecko-{{project}}'
 
   payload:
     cache:
       build-flame-kk-ota-user: /home/worker/workspace
       build-flame-kk-ota-user-objdir-gecko-{{project}}: /home/worker/objdir-gecko
     env:
       VARIANT: user
+      TOOLTOOL_MANIFEST: 'b2g/config/flame-kk-ota/releng-flame-kk-ota.tt'
\ No newline at end of file

--- a/testing/taskcluster/tasks/builds/b2g_flame_kk_spark_eng.yml
+++ b/testing/taskcluster/tasks/builds/b2g_flame_kk_spark_eng.yml
@@ -12,16 +12,17 @@ task:
 
   payload:
     cache:
       build-flame-kk-spark-eng: /home/worker/workspace
       build-flame-kk-spark-eng-objdir-gecko-{{project}}: /home/worker/objdir-gecko
     env:
       TARGET: 'flame-kk'
       MOZHARNESS_CONFIG: b2g/taskcluster-spark.py
+      TOOLTOOL_MANIFEST: 'b2g/config/flame-kk/releng-flame-kk.tt'
   extra:
     treeherderEnv:
       - staging
     treeherder:
       symbol: Be
       groupSymbol: Flame-KK-spark
       groupName: Flame KitKat Device Image
       machine:

--- a/testing/taskcluster/tasks/builds/b2g_nexus_4_eng.yml
+++ b/testing/taskcluster/tasks/builds/b2g_nexus_4_eng.yml
@@ -10,16 +10,17 @@ task:
   metadata:
     name: '[TC] B2G Nexus 4 Eng'
   payload:
     cache:
       build-nexus-4-eng: /home/worker/object-folder
     env:
       TARGET: 'nexus-4'
       DEBUG: 0
+      TOOLTOOL_MANIFEST: 'b2g/config/nexus-4/releng-mako.tt'
     command:
       - >
         checkout-gecko workspace &&
         cd ./workspace/gecko/testing/taskcluster/scripts/phone-builder &&
         buildbot_step 'Build' ./build-phone.sh $HOME/workspace
   extra:
     treeherderEnv:
       - production

--- a/testing/taskcluster/tasks/builds/b2g_nexus_4_user.yml
+++ b/testing/taskcluster/tasks/builds/b2g_nexus_4_user.yml
@@ -11,16 +11,17 @@ task:
     name: '[TC] B2G Nexus 4 User'
 
   payload:
     cache:
       build-nexus-4-user: /home/worker/object-folder
     env:
       TARGET: 'nexus-4'
       DEBUG: 0
+      TOOLTOOL_MANIFEST: 'b2g/config/nexus-4/releng-mako.tt'
     command:
       - >
         checkout-gecko workspace &&
         cd ./workspace/gecko/testing/taskcluster/scripts/phone-builder &&
         buildbot_step 'Build' ./build-phone.sh $HOME/workspace
   extra:
     treeherderEnv:
       - production

--- a/testing/taskcluster/tasks/builds/b2g_nexus_5l_eng.yml
+++ b/testing/taskcluster/tasks/builds/b2g_nexus_5l_eng.yml
@@ -10,16 +10,17 @@ task:
   metadata:
     name: '[TC] B2G Nexus 5-L Eng'
   payload:
     cache:
       build-nexus-5-l-eng: /home/worker/object-folder
     env:
       TARGET: 'nexus-5-l'
       DEBUG: 0
+      TOOLTOOL_MANIFEST: 'b2g/config/nexus-5-l/releng-nexus5.tt'
     command:
       - >
         checkout-gecko workspace &&
         cd ./workspace/gecko/testing/taskcluster/scripts/phone-builder &&
         buildbot_step 'Build' ./build-phone.sh $HOME/workspace
   extra:
     treeherderEnv:
       - production

--- a/testing/taskcluster/tasks/builds/b2g_nexus_5l_user.yml
+++ b/testing/taskcluster/tasks/builds/b2g_nexus_5l_user.yml
@@ -11,16 +11,17 @@ task:
     name: '[TC] B2G Nexus 5-L User'
 
   payload:
     cache:
       build-nexus-5-l-user: /home/worker/object-folder
     env:
       TARGET: 'nexus-5-l'
       DEBUG: 0
+      TOOLTOOL_MANIFEST: 'b2g/config/nexus-5-l/releng-nexus5.tt'
     command:
       - >
         checkout-gecko workspace &&
         cd ./workspace/gecko/testing/taskcluster/scripts/phone-builder &&
         buildbot_step 'Build' ./build-phone.sh $HOME/workspace
   extra:
     treeherderEnv:
       - production

--- a/testing/taskcluster/tasks/builds/b2g_phone_base.yml
+++ b/testing/taskcluster/tasks/builds/b2g_phone_base.yml
@@ -1,15 +1,19 @@
 $inherits:
   from: 'tasks/phone_build.yml'
 task:
+  scopes:
+    - 'docker-worker:cache:tooltool-cache'
   metadata:
     description: |
       Android phones + b2g environment used in full stack testing.
   payload:
+    cache:
+      tooltool-cache: '/home/worker/tooltool-cache'
     env:
       MOZILLA_OFFICIAL: '1'
       ENABLE_DEFAULT_BOOTANIMATION: 'true'
       B2G_UPDATER: '1'
       REPO_TRACE: 1
       VARIANT: user
 
     # Emulators can take a very long time to build!

--- a/testing/taskcluster/tasks/phone_build.yml
+++ b/testing/taskcluster/tasks/phone_build.yml
@@ -49,16 +49,18 @@ task:
 
 
     env:
       # Common environment variables for checking out gecko
       GECKO_BASE_REPOSITORY: '{{base_repository}}'
       GECKO_HEAD_REPOSITORY: '{{head_repository}}'
       GECKO_HEAD_REV: '{{head_rev}}'
       GECKO_HEAD_REF: '{{head_ref}}'
+      TOOLTOOL_REPO: 'https://git.mozilla.org/build/tooltool.git'
+      TOOLTOOL_REV: 'master'
 
   extra:
     build_product: 'b2g'
     index:
       rank: {{pushlog_id}}
     treeherder:
       groupSymbol: tc
       groupName: Submitted by taskcluster