once u corrupt a profile, you have to recover it from live. Please tell me you had xbox connect to internet with account at some point. Even silver accounts can get recovered as long as you logged in to xbox live with it at some point. Even if you never bought gold.
I'll give it a try anyway incase. wish me luck.
Did you try to add games you never played to your gamerscore? From the looks of it you did. Don't ever do that. Plus you can only add one copy of the same profile back to your storage device. If you ever go on live, even with silver the profile will get updated to xblive. Meaning you can't added the older version back later, or you'll get either a gamerscore reset, profile ban or worse console ban.
Anyways I'm going to open a a mediafile account, just so i can give you back your profile. They should work now. W/o the DAT from your usb I have no way to test it. Everyone's DATs folders are labeled in the inside differently. Add it back the sameway you extracted it, except hit inject. BTW u had to delete the original from the DATs for the new one to get added anyways or it would'nt of worked.
I spent the whole day getting mine to work, yesterday. Spent hours reading for 3 days to get the right stuff. If you want i can load the verison of the AIO tools i used. If u use modio remember not to update or sign it. it's a cracked verison.