CEM-L & CEM-H Synchronization utility for VOLVO needed

**jack69** · 1st February, 2021, 04:09 AM

Looking for this soft as codecard discontinue it for some reason.....

Working at my Volvo XC90, been mislead by one of big Volvo specialist in Europe for three months and dump in the end so decided to syncro immo for myself. Have the older version of this tool, but is not for L or H cem

**oskars268** · 1st February, 2021, 08:04 AM

If synhronization is losted by battery discharging , this sw will not helps you.

**MartiLer** · 1st February, 2021, 09:06 AM

can be done by hand.

**jack69** · 23rd February, 2021, 12:44 AM

Absolutely, but need knowledge, otherwise wont work.

**soxten** · 24th February, 2023, 10:15 AM

Need help!
Looks like Codecard has take away small prog for Volvo sync Cem-L to ECU.
Do we have other program that kcan make this sync?

In 2017 I did make a picture of how info is stored in CEM-L when I did help Pauliuz at codecard.
see attached picture.

Now I need help to sync immo on CEM-L to Denso ECU.
Any as now or can help me with info?

**MartiLer** · 24th February, 2023, 10:36 AM

ECM Denso 93A86?

**birchbark506** · 25th February, 2023, 04:37 PM

has anyone had any luck at cloning a CEM H from a 2007 Volvo XC90? i can move the eeprom but the car will not start still. from what i understand is the flash needs to be copied as well. any help would be greatly appreciate

**ricked** · 25th February, 2023, 08:41 PM

Originally Posted by birchbark506

has anyone had any luck at cloning a CEM H from a 2007 Volvo XC90? i can move the eeprom but the car will not start still. from what i understand is the flash needs to be copied as well. any help would be greatly appreciate

"all" things you want to clone from a volvo you need to copy flash also, volvo uses sync data in all of them

**KriptoKey** · 25th February, 2023, 11:59 PM

indeed friend. eeprom and flash are married.
if you want to clone you have to write eeprom and flash

**birchbark506** · 26th February, 2023, 12:39 PM

I already moved the eeprom chip to donor CEM H, now I need to find away to read the flash chip, I tried most of the wiring online with vvdi prog but unable to connect to chip

**achaccha** · 26th February, 2023, 10:41 PM

You can use Multiprog to do flash reading.
But I would like to know if there is any tool that can synchronize CEM H with eeprom ECU 95080 0261S04511 1039S26974 LC.2.
If anyone can provide please contact.
thank you

**birchbark506** · 26th February, 2023, 11:52 PM

Originally Posted by achaccha

You can use Multiprog to do flash reading.
But I would like to know if there is any tool that can synchronize CEM H with eeprom ECU 95080 0261S04511 1039S26974 LC.2.
If anyone can provide please contact.
thank you

you mean smok?

**soxten** · 1st March, 2023, 08:33 AM

You only need to have Eeprom from both CEM-L and ECU.
(Eeprom and flash on CEM-L has crypto that is why you take CEM eeprom sync and write to ECU eeprom and it work)

Need help to sync, see attached files.
CEM Eeprom is 93C86x8
ECU Eeprom is 95P08

**soxten** · 1st March, 2023, 08:52 AM

Here is the program that Codecard did make, but looks like server is down.
Any as can make program like this or have connections to talk to Codecard?

**MartiLer** · 1st March, 2023, 02:33 PM

sync data and keys are damaged from the drawdown of the battery. mileage 389157 km. Read the Id meg48 from the original keys for this car.
I made this program for myself.