Originally Posted by rufy93
Unfortunately I was stupid enough to not do that, so right now I have a backup with an unlock bootloader.
1. Download and install Flashtool
2. Connect phone in Flash-mode (phone shut down, volume down + power)
3. Press the BLU button
4. Press the relock option
5. Put a stock .ftf firmware in the Flashtool firmwares folder
6. Flash the firmware
Let me know if this works.
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