Hy im new here and kind of french guy so please excuse me for my bad english.

I have a v1.1 xbox with a Xecuter 2.0 Lite for several years w/o any problems.
A friend came to me to modify his xbox v1.3 with an Xecuter 2.3b Lite.

everything went fine with soldering and then
we had a bad flash with the bios 4983 on his chip,
so we decided to hotswap between my xecuter 2.0 and his 2.3B on his xbox.

and then became problems...

first we put my modchip to boot on his xbox
but his v1.3 with my xecuter 2.0 didnt start (GREEN-BLACK 3 times, then FRAG).
so we put back my xecuter on my xbox and she do the same FRAG !

now i have a v1.1 xbox that refuse to start even without modchip on it !!!

i tried to resolder my LPC
i tried with a good xecuter 2.3B with many bios (4979->4983)
i tried without any modchip (expecting to see a M$ bug-screen cause i renamed my M$dash for evox)

but all this make the same
the LED always do GREEN-BLACK-GREEN-BLACK-GREEN-BLACK then FRedAGreen

since this time my friend's xbox work fine with a new bios 4983 flashed on his xecuter 2.3B

but i hope that my v1.1 box isnt good for garbage...

so is there anyone that experiment this ?
pleeaaase save my life (at least the life of my v1.1)....

Does anyone know how I can fix this ?

Thanx for giving any idea I can try ... and for all the work you do here !

i forgot to say that just after trying my 2.0lite on his xbox
i also tried to put his 2.3Blite (with bad flash) on my xbox
it was past midnight, after the stress of the frag !
i cant even remember why i do that...
is this could have, in anyway, broke my motherboard ?

thanx again (in advance) for your help...