my situation was,The only way to root new firmware at the moment may be flashing a CWM zip of the latest version, after flashing the rootable FTF with root and recovery installed.
And OTA from a rooted firmware also works.
1. out of the box firmware 244
2. upgraded to 250
3. rooted using root many android
4. download 265 OTA
5. failed to install 265 OTA
6. Flashtool did not recognise my rooted SO-03E
7. failed to flash FTF file because flashtool did not recognise my tablet has turned on USB debugging mode.
8. updated via Sony Mobile Update Service
9. lost my root.
m(。≧Д≦。)m
從我使用 Tapatalk 2 的 SO-03E 發送