CN900 Mini key copy machine firmware release to latest version v1.50.2.23 in May 2019.

CN900 Mini 1.50.2.23 Update Feature :
Add: Detect Hitag AES (7A) 88
Add: CN5, CN5-new to copy 4C, 4D or 64 and to generate
Add: Toyota 8A smart key type identification
Improve 3A,88, 8E information display

Free Download CN900 Mini 1.50.2.23 update tool with Win7 Win8 driver

https://mega.nz/#!u2ATCSrB!7iQNPtXTyc5FTntJ_UtVhK6sD-feROXp1Vw02JTu7zY

How to Update Key Programmer CN900 mini firmware to 1.50.2.23 ?
Connect mini900 with laptop via USB cable

Open driver folder, install driver (for Win7 or Win8 system)

Set com port to COM4

Run CN900 Mini firmware update tool on desktop

Press CONNECT

Mini cn900 will display current firmware version and prompt new version available to update

Click on Update

Follow step 1 to step 4 to finish firmware update

Close the update tool

Run update again and connect

The firmware has updated to the new version.