BMW F30 FEM eprom data lost

[gabrilupo]

i have same issue, i found another eprom, write it adpt it to car code it, but keyless wont work, then i tryed virginize fem and keys, adapt it and code it, same situation car starts only in column emergency coil.
now i orded new key, i hope tomorrow ill solve issue.
otherwise used fem with keys.

[u.s]

try programming new key and it should work, also if it is manual gearbox you will need to virginize the elv.

[amar28]

For the guys wondering why when a FEM flash fails you cant fix it

FEM has 2x SWFL, they control the ignition, if both SWFL become corrupted then the FEM does
not know when and how to cycle the ignition, this is why you hear the relays clicking, if the bootloader is ok you may be able to restore the SWFL by updating istep, if the BTLD is corrupted then its likely a new FEM

if only 1 SWFL is corrupted and the other is ok then the FEM can be restored

[drugowaz]

When relay click theres no communication with any tool.

[amar28]

Strictly speaking thats not true, when the FEM/BDC solution was first introduced many tools had a problem whereby the original coding could not be restored, when this happens it also starts clicking, no ignition etc, easily fixed with esys. This can be seen on yanhua threads where people were complaining that the coding data cannot be restored hence why yanhua released the engineering menu, same with DP4. This is from my experience of working with many FEM/BDC

[drugowaz]

Im not talking about coding or eep lost. This not matter. Im talking about when flashing process and flash erased corupted in bga chips,power interupted etc. Its gone. You can do anytjing you want module will not comunicate with any tool. This is already tested with many tools,istas pistas huistas not matter. You will not be able to restore it. If you know how to doit ,write manual how to amd sell. I will be first who buy it

[amar28]

A few days ago, Doing FEM on bench, Power supply cut at 60% upgrading, Vin = YYYYYYYYYYYYYYYYY, Key frequency: kein frequenz (no frequency)

fixed in 20 minutes all working fine, As i say if bootloader is there then any ECU can be recovered, If no bootloader then your likely in trouble

[razzyb]

Im not talking about coding or eep lost. This not matter. Im talking about when flashing process and flash erased corupted in bga chips,power interupted etc. Its gone. You can do anytjing you want module will not comunicate with any tool. This is already tested with many tools,istas pistas huistas not matter. You will not be able to restore it. If you know how to doit ,write manual how to amd sell. I will be first who buy it

Hi Drugowaz, I had same problem I damaged FEM 95128 with heat. i have no backup file for 95128.

it there ant step by step solution fon instructions you can provide. Thanks in Advance

[drugowaz]

Read from beginning. Experts write hot to. After test ,report

[electro10]

SOLIUTION for "profesional" DRUGOWAZ
NO NEED TO BUY ANY NEW FEM !!!!!!!!!
find any 95128 dump from here make all programing fem with vvdi2
restore coding
now in car key must start only from emergency coil
next
at first read isn by vvdi from working key
erase key with vvdi
disasamle key
renew key by vvdi key tool or vvdi prog
program "old" -new key with vvdi2
AND ALL !!!!
maybe all that can do with bmw explorer or autohex or anything else
PRESS THANKS FOR WHO IT WILL HELPS

Hi,

I burned EEPROM,maybe with overheat.
Now, I will write an EEPROM from here, but following your steps I have a question: what is "restore coding" ? I will write dump on EEPROM, mount FEM and after programming keys with AVDI, right? I don´t understand "restore coding"...

Thank you!

[alex_r_2001]

How i can flash if i cant read fa with esys ?
As my experiance expacialy vvdi bmw like russian roulete
I am thinking to buy autohex as i read its good opinions from users I have bmw explorer and his do not assign my in many years but it do not have update ecus fuctions .vvdi bmw as i try have many many bugs . With esys are complicated to work


Sent from my iPhone using Tapatalk

You can go to (vin.help) make account and download FA and VO as per vin for car... Then proceed to flash with e-sys...

Very helpful site when FA and VO is lost when people swap parts from different vehicles.

Goodluck...

[fuzz1]

Hi,

I burned EEPROM,maybe with overheat.
Now, I will write an EEPROM from here, but following your steps I have a question: what is "restore coding" ? I will write dump on EEPROM, mount FEM and after programming keys with AVDI, right? I don´t understand "restore coding"...

Thank you!

Hi

I found at least two people saying eeprom got burnt. Is it some special eeprom that is less protected?
or is it glued?

Or some other thing ....

thanks

[Antonio266]

Hi

I found at least two people saying eeprom got burnt. Is it some special eeprom that is less protected?
or is it glued?

Or some other thing ....

thanks

It's glued, in my opinion it's better not removing from pcb

[p1et]

It's glued, in my opinion it's better not removing from pcb

But many other eeproms are glued also, especially from Trucks ECU's and I never heard anyone burned eeprom, maybe broken/lifted soldering pads but not damaged eeprom. There must be something odd in those FEMs eeproms because I heard 10+ times somebody lost it's data after desoldering or eeprom just snapped in half

Personally I don't do FEMs, for me it's useless to do it as key from dealer is almost same price as people offer and it's much risk. I can do if AKL because then time matters but spare key, hell noooo, not for me.

There are at least 3 steps when you can fck up.

1) reading eeprom - you can damage while desolder or you can read wrong data, either using clip or after desolder. Known case here when some tool just read this FEM eeprom wrong and in this case you don't have original backup so when you modify file, and write, you messed up
2) reflashing process will interrupt
3) original coding won't restore

That's too much for me

[jodge]

It's glued, in my opinion it's better not removing from pcb

i always removing from the pcb only with soldering iron +scalpel + plier and never ever with hot air nor IR (cool stuff tho). For me it's easy job and for me the only safe way to make a solid backup.