The most stable methodhelp me please! put the phone into fastboot mode. I unpacked the firmware flash folder. I click on update firmware. writes waiting for devices. firmware is not installed.
1.Reinstall the phone back to Oxygen and update to the latest version of the system
2.Download all the necessary files, after the operation is complete, remember to unlock the phone OEM
3. After the new system has finished brushing, go to the Entry fastboot installation tutorial mentioned in the C62 firmware, you have to wait for him to run it