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How to backup the firmware of my huawei phone?

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KamiOh

Member
Apr 13, 2011
45
6
i have a huawei p20 lite ANE-LX3
photo_2021-09-27_16-35-48.jpg
My idea is to have a current backup of my firmware and then try other roms.
This is because the original firmware is:
9.1.0.142 (C605E3R1P3T8) and is updated through OTA 9.1.0.355 (C605E3R1P3)
This way I avoid making several updates
9.1.0.142 >> 9.1.0.200 >> 9.1.0.3?? >> 9.1.0.355

I hope you understand me, I am using a translator. o_O