I have HTC(same as G1) running on 1.0 and would like to update to 1.5 but T-mobile will not send me update OTA since i dint buy my phone through Tmobile. i have renamed the downloaded zip file to "update", dropped it into my sd card and proceeded with update. upon reading my sd card, and opening update package, the following are the error messages on my screen E:No signature(413 files).. and E:verification failed, installation aborted..
Can someone help me with this please. I am not a pro, as many of you are and need to be explained as 2 year old.