..Welcome to FIRMWARE mobile..
Sony XPERIA 1 – Android 10 – 55.1.A.12.28
Published: Wednesday, 06 January 2021 12:53
How to install firmware for Sony XPERIA 1
a1) download and unpack Android 9 Pie (55.0..6.56) for Sony Xperia 1
a2) download and unpack Android 10 (55.1.A.12.28) for Sony Xperia 1
Warning – if you want to make clean installation, you dont need to make any changes. If you want to make only update (without factory reset), you need to remove userdata file from unpacked folder before you continue.
b) turn off your phone and connect phone to PC with holding volume down button
c) start NewFlasher from unpacked folder
d) every time NewFlasher ask you, hit N
e) after few minutes all is done and your phone gets new firmware