If your T68 experiencing some troubles and you want to recover it do following:
Warnings.
Be aware - after recovery your device will be like a new born baby. All your installations will be gone! If you apply this tool to a Lynx, it will be changed to a T68 UHDML (without Polish bookshop, Polish dictionaries, Ivona TTS etc... ). Also warranty of Artatech (Lynx devices only) could be affected. However, it is possible to recover back to Lynx edition using that tool (you need to get update.zip from Artatech first and replace it in this package).
* download program package from
here
* decompress zip package
* connect device with pc
* shutdown device
* run mfgtool2
* press both pageup/pagedown and power button to boot device
Your device boots in "download" mode. The screen will not change but your PC will signal a new USB device and in mfgtool2 window appears "HID device.
* click start to program the device
If you see a windows message like this: (you need to format drive X ...) - just ignore it and wait for the tool finishes flashing.
* once finished, click stop and exit
* long press power button to shutdown device
* press power button again to boot device
that's it