i have just successfully upgraded my firmware to 210.xx.006 on my E71 and after i restarted my phone, i couldn't see my IMEI screen (*#06#) nor my firmware version screen (*#0000#). It just went back to the main menu, but if i press something on the keyboard, it flicks and it come back to the main menu again (it's like the screen are being shown, but invisible).
Any ideas on how to solve this??