DESCRIPTION

ROM Phone ZTE Optus X Vista Z6621O – ROM Android 9.0

ONLY SC9869a

ROM Official ZTE Optus X Vista Z6621O Version: Z6621O_M02 – OPT_AU_Z6621OV1.0.0B19 – s9863a1h10_Natv-user 9 PPR1.180610.011

Gapps include – No Rooted

Language support: Multilang

Install ROM:

FactoryDownload/UpgradeDownload/ResearchDownload

1 Unpack ROM and extract xxxxxxxxxxxxxxxxxxxxxxxxxxx.pac
2 Run UpgradeDownload or FactoryDownload or ResearchDownload, connect your android device to the computer
3 Click on "Load packet" and add the .pac
4 Click on "Start"
5 During the flashing your mobile will restart automatically
6 Finish

※Please make a backup of your device before installing or updating ROM