I just bought a used Hero and so far it works OK except for two things. First the GPS isn't picking up any satellites from what I can tell. I'll try again tomorrow but it might just be that I'm being impatient and there are too many trees/buildings around. I'm really just mentioning it in case it's relevant to the other issue... The second problem is more disturbing. After powering on the phone I get this message: "Install system software update Would you like to install the following system software update? System update available (size: 3.02 MB) ... etc..." If I hit "Cancel" everything still works as normal. But if I hit "Install now" I get to this screen: "Android system recovery - USB-MS toggle - Backup/Restore - Flash zip from sdcard - Wipe - Partition sdcard - Other - Power off Build: RA-hero-v1.6.2a Finding update package... Opening update package... Verifying update package... E:No signature (216 files) E:Verification failed Installation aborted." Here's some info from the phone ... not sure if it helps: Firmware version: 1.5 Baseband version: 63.18.55.06SU_6.35.17.03 Kernel version: 2.6.27-430d1aea Build number: 2.73.405.66 CL#83173 release-keys Software version: 1.0.0.A6288 Any idea where I can start to fix this? I've only had the phone for a day so I'm not worried if I have to wipe everything to start over. Thanks!