Upgrading the Google Nexus One Eclair 2.1 to Froyo 2.2 – unrooted stock

First check the build number (Settings \ About Phone)  and check the build number out which needs to be ETE27.

  1. Download the 44.4mb update file from Google
    (filename: signed-passion-FRF50-from-ERE27.1e519a24.zip)
  2. Rename the file to update.zip
  3. Copy to the root of the SD card as shown
    matthewmcdonald_com_google_nexus_one_android_froyo_2_2
  4. Turn the Nexus One off
    matthewmcdonald_com_google_nexus_one_android_froyo_2_2_power_off
  5. Hold down the trackball button and turn on the Nexus One
    matthewmcdonald_com_google_nexus_one_android_froyo_2_2_001_start_recovery
  6. Scroll down using the “volume down” button to the recovery option and press the “power” button to select.
    matthewmcdonald_com_google_nexus_one_android_froyo_2_2_002_start_recovery matthewmcdonald_com_google_nexus_one_android_froyo_2_2_003_start_recovery
  7. The phone will reboot and allow you to select the firmware to upgrade.
    matthewmcdonald_com_google_nexus_one_android_froyo_2_2_004_start_recovery matthewmcdonald_com_google_nexus_one_android_froyo_2_2_005_start_recovery
  8. Scroll down using the trackball and press it to select.
    matthewmcdonald_com_google_nexus_one_android_froyo_2_2_006_flash_firmware
    matthewmcdonald_com_google_nexus_one_android_froyo_2_2_007_flash_firmware
    matthewmcdonald_com_google_nexus_one_android_froyo_2_2_008_flash_firmware
  9. The firmware upgrade will begin immediately, allow 5 minutes for the flashing stage.
    matthewmcdonald_com_google_nexus_one_android_froyo_2_2_009_flash_firmware
    matthewmcdonald_com_google_nexus_one_android_froyo_2_2_010_flash_firmware
  10. After the firmware is flashed the Nexus One will reboot.
    matthewmcdonald_com_google_nexus_one_android_froyo_2_2_011_flash_firmware
    matthewmcdonald_com_google_nexus_one_android_froyo_2_2_012_flash_firmware
    matthewmcdonald_com_google_nexus_one_android_froyo_2_2_013_flash_firmware
  11. Startup shows the upgrade was successful.
    matthewmcdonald_com_google_nexus_one_android_froyo_2_2_014_flash_firmware
Automatic Updating of Applications
Automatic Updating of Applications
New Car Screens
New Car Screens
New Car Screens
New Car Screens
Tethering and Portable Hotspot
Tethering and Portable Hotspot

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