Here it is guys, how to back up your HA & AAA shared secret keys in case you break your evdo through flashing roms or *228 or something similar.
Requirements:
QPST 2.7 Build 301
QXDM 3.11.36
Put your phone in DMR mode.
##3424 (send) if you use a Verizon ROM
##3424# for Sprint
I am not sure which is used by Alltel, Telus, etc. Please post if you know and I will update this post.
Run the QPST config and plug in your phone, make sure your phone is detected in the COM port list. If not click Add New Port and add the one that it has detected your phone on. What it says may vary but USB will often be in the description.
Run QXDM click Options -> Communications and set the Target Port for the same one QPST config listed for your phone.
In the command box at the top type "spc 000000"
Note: If your SPC is not 000000 then you need to use the correct number instead!
If successful you will see a window titled "Command Output" that will output some text with the final line reading "SPC Result = Correct"
Next in the command box type "requestnvitemread ds_mip_ss_user_prof"
This will get you a lot of stuff in the Command Output window. It will start with the "DIAG TX item" section, ignore this one, we are interested in the "DIAG RX item" part.
The actual keys are 16 lines and marked in the output as 0-15. You will notice that quite handily both HA and AAA are both there. Take the part after the "0x" and that is actual key data. Just write down (or use word, notepad, whatever) to record this for safe keeping.
If you are doing this right then you have a long string of 30 characters all strung together for each key. DOUBLE CHECK YOUR COPYING! A single mistake will cause this to fail.
Putting the keys back into the phone:
Load QPST service programming, go to the M.IP tab. Double click profile 0 (in the white box) and use "Enter hex value" to enter your backups of your HA and AAA keys.
Write to phone.
Soft reset. (may not be required but I do it for good measure)
Enjoy data again without another call to support for a DMU reset or multiple ESN changes.
Please leave feedback to let me know about your experience and any issues you may have!
Good QXDM information is pretty rare so please contribute if you have anything to add!
Thanks to aarondeep from the original thread
http://forum.ppcgeeks.com/showthread.php?t=52727 for pointing me in the right direction.