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For official and community-supported firmware files, these are the most reliable platforms:
If you are performing a manual update (rather than using the official Rescue tool), follow these general steps:
If the phone hangs on the logo after flashing, try a "Factory Reset" from the recovery menu.
: The best place for custom ROMs (like LineageOS) and "stock-lite" firmware if you are looking to improve performance on older hardware. Firmware Installation Basics
: Ensure your battery is at least 60% to prevent the phone from powering off mid-flash, which can cause a permanent "brick." Troubleshooting Tips