User feedback: Copied the 2025 Mazda CX-5 smart key using the CGDI K2 key tool—saves you from having to buy the code.
Read original key information.
Remove original key shell, solder wires to the key cuircuit board via renew cable.
Connect renew cable with CGDI K2 unit.
Go to MCU Programmer.
Select correct NCF29Ax chip type.
Read and save key data.
Then solder wires to the new key.
Write chip data to the new key also modifies key ID.
Don’t need to learn key afterwards.
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