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De mistake to erase mcu on cas2 immo help
14-05-2016, 17:32 PM,
Post: #1
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De mistake to erase mcu on cas2 immo help
I was doing spare key on bmw e60 with cas2 immobilizer i read eeprom file with xprog m 5.55 sucessful.i prepare key with tm100 and try to write eeprom back to immo was not done stop at 1% try so many times.i erase eeprom still same.costomer on my neck i can't sleep.
i need member here should help me |
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17-09-2019, 14:10 PM,
Post: #2
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RE: De mistake to erase mcu on cas2 immo help
You may need to get another used cas and copy your data to it.
Always read and write back immediately to be sure all is ok with the tool you are using. Cas2 is a dangerous ECU. |
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17-09-2019, 15:25 PM,
Post: #3
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RE: De mistake to erase mcu on cas2 immo help
As far as I know, it's no need to write back data to eeprom after making a key. The key is automatically assigned to the key slot when the car is used with this new key.
Only BMW services:
Remote coding/programming - E, F, G serie HDD change, Carplay, Screen mirroring activation FSC pack - CIC, NBT, NBT EVO, ENTRYNAV2, MGU, KAFAS Remote reset 8HP ISN F serie ELV disable for CAS3, 3+ |
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17-09-2019, 23:30 PM,
Post: #4
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RE: De mistake to erase mcu on cas2 immo help
(17-09-2019, 15:25 PM)Matthew53 Wrote: As far as I know, it's no need to write back data to eeprom after making a key. The key is automatically assigned to the key slot when the car is used with this new key.+1 Many programmers tell you to write back a modified eeprom. Never do that! My VVDI2 always tells me to write back a modified EEP file after programming the key, never wrote it back and keys always worked If my post was helpful to you please give me a thanks and/or reputation
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18-09-2019, 00:48 AM,
Post: #5
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RE: De mistake to erase mcu on cas2 immo help
Yes, never write back modified eeprom. If you actually load that modified file back in the program, you'll see that the key data is corrupted.
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18-09-2019, 07:20 AM,
Post: #6
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RE: De mistake to erase mcu on cas2 immo help
Interesting. I noted this with later CAS3+ and CAS4 but never tried it that way with cas2 and cas3. Will try that out. Still CAS2 corrupts even just reading it. It is rather volatile.
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