Xperia Mini St15i rebooting again and again when bluetooth turned on

[gtskaran]

Xperia Mini St15i rebooting again and again after bluetooth is turned on. It is doing so far more than a day. The PC Companian and Flashtools were not able to detect the phone.

It has 4.0.4 update.

How to resolve it?

[_alexdon_]

Only with BT on? 

[gtskaran]

Yes. When the BT is on from widget. The phone is immediately started rebooting and it never ended.

[_alexdon_]

If you take out the SIM,does the phone still restart?

[gtskaran]

Yes. It restarts again. Tried removing the SD card as well. Same result.

Noticed one thing that when the USB connected to Windows 8, it shows unrecognized USB and shows code 43 error. Had reinstalled PC companian and tried uninstalling the driver, but again same issue.

[_alexdon_]

You should stop by a sony service:

http://www.sonymobile.com/global-en/support/contact-us/

[gtskaran]

Finally... Went to the service center and they were able to update/flash the stock ROM and the issue got fixed.

Not sure what tools they were used, the service personnel mentioned there are multiple tools. Their PC is running windows 7.

It is still unclear why the same is not able to do with PC Companian on Windows 8.

[_alexdon_]

Probably a flashtool is what they have used.

[gtskaran · Accepted solution]

It looks like the USB cable came with device not working. The tools were able to detect the device with a new cable. Since the device was already flashed did not applied flash again.

This may help some one.

[_alexdon_]

Great.