First you need the latest Radio and SPL, Follow this
To install:
Things you need:
New SPL -
Download
New Radio -
Download
Your Current ROM -
CyanogenMod 3.6
SD Card Reader
Rooted G1 Phone
Computer
USB Cable
Patience
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Install Radio FIRST
Download the Radio Update
Rename it to update.zip
Remove your SD Card from your phone and place it in your SD Card Reader
Put the update.zip at the root of your SDcard (root = not in any folder)
Insert your sdcard back into the phone
Turn off your phone (Hold power and press Power Off)
Hold the Home button and then press the power button (Keep holding power)
You will now enter recovery
Open up your keyboard and press Alt-S
Let it finish the update
When done reboot by pressing Home and Back
You should be able to access your Home screen (If its stuck on the Google G1 screen dont panic, just remove your battery for now)
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Installing the new SPL
Note: To update you must have a PVT board. To Check go into fastboot (Power and Camera and check) Thanks
persiansown
Take your SD Card out again and plug it into the pc
Remove the update.zip that you put in there
Download your current Rom or any other ROM that you want. I suggest CyanogenMod 3.6
Download the SPL Update
Rename the SPL Update to update.zip
Remove your SD Card from your phone and place it in your SD Card Reader
Put the update.zip at the root of your SDcard (root = not in any folder)
Insert your sdcard back into the phone
Turn off your phone (Hold power and press Power Off) or put your battery back in and turn it on
Hold the Home button and then press the power button (Keep holding power)
You will now enter recovery
Open up your keyboard and press Alt-S
Let it finish the update
Now it will reboot on its own back to recovery
Reboot again by pressing Home + Back
Your phone will be stuck on the T-Mobile G1 Screen (Again DONT FREAK)
Remove the battery from your phone
Remove your SD Card and plug it back into your computer
Take the ROM that you downloaded and rename it update.zip
Remove the update.zip that was on your SD Card and put this new one it
Put the battery back into your phone
Enter recovery (Home + Power)
Press Alt+s to update
Let it finish
Press Home + Back to reboot
Thats it! You now have your new SPL and Radio
Then you need to partition your SD CARD, follow this guide here
http://forum.xda-developers.com/show...9&postcount=52
Make sure you have root before doing all of this. When you are done with both these things, you can install hero. Just download a hero rom, rename to update.zip and wipe and flash. It has auto apps2sd so as long as you have your sd card partitioned you are set.
For more questions please go here
http://forum.xda-developers.com/show...34#post4095134