Look here: how to renew BMW E series 868MHz remote PCF7945 to unlock

Tools to use:
Tango Key Programmer – unlock the remote
Xhorse VVDI key tool – renew the remote

Note that, you can renew and unlock the remote with one Key Program Tool only if you have a VVDI Prog programmer.

Steps… here you go.

Step 1: read BMW key PCF7945 info with Tango Scorpio

Put the chip into it

Read key info

Brand: BMW

Transponder: PCF 7945

HITAG Family: HITAG2+EE

ID: 74F65097

Remote: 868MHz

CryptoKey: Customer (Locked)

Step 2: unlock BMW 868MHz remote with VVDI Key Tool

Remote unlock

Select BMW, then E series 868MHz..

Connect the key to the key tool with an adapter

Writing data

Renew BMW remote successfully

Step 3: read new info of BMW key PCF7945 via Tango key programmer original

Connection with the chip, VVDI key tool and Tango

Explore key

Key info

Brand: BMW

Transponder: PCF 7945

HITAG Family: HITAG2+EE

ID: 74F65097

Remote: 868MHz Keyless go

CryptoKey: Customer (Unlocked)

Success!