For older devices where OTA is no longer an option, manual flashing is often required: [GUIDE] Manually Flashing Official 4.1 Jelly Bean

If your device still supports official updates, these are the safest options:

You'll also need a few tools, namely ClockworkMod recovery, the fastboot files you used to unlock your bootloader. Grab them here: Android Central Forum

Android 4 1 Skachat Proshivku | Edge |

For older devices where OTA is no longer an option, manual flashing is often required: [GUIDE] Manually Flashing Official 4.1 Jelly Bean

If your device still supports official updates, these are the safest options: android 4 1 skachat proshivku

You'll also need a few tools, namely ClockworkMod recovery, the fastboot files you used to unlock your bootloader. Grab them here: Android Central Forum For older devices where OTA is no longer