I would really like to regain root acces while avoiding to do a factory data reset. I seem to have (partially?) lost root access sometime shortly before receiving the OTA update to ICS. When I try the traditional one0click rooting process (which I did when it still had GB), it all seems to start off kinda normally, but then gives me some error codes where busybox and su apk are mentioned. Then, after rebooting the phone once or twice, the black screen closes and my phone remains just the same: unrooted and with the su app still in there, not granting any permissions to anyone.
Any help is very much appreciated.