as long as you back up your channellist just in case something goes wrong your in the clear it should just be a matter of transferring the patch data to your tm in the usb>data transfer menu but as with all 3th party firmware there is no garantees but your on a patch already so you have done it before and this patch should be no different i've seen on the forums that the latest patches open a good bit more on 19.2E on the older models like yours so let us know what's open on your model after the patch upgrade and it might also fix your rebooting problem.