Hi,Yeah, on my car I needed to shift keys around so that the alarm was correctly enabled and disabled (you can't program new keys when the alarm is active, but cannot deactive the alarm unless you have a programmed key, you can though program a new key if you disconnect the alarm, but then its out of sync).
When you are talking about swapping high and low values do you mean the endianess? Could you send me a copy of the files before you swapped the values and after?
I dont know why all this complicating...look, dump the eeprom with neoprogrammer, look at it(it has only few values), save it...thats your backup!!! Now open this dump again an hit swap button,save it again and use different name. Put that .bin into decoder and write down key kodes on a paper. Instal all back into the car and unlock the receiver to introduce new key...this procedure should have nothing to do with alarm or anything because just ads new key code.and you are on the safe side because you are using cars original code to unlock.
Now take the reciver back out from car and dump it again,hit swap and save it. Decode it an check the key code number 3. Copy the address values to neo programmer on the address of first key and rewrite other address with zeroes. Swap it again, save it as new bin. Than flash that last bin to eeprom. Instal in the car and will work 100%.
Actualy when you unlock the reciver using old key's code and introduce new one you dont have to do last step to be able to use that new key,it is just for safety that car opens only one key.
Let me know if you tackled it or i will send you bin files but i see no reason or how it might that help you since you have your files that are basicaly the same except values on the key code addresses.