Thanks everybody for the suggestions.
The fix that worked for me is as follows:
Download file PRS-T1_SD_UPDATER_1.0.05.11130.exe from
http://rghost.net/41929322
Instructions:
You will need a clean microsd card of at least 1GB.
0. unpack the archive to your microsd (in the root directory of the card should be OS Firmware)
1. press the button on the reader rezet
2. charging charging from the network until the red light goes off
3. insert the card microsd
4. pinch the Home button and Options (middle and right buttons)
5. press the power button without releasing the button held down
5. waiting for the inscription "Opening book" and the moment when the thermometer starts to run, and only then release the button
6. then should be lines on the screen, then the inscription "Updating", then blink again and the inscription "Updating", then reboot norms. mode
7. removing the card microsd
I found this on another forum. It worked for me.