[Sony Xperia P, U, Sola, Go] jay_smith:
Hi guys,

Noob here.

Unlocked the bootloader on my XS and used fastboot to upload "central europe" routed version 6.0.A.3.73.

Everything worked fine doing this.

Followed blagus' / doomlord's tutorial to relock bootloader - (writes unlock-bit false). Used doomlord's ftf with his .sin crafted for XS.

Flashtool installed okay with flash and XS drivers. Sometimes flashing fails but if I run the flashtool first and connect my XS with the vol down button pressed, its LED lights up green and flashool logs "device connected in flash mode."

Go straight to flash button and point tool at the firmswares dir where I put DL's relock FTF. Just click the "OK" button and don't select "ignore TA" or "skip verify". Progress bar runs to 100% and flashtool log shows it has written a string of bytes successfully (no red-ink reported errors) - says phone will reboot. Nothing much happens on phone but flashtool reports "device connected in flash mode" again afterwards as if it did go offline momentarily and come back.

Using online SEUS via sonymobile.com/global_en or /gb (UK) shows ICS available for my phone. Downloads to phone successfully and says installation will carry on on the phone. Phone reboots to cardboard box logo and progress bar with 4 dots. First dot lights up and progress bar runs to 100%. Second dot lights up but progress bar fails to move. Screen blanks and phone boots to old rooted central-european firmware, eventually reporing "could not install updated."

The behaviour of the phone on official SEUS update has changed significantly. Before DL's relock was applied, update would fail without screen showing the 4 dots or a progress bar on reboot - just a brief picture of the "cardboard box" and it would switch to booting the old firmware. Now i appears to be installing at least some percentage of the update before failing. Leads me to believe DL's relock has been applied successfully even if it hasn't solved everything.

Sony on-air service suffers roughly the same progblem. It tries to push 6.0.A.73 to the phone, i.e. a pre-ICS update. Odd it's the same version as the rooted firmware I installed but there you go. I download it and select install. Phone reboots and picture of box with four dots appears. First dot runs to 100% on progress bar. Second dot illuminates but the progress bar doesn't move. After a few seconds, phone boots to old rooted firmware. Have tried to download update again and again via update centre on phone but each time the installation fails. Behaviour is very different to before I installed DL's relock though - same as above - it wouldn't even show the four dots or a progress bar on the boot screen with the cardboard box - just switch straight back to booting old firmware.

Have tried flashing DL's relock a few times. It doesn't always succeed but I always leave it after I've seen flashtool report a successful write. No change to above though.

Questions?

Why does SEUS / on air update fail part way through installation if they both seem to start correctly?

Is it because I'm trying to update from rooted firmware?

Is it because I have a central european image loaded and I'm trying to update in the UK?

Possible solution? Anyone?

All help very greatly appreciated. :crying: