[HTC Inspire 4G] shad0wf0x:
There seems to be an awful lot of confusion about radios on the Inspire 4G. Most of the threads out there insist that you need ENG S-OFF to flash a radio. However to root our phones we had to flash a radio without having ENG S-OFF. I am attaching 3 radios known to work on the Inspire, I have prepared them to be flashed without ENG S-OFF and will explain how to make your own in the future. The official radio thread for all our phones(Inspire and Desire HD) is located here:

http://xdaforums.com/showpost.php?p=9891546&postcount=1

More information on Radio S-OFF and ENG S-OFF can be found here:

HTC Vision Wiki

Using ENG S-OFF and fastboot to load radio images is more risky than loading the file on the sdcard and then checking the md5sum of the file because you have verified that the copy to the sdcard was completed correctly, rather than having no check with fastboot loading the file directly.

Quote from HTC Vision Wiki regarding ENG S-OFF:

This is totally optional and dangerous - if the write to the phone partition fails the phone will be bricked. At the moment there is no cure for a phone that has been bricked by a failed hboot install.

***DISCLAIMER***

YOUR WARRANTY IS NOW VOID! I AM NOT RESPONSIBLE IF THIS PROCESS BRICKS YOUR PHONE, CAUSES YOUR GIRLFRIEND/WIFE TO LEAVE YOU, SUMMONS DEMONS, SOILS YOUR IMMORTAL SOUL, ENDS THE WORLD. USE AT YOUR OWN RISK.

***/DISCLAIMER***

Make sure to check that there is no corruption in the process of getting the files and putting them on your sdcard. The best way to check this is to download the file, put it on your phone as PD98IMG.zip and from a command line/terminal, using adb, do:

adb shell md5sum /sdcard/PD98IMG.zip

*BE VERY CAREFUL WITH THIS PROCESS YOU CAN BRICK YOUR PHONE WITH A CORRUPT RADIO.IMG*

To flash a radio using hboot with radio S-OFF you can simply take the zip file PD98IMG.zip from the hack kit (IN THE RADIO FOLDER) (Thanks ATTN1) and remove the radio.img file from it using winrar or 7zip, and put a new radio.img from elsewhere in the zip named radio.img and using store (NO) compression or Normal compression. Make sure it is named exactly PD98IMG.zip and put it on the root of your sdcard. Reboot your phone into hboot and the new radio will prompt you to load. Press volume up on the phone and it will load automatically and ask you to press power to reboot.

Once you boot up normal you should see the new radio under baseband version in settings/about phone.

If you do not want the radio to flash every time you go into HBOOT you must remove or rename the file at the root of your card to something other than PD98IMG.zip

If you are creating your own PD98IMG.zip files make sure that the radio.img matches the md5sum of the original before placing it in the zip. Here is the md5sum of the 3 radios included in this post:

att - 12.39.60.19_26.06.04.06_M: 99f4994c7b8b193336cad0dc5ffd19b4 radio.img

telus - 12.35d.60.10f_26.06.03.24_M2: edc9b36f3e30b8a3aec0f8e5ebfe9484 radio.img

gb - 12.35d.60.140fU_26.08.03.07_M: b19c70e7d346c9f76ac31e1964fa4238 radio.img

Ace gb s - 12.41.60.19_26.06.04.14_M: 71ba0afe14b1caf5ba29da6f3e2ab755 radio.img

PD98IMG-att-12.39.60.19_26.06.04.06_M.zip

MD5 Checksum: dea534848a9b71fc54878c0111ceed76

PD98IMG-gb-12.35d.60.140fU_26.08.03.07_M.zip

MD5 Checksum: 2cf70fce7c649822bc67a719b0a68d46

PD98IMG-telus-Radio_12.35d.60.10f_26.06.03.24_M2.zip

MD5 Checksum: 64bb83fda93052fcc8c1423b7a433e77

PD98IMG-12.41.60.19_26.06.04.14_M.zip

MD5 Checksum: 9287AB3CE1E84CDCFF634755EA78D1B1

Thanks to clickclickpc for 12.41.60.19_26.06.04.14_M