'99 Fiesta 'MASH' 95040 solution

[PocketHero]

A client lost all keys for this car, so I was pretty sure that this will be an easy job. It wasn't...

1st day
Ignition switch out & make a key was fast as usual, but when we tried to teach a new key with CK100 then came the nightmare. 800 seconds to wait every time, and at the end we got allways an error message, like 'connection lost' or 'ECU disconnected' and such ones. I tried to delete all keys, what gave the result, that the keys were deleted, but nothing more, got another error message when I could teach the new keys...
Ok, no problem, unmount the ECU, and we will see.
I found the following funny content in the 77012: Keys count 0, but still have datas in the second keyslot.
Then I wrote a 4C chip into the second slot with Tango: car won't start, red light is on continously. Add key not possible.
When I tried to add a 4C in the 1st or 3rd slot, then TMPro2 couldn't identify the file.
Tried to teach keys with SKP900, TrueCode, CK100, MVP Pro, Abritas - got only error messages.

2nd day
Wired a new connector for Orange5 on the EPROM, to avoid unnecessary in- and outsoldering, tried to write a working key into the dump without success.
Had another same aged Fiesta this day, this time with a 'LAZY' ECU (TMS chip), the car was ok in no time, and I had its dump. Later I could make a content from the two dumps what was able to start the engine one time, but nothing more.

3rd day
I tried to teach another key to the vehicle without success, didn't matter what kind of dump was uploaded...
As last chance I registrated to DK, and readed all topics & post what had anything about same aged Fiestas. I've found some promising dumps.

4th day
After the uploading the most promising content I could teach a key to the car. When the engine started, came a guy telling that he found the lost key :lmao:

Sorry for my poor English, never learned the language, just (mis)using it...

Thanks given to Gpmoto2 for the content, and Oknid, who gave my hope back with his same torture.

[szengen]

fiesta 99 ,Sbb resolves it without the brochure,

[PocketHero]

No. Neither SBB or CK100 (thats better than SBB). Believe me, I tried...

[Bllinda]

Upload the original damp