12.2 is definitely not for the Stilo Connect NAV+.
I have a defective unit (had some problems after a longer period of usage, but always booted correctly) and tried to flash it with 12.2. But during the trial of flashing appeared only the mismatched screen of post #35 (right bottom).
Afterwards I replaced the FLASHER.OUT file of 12.2 with the FLASHER.OUT from 9.9 and burned a CD.
It looked like that the flashing progressed correctly and finally appeared the "flashing OK" message.
BUT afterwards the Connect did not boot, only an incorrect screen appeared (similar to the screen of the post #35 - right bottom).
After this I could reflash it with 9.9 and seemed to work again.
I prepared another hibrid flashing disk where I copied the VXROM.OUT, VXWORKS and CRC_K and FLASHER.OUT of 9.9, the other files were from 12.2.
Again the flashing seemed to progress correctly and finally showed the "flashing OK" message.
The Connect started to boot correctly, appeared the logo with 9.9 but nothing else.
I could switch it on and off with the power button and ignition key. But after a few attempts it freezed totally no more reaction on the power button and ignition key.
So it has finished its life.
Now I searched in the users manuals and found that the screen of Stilo is different from the other units:
Stilo 7" 480 x 234 (strange is the vertical resolution, seems to be incorrect - the Stilo screen is vertically and horizontally larger than the others -, but this resulotion is stated everywhere)
Bravo 6,5" 400 x 240
Croma 6,5" 400 x 240
159 6,5" 400 x 240
147 5" 320 x 234
This different resolution is the reason of the incorrect images. And probably the flash eproms are also incompatible.
So if you want to save your Connect, don't try with 12.2.