I follow the tutorial step by step , but after 10 minute I have BROMERROR in SP Flash All is fine, include VCOM drivers. Maybe this error is possible to appear because the phone is encrypted(Android system)? Or before start flashing is good to make a factory reset?
For normal you need no factory reset before flashing and also encrypted phones was no problem in my test. Was this your error message?
Message: BROM ERROR S_DL_GET_DRAM_SETTINGS_FAIL (5054)
Meaning: The files you're trying to flash do not belong to or are not compatible with the phone you're trying to flash them to
Solution: Ensure you're using the correct files. If you're sure they are, then try formatting before flashing again. (By Formating you may loose your IMEI. It can be complicated to restore it by SN write tool.)