Align BL35P Setup Problem
 

I am installing a new Align BL35P in a new Trex 450 DFC. I have several previous BL35A's and have always been able to enter the setup mode at full throttle. This one will not recognize the setup entry.

Using a DX18, BL35P, BeastX AR7200 and Scorpion HK-2221-8 motor.

It loads with the default modes and only indicates 5 not six modes, but seems to fly fine. But that said, I cannot change anything.

Are there any issues with the DX 18 or BeastX AR7200 interfaces?

Any suggestions would be appreciated.

As I could remember I have one of that ESC before, to enter you need to lower the throttle stick.
Check the setting of your radio th setting, low need to be 0.
to initiate th up then plug ur battery then listen to the beep, if setting is right like the first beep (ex for reverse setting) lower your stick to enter then slide up
for the next following setting.

Yes, thank you I have checked the start at full throttle and that the radio has low including full low trim, but will still not enter setup mode.