Hello my friends I'v got: ECU is

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Bosch EDC16C34

ECU HW type:

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1037374179: c35382b,
hw:9653958980 sw:9658944580

in PSA 307 1.6HDI 2005.

I have read it with KESS2 over OBDII port without problems. Saved .ORI file 2.097.152 bytes.

Saved data is all just hex value FF until byte 1.834.868 where I see some data, that leaves me with 262.260 bytes of data of some kind till end of file.

My guess is KESS cannot read all data from ECU addresses and for them KESS stores FF vlaues.

Now I wonder if I try to write same .ORI file back, will I get problems? - Why you might ask?

Well I assume some addresses in ECU are READ only, others are WRITE only, so WRITE only address KESS reads as "FF" what is 99.9% possible WRONG or BAD values, when I put my .ORI file back it might be a mess!? or not? Does KESS actually write FF values or not?


PS: I do not have FULL backup from bench just this OBD reading.. otherwise I would test myself and confirm my theory.
Please comment about this!
Rgds, Chu!

KESS only reads calibrations.
KTAG (bdm) reads FULL FLASH.
all.

Is there anyone out there qith FUL KTAG read for Peugeot 307 2005 1.6 HDI 9HY manual Bosch EDC16C34
ECU info is:

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Bosch EDC16C34
ECU HW type: 0 281 011 629
1037374179: c35382b,
hw:96 53 95 89 80
sw:96 58 94 45 80


I need it as safety if anything goes wrong writing with KESS.

Thanks!