May 252010
 

My system: Windows x64, Nexus One, Android version 2.1 update1, Build number ERE27 Download the Android 2.2 firmware from here. Rename the ‘signed-passion-FRF50-from-ERE27.1e519a24.zip‘ file to ‘update.zip‘ and copy it to SD card. Power down Nexus One. Hold down the ‘Volume Down’ button and press the ‘Power’ button. In the list, press the ‘Volume Down’ button, [Read More >>]