itunes error 9, 21...what are my options?

I am very sorry about the extremely long description but I wanted to give the full story.

About two months ago I happened upon 2 broken iPhone 3G's....one had a cracked screen and broken LCD and the other kept giving error 23 when restoring so was completely useless. See this thread on hackint0sh (http://www.hackint0sh.org/f148/150803.ht...)

I took the display assembly out of the iphone with the restoring issue and installed it in the other iPhone. Everything seemed to work perfectly. However after a few days it spontaneously entered a reboot loop...often just ending up on a whit screen. When I repeatedly rebooted it, it eventually booted up normally. So I restored a few more times (it gave me many errors but I persisted (21 was common I think)) and eventually these issues stopped...until about two weeks ago.

Every once in a while it decided to go on a reboot loop but until today I had no problem just holding home and sleep a few times to eventually get it back to normal.

Today it entered a very familiar reboot loop and I just cant get it out. Errors 9 and 21 are very common when restoring. There are few others which I will edit this with. I have tried dfu and regular restore mode countless times.

So basically I have still got the carcass of the other broken iphone mentioned above.

Is there any way I could use the parts which are still useful to bring this phone back to life.

Again sorry for the extreme length of the question. I would really sincerely appreciate any help.

Thanks in advance,

James

edit: I can post itunes restore logs if that would help

edit 2: here is a restore log which returns error 9:

http://pastebin.com/GLZGTvsU

here is a different error 9 :

http://pastebin.com/nfbJiTDp

here is an error 21:

http://pastebin.com/GLzSGp3p

here is an error 1604:

http://pastebin.com/Q5UPbQ4a

here is an error 1603:

http://pastebin.com/n4nEGc7W

here is error 14:

http://pastebin.com/VGbSsDJx

I have 25 restore logs from the past two days and many are different..I'll just post a few.