Volvo XC70 2011 CEM and keys

[armpower]

Hallo

I've a xc70 with faulty CEm (erratic dtc about Can lines).
cemDelphi.jpeg
I've managed to obtain a second hand unit.
I've extracted the pin from the original and used CEM with Abrites.
Read eprom, flash e data flash files with I/O terminal from original unit and transfered
to used unit.
Installed the used CEM with cloned data.
Original Key is not recognized.
My question is.Have i made some mistake during cloning or the second hand unit need to
re-learn keys?
I ask because is the first time I made some work with used Cem.

Thanks

Cheers

[oskars268]

Theoretically you didnt done anything wrong, maybe some mistake on writing, wrong file chosed e.t.c

[armpower]

Solved

Correct procedure.
Read in sequence
1: Eeprom
2: Flash file
3: Data flash file

Write backwards:

1: Data flash file
2: Flash file
3: Eprom

Thanks to all

Cheers

[solitaire]

Solved

Correct procedure.
Read in sequence
......

it's not important sequence if you read/write with io-terminal, because CEM is in boot mode, eprom or flash is same, you can read 100times and will get same result.

[armpower]

Hallo

Just to add some info,
I've read the file from original CEM.
Rewrite in sequence eprom, flash e dataflash file in used CEM.
Installed cloned CEM.No key error in dash.
Reading via OBD with Abrites PATS key information but no programmed key present.
Tried three times to rewrite files.And read again from original unit e write to used CEM.
No way.Same error.
I've writed the file in back order.
First dataflash file than Flash file and eprom file.
Works instantly.
I don't know what's happened but now works.