Jam (half)dead after upgrade

[iCue]

I have a problem with my Jam
During the upgrade ( I messed sth up :/ ) the software quitted and the mdac went off. Restarting leads to nothing. After Cold reset,
the device is stuck in bootloader and doesnt do anything at all
only way to kind of restart it is to connect it via usb, remove the powerpack, ( red light glooming ), reinserting the power pack -> Device is Restarting last rom.

After the autoconfig ( T-Mobile ) device restarts ( as usual ) but again stucks in the BL

From time to time it communicates via USB in BL(after several restarts), but not enough to do a d2s.

How to handle it?!

[bolasz]

When in BL disable usb connection in AS, connect it to PC and try to reflash.

[JayEs]

we already did so,
but the problem is that there is no rom for our mdac outside....
(usb is deactivated in as)

[bolasz]

I guess you'll have to use another rom (imate, qtek).

[JayEs]

we tried this way, we used this rom: JAM_WWE_106_110_10500
with this patched application: MaUpgradeUt_noID...

Our bootloader is not able to reinstall its own backup from
a sd card...

[bolasz]

I don't know what to suggest...
Sorry, mate...