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A member over at Android Community has found instructions for updating the G1 from a MicroSD card. These instructions may come in handy for the many G1 users frustrated with the random OTA update distribution. As is the case with the flashing of other gadgets, there is a risk of bricking your phone. Proceed with caution.

• Download the update from google website: https://android.clients.google.com/updates/signed-kila-ota-115247-prereq.TC4-RC19+RC28.zip

• Rename the file you just downloaded to update.zip

• Copy the file update.zip to the root of your micro sd card.

• Now turn off your phone and turn it back on while holding the home key.

• When you see a triangle with a exclamation sign and a phone, slide open your keyboard and press ALT-L to display the menu and then ALT-S to start the update process.

• Wait for the update to finish. If prompted, press Home + Back to restart your phone.

• Wait a little bit more and done!

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