hello, i hope im not too late for posting this. i found this link, i was able to go through and complete the steps successfully. How To: Root Your Android Phone (SuperOneClick Method) | TheUnlockr i was wondering if anybody knows by rooting in OS 1.5 or 1.6 or 2.2.1 (which i did for 2.2.1) will it effect performance in anyway or the apps being downloaded? my dilemma is after installing, and reading the SUPERCSDI was so good, i didnt know if flashing rom would work in 2.2.1, i tried and failed. it only showed the htc green screen over and over... stupid thing is i didnt backup. well i fix that now, back on the G1 homescreen on mytouch 3g. now im afraid of installing anything or rooting until i know for sure this can be done w/o conflicts. so 1.5 root or 2.2.1 root? does this make any difference at all in layout/preferences/performance and compatibility? also what roms will WORK 100%? does i have to look at some radio # or model number and to match up with the ROM requirements? if so please point me in the right direction...i hate the sluggishness of 2.2.1 but like a lot of the apps offered that arent for 1.5 or 1.6... thanks, please get back with me on this asap!