Volvo CEM how to read Flash 28F400

[lmqcatarino]

Any tip how to read Flash 28F400 or remove the metal frame from CEM?
PSX_20200809_094101.jpg
PSX_20200809_094204.jpg
PSX_20200809_094142.jpg

[drugowaz]

Just cut frame,if you want desolder

[janusz21]

AND http://www.digital-kaos.co.uk/forums...=1#post3196027

28F400 wery sensitiwe hot air

[rob h]

Jtag Smok programmer can read these.
I read 1 unit, worked well.

No need to remove it.


https://obdtool.nl/index.php?route=p...56&search=jtag

The programmer, plus licentie for cem, 160Euro.
The programmer itself, does have some free eeprom function, and all payable option like micronas, renesas, etc work really well.

[jodge]

Jtag Smok programmer can read these.
I read 1 unit, worked well.

No need to remove it.


https://obdtool.nl/index.php?route=p...56&search=jtag

The programmer, plus licentie for cem, 160Euro.
The programmer itself, does have some free eeprom function, and all payable option like micronas, renesas, etc work really well.

or this... great stuff for 50usd

[rob h]

Have considered buying it, there are some posts out there. Cheap for sure.
Did not find many good results posted.

Ruining the cem, would have cost me more thaen 50usd, and more then 160E.

[whiskeyman]

or get a nice chunky solder iron and bend a wire too shape for both sides

just watch dont fry anything
https://www.youtube.com/watch?v=xMXJTLWyBCo

[rob h]

I ordered one of these, form China.
A1259B hot air nozzle.

Soon as it arrives, i will try it.

[p1et]

or get a nice chunky solder iron and bend a wire too shape for both sides

just watch dont fry anything
https://www.youtube.com/watch?v=xMXJTLWyBCo

That is horrible looking method.

I have no idea why even try something like this. Hot air is quicker, safer and just more proffessional...

[whiskeyman]

That is horrible looking method.

I have no idea why even try something like this. Hot air is quicker, safer and just more proffessional...

i remember when flooding with solder was safest method

[lion0304]

Hot air station, TL886 + Adapter, quickly and job done.

[lmqcatarino]

Thanks to all.
I will look for Jtag Smok programmer.
I think it's the easiest and clean way.
I hope it will be safe read and write Flash by BDM.

[jodge]

Have considered buying it, there are some posts out there. Cheap for sure.
Did not find many good results posted.

Ruining the cem, would have cost me more thaen 50usd, and more then 160E.

i guess you are not familiar with the JTAG based protocols it's an official well documented development/debug port not some cracking/hacking/messing stuff
you unable to fry anything no matter the tools unless if you mixing the pinout
You have to providing the mcu loader(s) if you unable to doing that you get an exception (error message) thats all

[Cromwe11]

or this... great stuff for 50usd

+1 for this had one for about six years only use it for Volvo CEM’s paid for itself a 100 times over.

[lmqcatarino]

Hi, and thanks for all suggestions.
I didn't get any response from smok, so I had to go on harder way.
So I cut the metal frame and could remove flash from CEM and read it with VVDI-Prog.
PSX_20200813_203637.jpg
Open file with tango. There was 3 keys programmed, so I program transponder on key 3 position and generate new file.
Then I open that file and program another transponder on 4 key position. New file saved.
Then I write last file to flash.
All ok. Transponder key 3 start car.
There was an accident with transponder key 4 and lost it.
It's possible program a new transponder without need to write new file again to flash?