Re-download the firmware. Use XperiFirm to create a fresh FTF, or verify the MD5 checksum.

A progress bar will show. The process takes 3-10 minutes. You will see log entries like:

devices (circa 2013), such as the Xperia Z, ZL, Tablet Z, T, and V. 1. Prerequisites Backup Data:

In the quiet hours of a rainy Tuesday, sat before his aging laptop, the screen’s blue glow reflecting in his tired eyes. On his desk lay a Sony Xperia