Occasionally, custom ROMs fail to read the device IMEI. Ensure you have backed up your NVRAM/EFS partition in TWRP before starting so you can easily restore your network connectivity.
Place both of these downloaded .zip files onto an external MicroSD card and insert it into your phone. 📲 Step 3: Flash the Firmware via TWRP oppo f1s firmware download 712 work
Open your computer's command prompt in your ADB/Fastboot folder and run: fastboot oem unlock (Follow on-screen prompts to confirm). Occasionally, custom ROMs fail to read the device IMEI
Once both files are successfully flashed, select the Reboot System option. 📲 Step 3: Flash the Firmware via TWRP
I can help guide you through specific recovery steps if you need them. Tell me:
Custom ROMs rarely come with Google services pre-installed. Visit the OpenGApps Project , choose ARM64 (or ARM depending on your specific chip build), select Android 7.1 , and download the Pico or Nano package.