After flashing, boot into Recovery Mode (Power + Volume Up) and perform a "Wipe Data/Factory Reset" and "Wipe Cache Partition." FRP Lock (Google Lock)
Best for: Advanced users who want to keep data. stk-l22 firmware c636
Sometimes, incremental OTA updates fail with error codes like "Installation failed" or "Data partition corrupt." Flashing the wipes the slate clean, restoring the original vendor image. After flashing, boot into Recovery Mode (Power +