Answer to: Baseband Chip broken, error -1. Need knowledge on replacing chipi had the very same problem. after a water damage my phone was searching for service all the time and could not even tell if there was a sim present or not. restores aborted at firmeware update with error -1. some rare times with error 23. via redsnow i was able to reinstall and activate ios 5.1.1. wifi was working for a few hours - but baseband info was missing and still no service. 6.1.3 update without baseband worked but phone got still no service. since a phone without service was useless to me, i took the fun and disassembled it and heated the logic board alone in an oven at 180 celsius degree for about 20min. after that the restore was flawless and the phone is working! i am not joking! hope that helps.