Excuse me? Woiding the warranty from flashing? I don't buy that, I need, no, request, the full source from Nokia itself to say this same. Also, how are they going to prove us, that we've flashed the device by ourselfs? Aren't they going to re-flash it anyways so why should it care? There's though the IMEI-code, which lists, as far as I know, all the firmwares and downloads for that IMEI. So yeah, I'm pretty much out of warranty then, eh?

Similar topic:

Nokia's policy on whether changing the N900 firmware violates warranty