Must Read:This flash file tested by me without any error working well, you can use this flash file when your device hang on logo problem, restarting problem, security lock problem, password lock problem, pattern lock problem etc software related problem and you can use this tutorial without any box and this is free for all who know about software in mobile, impotent for flashing first must check your micro usb cable if not good then you can't flash it so check micro usb cable second check your device battery that is impotent for flashing if your device battery low so stop your device between flash so this is impotent for flash, before you flash save your data like contact, photos, videos etc because this is factory flash file so you can't save after full flash so must remember all are impotent notes.
Download Link
Panasonic T31 Firmware or Flash tool Download
hereRequired for flash:
1. Panasonic T31 with good battery charged
2. Panasonic tested firmware
3. SUGAR MTK_SP Flash tool
4. Micro usb cable
5. Computer or Laptop
Procedure:
1. Download tested firmware or flash tool from above link
2. Extract to desktop or as you like path
3. Open T31 offline sw\Downloader\tool folder and choose SUGAR MTK_SP.exe file and open it
4. Choose Server : France Server and fill up correct User name : SU_IN.Panasonic Password : KoD8naL2
5. Click on OK button (must be internet enable)
6. Choose correct Product Models : Panasonic T31
7. Click on Option menu and choose option
7. Untick on : Update from FOTO option
8. Tick Emergency download mode option and then press OK button
9. Click on Upgrade button
10. Insert battery into device
11. Press and hold Volume Up button and insert usb cable (key must be working good)
12. Wait until driver install, if driver installed in your computer or laptop then downloading automatically
13. Wait until full download firmware (do not unplug when your device downloading)
14. You are done
Panasonic T31 Flash done with flash tool screenshot:
Panasonic T31 Flash done with flash tool video: