Hello Cristi !
uBitx manager does not work with original firmware.It works only with CEC firmware. Please read article about how to make work the manager with original Fahran's firmware on Ian's site : hamskey.com. The problem is to store the original alignment? values and apply them to CEC firmware. Not sure but maybe the solution is on Ian's site. In worst case scenario you have to make a new alignment following the instructions again from Ian' site. It worth to go with the latest CEC firmware, it is compatible with all versions of uBitx and supports LCD 16x2,16x4, or nextion display.Has a lot of new features nonexistent at original firmware. Hope it was useful.
73.s yo6po