Xiaomi Redmi 13C
- Camera: working
- VoLTE: working (needs Phh Treble config)
- Bluetooth: working
- Wi-Fi: working
- SIM/Mobile Data: working
- Fingerprint: working
- NFC: logo shows(untested though)
- MTP: working
- Speaker/Mic: working
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If the screen goes dark during flashing in fastbootd, it's still in fastbootd. It's just turning the screen off to save power. You can wake the screen up by pressing the power button.
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There already are ROMs for the Redmi 13C. Go use them instead.
Step 1: Enter fastbootd: adb reboot fastboot
Step 2/1: Recreate product_a to free system space: fastboot delete-logical-partition product_a
Step 2/2: Recreate product_a to free system space: fastboot create-logical-partition product_a 1000
Step 3: Erase /system: fastboot erase system
Step 4: Flash GSI: fastboot flash system PATH_TO_GSI.img
Step 5: Erase userdata: fastboot -w # If this does not work, factory reset in recovery instead
Step 6: Flash stock boot (optional but recommended): fastboot flash boot PATH_TO_BOOT.img
Step 7: Disable dm-verity: fastboot flash --disable-verity --disable-verification vbmeta PATH_TO_VBMETA.img
Step 8: Reboot by running fastboot reboot
If the phone starts bootlooping, try holding the power up button till you get to recovery and doing a factory reset.