Vivo 1801 Custom Rom =link= -

If Deep Test fails, you must use the EDL (Emergency Download) mode with a patched firehose loader—advanced users only.

Installing a custom ROM voids your warranty, wipes your data, and carries a risk of "bricking" (breaking) your device if done incorrectly. Proceed only if you understand ADB, Fastboot, and recovery flashing. vivo 1801 custom rom