Help I need to update my Google Nexus one to 2.2 or 2.3 but with wierd build number

[sheffdwayne]

I just got a Google nexus one second hand with firmware version: 2.1-update 1 and build number assion-userdebug 2.1-update1 EPE55 26105 test-keys.

I've tried to update the firmware to 2.2 or 2.3 manually but none of the packages I've found worked. Installation aborts. I don't know if it's because of this weird build number...Please help me. Thanks.

 

[Deleted User]

I just pulled out my old Nexus One and noticed it's still at 2.1-update and says there's no system update; I want to fully upgrade it and I know it goes to Gingerbread but I have no idea what's going on with it.