BMW F30 FEM EEPROM Data Lost Solution

Question:

BMW f30 after desoldering 95128 eeprom all data lost {maybe overheated }
in new eprom I wrote data from another FEM but car now starts only from emergency coil { remote did not works}
I tried to write many dumps from another fem . update FEM with ISTA , but remote still not works
is there any possibility to restore data ?
what if I add new key ? remote will works on new key ?
OR I NEED TO BUY NEW FEM ?

Chief engineer replied:

1. New fem or used fem with keys and adapt. Ori eeprom and keyless wont restore

2. Program new key for this FEM then the car start it should start by keyless, or use the same FEM renew it and adapt it by AVDI

Final Solution:

SOLUTION for “professional” DRUGOWAZ
NO NEED TO BUY ANY NEW FEM !!!!!!!!!
find any 95128 dump from forum make all programming fem with Xhorse 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
disassemble 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
Any other solutions?

I have done many FEM replacements from used modules, DME/DDE CAS ect ect. And to be honest on a scale of complexity this is a very straight forward job just need the right tools. For some it will make no sense to invest in these tools and so a new FEM will suit them fine. Even professionals buy and fit new parts!

Good luck!

So, which solution is suitable for you?

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