[Touch GSM ROM Development] pof:
This is a patched SPL for HTC Elf devices (HTC Touch / HTC P3450 / Dopod S1, o2 Nova, etc...).

This SPL is based on original Elf 1.11 SPL but includes 3 patches:

g_cKeyCardSecurityLevel = 0 (set 32)

Does not check Model ID

Does not check signature*

(*) code must be formally signed i.e. contain properly-formated signatures on their places, however no checking are performed against them.

This means you can flash ANY ROM to your Elf after flashing USPL on it, no need to pay for CID unlock anymore!

Disclaimer:

This is free to use but at your own risk, I take no responsibility for any conflict, fault, or damage caused to your phone by this unlocking procedure. No warranties of any kind are given. Any commercial usage prohibited.

Instructions:

1. Unzip

2. Connect your phone to computer, make sure activesync is enabled (green icon)

3. Run elf-uspl.exe on your computer and follow instructions on screen:

*************************************************************

Please make sure Activesync is enabled (green icon in systray)
and hit ENTER to start...

STEP 1/3......50%......75%....100%

The next step will load a patched bootloader (SPL) on your device
it will make your device temporary SuperCID (seclevel=0), and will
avoid modelID and signature checking when flashing NBH files.

Hit ENTER to continue...

STEP 2/3.....15%.....25%...50%...75%.....100%

Phone screen should now be blank and the activesync icon gray
if not, the loading procedure has failed and you'll have to repeat again.

If all was OK hit ENTER and the standard "PDA Phone ROM Update Utility"
window will start, allowing you to flash patched SPL on your device.

Hit CTRL+C to Cancel or ENTER to continue...

Follow the steps on the wizard to flash the patched SPL, when this
step completes your device will reboot.

STEP 3/3 - Launching RUU, please wait...

Process is finished, congratulations!
If you find it useful don't forget to donate :)
*************************************************************
(c)2007 pof - XDA Developers

Hit ENTER to quit.

Update:

Some ROMs (specially O2 Nova) don't allow to run unsigned applications by default and some people have reported difficulties installing USPL. If you see a popup asking to run unsigned code, you need to rapi-unlock your phone manually, to do this download enable-rapi.zip and follow the instructions inside the file prior to installing USPL.

Notes:

1. I have only tested under XP, people says it works on Vista too.

2. Unzip the file, do not run it on the zipped folder. (Note: Better to unzip in c:\ folder with no spaces on the name).

3. This will only CID unlock your device, not SIM unlock.

4. On some devices STEP 2 fails the first time, just hit CTRL+C, softreset your device and start over again.

5. To create NBH files for Elf you should use HTC Rom Tool by Dark Simpson, because "nbhgen" doesn't create proper NBH files for elf.

6. You can use Artemis splash screen tool by jcaron safely on the Elf, the Artemis RUU is compatible with Elf-USPL and both devices have same splash screen format.

7. After flashing a full ROM (containing a SPL on it) you'll overwrite USPL, so you'll need to repeat the USPL flashing process again.

8. If you like it, use the paypal donate button on my signature :)

Enjoy! ;)

UPDATE (thanks Noonski)

TO AVOID BRICKED ELF BE SURE TO CHECK THIS THREAD:

http://xdaforums.com/showthread.php?t=320155

So new users can first check if their Shipped rom is around before taking the decision to flash USPL.

Also this makes them aware to submit new ones to the list.

And if they Get stuck with a 270 Error at 3% without actually having an original, it was they that made the decision themselves.