How to Fix Keydiy KD-X4 BMW BDC3 Key Copy Error B7?

 Problem:

BMW BDC3 key cloning using Keydiy KD-X4 definitely key is Hungary. Failed with errors code B7 I have tried both laptop and cellphone. Is this key locked (encrypted) ?

Possible reasons:

1). Keydiy cannot copy all BDC3 Hungary keys. Only 90% success rate. Still some models are not supported.

2). The date on the key is before 2020, it can’t be copied.

Better read vehicle information first to verify if it is BDC2 or BDC3 system.

 

Program 2025 Porsche Taycan Key with Keydiy KD-MP and KD-X4

 2025 Porsche Taycan key programming review by Keydiy user:

"Taycan 2025 All Keys Lost programming is done by Keyidy.
(Using a Dealer Key)
Pulled the immobilizer data directly from the dealer key using KD-MP tool, then completed the programming on the vehicle with the KD-X4.
Surprisingly, this particular Taycan had no SFD2 protection active — which confirms that SFD2 is only implemented on select Porsche models rather than across the entire lineup."

Credit to Vlad KeyMan.

FLEX SID321 ECU No Virtual Read Solution

 Some users have a problem with virtual reading Renault/Nissan Continental SID321 ECU.  MMS Flex says no virtual read available for this sw version.

How do you solve it?

Soltuion 1:
Ask the customer to go back the Renault service, ask them a software update, and you could do the newest version.

Solution 2:
Switch to AutoTuner, they have a much larger database on these.
Autotuner has a bigger virtual database for this ecu. Flex not.

KESS3 also do these via OBD easily.

AutoTuner Volvo SID807Evo Not Supported via OBD/Bench Solution

 Problem:

Tried to read Volvo V50 D2 engine SID807EVo ECU with Autotuner but it said “this version is not supported via OBD/Bench.”
Tried bench, no luck.

Any ideas on why this problem is with every Volvo V50/S40/C30/C70 with D2 engine?

Solution:

The first of this evo is not password protected. That’s why it fails on these.

Some first versions of V50 with sid807evo not supported, only boot mode is possible to do.

Same with the first in v70. Tools are looking for password and fail. And no tool developer has done anything about it. It regard all brands with this ecu in 2010 and early 2011.

If no password, only boot.

Only boot on these. You have to do boot with Citroen protocol. It needs to be treated like a PSA. Citroen or Peugeot protocol.

 

Feedback:

Did it in boot. Now car is not that slow anymore.