12220685.bin is an update for Calibration part number: 12204887
I guess the base and rom are the missing link. Rom also suggest it is a Read only memory.

I did some hack job and this is what I got. flash_data_upload.txt 12220685.bin It looks like that only 01-02 ebcm can be updated via tis2000. 03-04 might be already upto date. The ebcm also could be a delphi variant of bosch 5.3 ebcm. If that is the case, no wonder it is complete POS. The binary doe...

Building bin from scratch will need Os segment 0-4000 and 20000-till last 2 bytes of bin caldata segments 8000-end of last caldata segment. Check if caldata segments are in correct order and size. Fill last 2 bytes of bin and the space between last caldata segment till $20000 with 4AFC. Copy 4000-80...

AT $4000 or $6000 69 CD C5 E4 00 C0 02 EB 31 4B 41 30 33 4C 31 55 33 32 36 36 BC 00 39 56 00 C0 13 87 59 46 5A 42 00 31 47 31 59 59 33 32 47 34 34 35 31 30 39 32 33 32 3A 67 00 00 00 00 00 00 00 FF 00 00 80 14 80 30 7F E7 7F D7 FF FF FF FF FF FF FF FF FF 00 FF FF FF FF FF FF FF FF FF FF FF FF 00 00...

Now the save and exraction works as expected. I think the most appropriate file extension is just .bin. It is a binary file anyway so there will no confusions, especially with the labeling system you have applied. I tried to save invalid bin on purpose and the program crashed. You might add some sec...

I am having trouble saving the bin. Instead of bin saving dialog I have bin open dialog. Not sure where the problem is. When I tried to extract calibration I set the description and than nothing seems to happen. It might be an xp issue though. The .cal format you use is identical with the tunercat`s...

Just tested and it worked flawless. Any segment starts with the following data example 13 D8 -checksum of segment 00 04 -segment numerical number [01-08]01-OS;02-08 cal data 00 F8 2C 27 - segment p/n in hex [00 F8 2C 27=16264231] 54 52 -Gm version identifier in ASCII [54 52 = TR] For OS this is save...

As for moving forward, WriteMessage(...) et al will need attention. Writing will be the same as p01 and p59 intel and amd chips except for the following changes: chip init Load $0006 - word_fffffa4c $6820 - word_fffffa4a $7020 - word_fffffa4e $0006 - word_fffffa48 For intel chip only: before erase ...

Nice work. I am having trouble running it on xp. Any chance it will work on xp.
If you want to make it even better I have some ideas for future improvements.

Sorry for the typo error.

It is 36 00, what I mean, and yes single upload only.