Ultimate Multi Tool Pro is a combination of 2 boxes - UMT Box and Avengers Box. Ultimate Multi Tool (UMT) Pro Box - Flashing, Remove Sim Lock, Repair BT, Repair IMEI, Wipe Phones, Remove Google account.
Chimera Tool UART cable is a USB Serial converter cable.
With Chimera Tool UART cable you don’t have to use any boxes anymore.
Connect your phone directly to your computer, using this cable, and you can use Factory Unlock functions just as before.