[G1 Android Development] kemimarie:
I found a site with someone who bricked their phone but found a loop hole. I have never bricked my phone and hoping i never will but for those who have bricked their phone here are some steps to try to unbrick it! HOPE IT HELPS! SEND FEED BACK!!

So you can’t access bootloader or recovery and the only thing that works is the blue led trick when pressing trackball + power button??

Try the procedure below.

Step 1: Turned Phone off by taking out the battery.

Step 2: Prepared SD card

Put SD card in card reader and formatted it as FAT32, copied the DREAIMG.nbh onto it.

Or try Sapphimg.nbh

Step 3: Put SD card back in phone

Step 4: Hold Vol down + Power + track ball together and put battery to start phone

Step 5: Run update

IF THAT DIDNT WORK!

TRY THIS!

Step 1: Turning Off Your Phone

Because you have a bricked phone, you can't just hold the power button. So if your phone is not already off then you're going to want to take out the battery.

Step 2: Preparing Our SD card

Take out your SD card and put it into an SD card reader or some type of other adapter so that we can view it from our computer. If you cannot view the SD card on your computer then you're going to need a new SD card.

Download DREAIMG-RC29.zip and unzip the file.

Reformat the SD card to FAT32 and copy the DREAIMG.nbh onto it.

Safely eject the SD card.

Put the SD card into your device.

Step 3: Wipe The Phone

Hold home and press the power button.

When you see the image of an ! mark, open your keyboard and press Alt + L if you cannot see any command options.

Do a factory reset by pressing Alt + W or just using the trackball.

When the reset is done, go ahead and hold the camera button and select the reboot system now option with your trackball.

Step 4: Flashing The Phone

Once the grey screen pops up (or the white screen if your phone was rooted with JesusFreke) it will ask you to hit a button to start installing the image…press that button. DO NOT DO ANYTHING TO STOP THIS PROCCESS. It will take about 8-12 minutes.

When the image has completed the installation (it will say completed), go ahead and press the green, red, and menu buttons at the same time. The phone will reboot.

And your done! Your phone is now unbricked!.

The G1 screen will hang there for a good minute or two, but be paticiant, it will boot. Now you have a choice. Try to hack your phone again, because you're in the correct state to have another go, or, you can stick with the official Android. Now if you choose to stick with the official Android, here's what you do.

Step 1: Upgrading to Android 1.0 RC33

Download the file signed-PLAT-RC33-from-RC30.zip

Rename the file to update.zip and copy it to your SD card

Reboot your phone into recovery mode. Power off the phone first and then hold down the Home key while powering it back on.

The recovery mode is finished loading when you see the ! mark inside the triangle. Press Alt + L to display the list of options.

Press Alt + S to flash the file update.zip.

Wait for the update to apply. Your phone may reboot during this process so be patient.

Press Home + Back if prompted to reboot your phone.

Step 2: Upgrading to Android 1.5 CRB43

Download the file signed-kila-ota-148830.de6a94ca.zip

Repeat the steps from above to flash the update file.

Step 3: Upgrade to Android 1.5 CRC1

Download the file signed-kila-CRC1-from-CRB43-FIX.7ca4a1d7.zip

Repeat the steps from above to flash the update file.

Step 4: Upgrade to Android 1.6 DRC83

Download the file signed-kila-DRC83-from-CRC1.c41b93c1.zip

Repeat the steps from above to flash the update file.

PM FOR THE DIRECT WEBSITES!