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It is crucial to use a firmware that matches your exact model (G8141 single SIM) to avoid hard-bricking.
This is the only 100% verified method because the files are pulled directly from Sony’s update servers.
Flashing a stock FTF does not relock the bootloader. To relock, you need to use Fastboot commands ( fastboot oem lock ) and then flash stock.
It is crucial to use a firmware that matches your exact model (G8141 single SIM) to avoid hard-bricking.
This is the only 100% verified method because the files are pulled directly from Sony’s update servers.
Flashing a stock FTF does not relock the bootloader. To relock, you need to use Fastboot commands ( fastboot oem lock ) and then flash stock.