How to upgrade from an SD card

[mav]

Hi, I got one big problem while I was upgrading my Qtek 2020 from ROM 1.58fr to the Launch ROM fom O2. During the pocess I guess that I lost the connection and the upgrade failed.

I tried to launch it about 10 times without any results. When I switch on my Qtek I just see a grey screen showing me the version of the ROM I tried to install 1.03.

Now, as I cannot do that from my PC I would like to try from a SD card with the XDAtool. However, where do I find a ROM I can use to install my XDA with this tool and how do I boot from my SD card ?

Thanks for your help, I'm a bit disapointed for the moment. :(

Mav

[pneuma]

Information on the SD Card upgrades can be found on another forum topic, here (http://forum.xda-developers.com/viewtopic.php?t=8606), obviously I don't need to tell you to be cautios when doing this.
As for finding a ROM, you can either use the one from a rom-kitchen, like lumpensteins rom-kitchen (http://lumpistefan.dyndns.org/), or register and download one from your service provider and start installing it, but remove the files from the temp directory and put those on an SD card. There are plenty topics in these forums with more detailed instructions, so I suggest you search more.