: It requires disassembling the phone to short a "testpoint" on the motherboard while connecting it to a PC : While highly effective for Kirin 659/960, support for the Kirin 710/710F (found in the Y9 Prime 2019

: Some websites offer codes based on your device's IMEI and Serial Number. Exercise caution, as many such sites are unverified or non-functional. 2. Hardware "Test Point" Methods

(bootloader) unlocked