Vivo X21a Factory reset done by MRT-Dongle !

>>>Try connect to mobile...Success
>>>init mobile...Success
>>>Downloading boot...Success
>>>ХэФЪЗР»»µЅ¶БРґДЈКЅSuccess
Flasy type: UFS
CPU АаРН: MSM8996
>>>>read mobile GPT data...Success
ХэФЪЗеіэКЦ»ъЛшКэѕЭ...
ЗеіэНкіЙєу»бµјЦВКЦ»ъµДУГ»§КэѕЭ¶ЄК§...
ёсКЅ»ЇµШЦ·:ADD:0x0190800000 Size:0x0CFEFFBE00>>>all is done
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Please disconnect mobile set,and hold vol up and power key
Mobile will be into recovery
Click Restart
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if mobile hand on logo or auto restart...
You can in recovery erase data
After ease data in recovery mobile will working normal

MRT-Dongle number one the World!!!

Good job !!!