--- a/mozilla/project_branches.py
+++ b/mozilla/project_branches.py
@@ -120,17 +120,17 @@ PROJECT_BRANCHES = {
     },
     # Disabled by Bug 1135702
     # 'fig': {},
     # Disabled by Bug 1206269
     # 'gum': {},
     # disabled in bug 1215527
     # 'holly': {},
     'jamun': {
-        'gecko_version': 53,
+        'gecko_version': 47,
         'watch_all_branches': True,
         'desktop_mozharness_builds_enabled': True,
         'use_mozharness_repo_cache': False,
         'branch_projects': [],
         ## TODO - enabled tests.
         # note - to enable tests you must also remove:
         # platforms[platform]["slave_platforms"] item override below
         'enable_opt_unittests': False,
@@ -173,18 +173,16 @@ PROJECT_BRANCHES = {
                 "slave_platforms": [],
             },
             'win32-debug': {
                 "slave_platforms": [],
             },
             'win64-debug': {
                 "slave_platforms": [],
             },
-            'android-api-15': {},
-            'android-x86': {},
         },
         'pgo_strategy': 'per-checkin',
         'enable_release_promotion': True,
         'build_tools_repo_path': 'users/raliiev_mozilla.com/tools',
         "release_platforms": ("linux", "linux64", "win32", "win64", "macosx64"),
         "l10n_release_platforms": ("linux", "linux64", "win32", "win64", "macosx64"),
         "single_locale_branch_config": "dev-mozilla-release",
         'release_channel_mappings': [