BMW X3 CAS4+ corrupted

[baddaren]

Hello Locksmith friends
Have custemer with BMW X3 Suv Year 2016. CAS4+, saved D-flash and P-flash with VVDI Prog. Tried to make key, did not work. Tried put orginal D-flash and P-Flash back, not working. Was it encrypted? anyone?
VIN WBAWZ5105H0S30055 . chip in CAS , 1N35H Regards J

[vialli]

What exactly could you not to do? In D-flash you have keys on positions 1,2 and 3, after you generate a new key on the following positions you don't have to write anything in CAS.
You have to activate the key by holding it on the place with the reception antenna (there is a key symbol there) and press the start button

[baddaren]

Thank you for helping, customer is really pissed. I put cas back and try then? I could read out ISN from key. Did you check P and D-flash? did they look ok?
I think I tried to downgrade P-flash with CGDI BMW, Mayby someone has a P-flash? I can write P-flash back? Regards J

[baddaren]

I used this, and after I was done Dash ligt would not come on917912
Think I need P-flash anyone.

[fred77]

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[fred77]

cheap china tools were your trouble
Hope somebody can help - but if not a replacement CAS comes next day with extra key ~£800

[baddaren]

Hello Fred, where do I get that from? Jakob

[lupu_sandu]

P-flash it's ok. so problem is in dflash or in your soldering.

[baddaren]

Thank you Lupu, Write P-Flash back second time. But this time I locked it when done writing, now works! Car starts, remote works and spare key works. Does the locking in VVDI Prog has anything to do with it?? Does P-Flash has to be Locked. Thank you for help and support. J

[newone]

you do not have to write anything back,you read d-flash and then load it in a programmer to program key,thats it,after you present key to car to be activated like @viali wrote in post #2

[vas100]

Hi never kill cas4 with vvdi . More then 30 cars . Read backup option is very safety. the problem is between the chair and the table

[baddaren]

Thank you guys,I know I never have to write back p-Flash. But somehow I was tired, made a mistake and downgraded CAS4+, CAS corrupted. My mistake. Wrote it back and keys did not work on bench. Wrote P-Flash back again and locked it, everything worked. Does the locking with VVDI Prog have anything to do that it worked or was it my soldering? Used D-flash to make Key IN CGDI BMW. Happy ending. J

[Nik0tinE]

this car has a long isn stored in the key+cas AND INSIDE THE DME. you need to input the long ISN when you modify a cas3+ or later CAS4 system!!

[p1et]

Why even read P-Flash? Some users like to over complicate their job.

[baddaren]

If saving P-flashes for different CAS 4/CAS4+ cant you do it by obd. And if it does not work, just write the P-flash back? I am I right?

[p1et]

So you want to tell me you remove CAS module from vehicle and read P_Flash which is risky with VVDI, just in case when in future you corrupt same HW/SW flash by OBD? That's interesting thinking process : D

[baddaren]

If I understand you right P1et, you remove CAS4. Read D-flash and make key? You do not read P-flash and you do not make key by OBD? If having different P-flashes for Different CAS 4 and CAS 4+, can you use them if OBD programming goes bad? There seem to be some people looking for P-flashes. Regards J