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UMX and AS3X Receiver Programming

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Pete Willbourn11/07/2018 12:24:00
595 forum posts
314 photos

I have a very battered Eflite Taxi , airframe useless but all the radio works .

I wish to put the radio bit into a Sterling Great Lakes mini bipe which I built over last winter .

Now the Taxi RX has so many in built mixes it would be of no use , but there must be a way of re-programming it back to just a normal "plank " requirement like the little Sbach or Yak .

So does anybody know the answer or can help in any way ??


Pete W

John Lee11/07/2018 13:46:42
557 forum posts
42 photos

I very much doubt it. Most BNF Spektrum AS3X receivers are locked and it does not appear that they can be cracked. This thread discusses the AR636A reprogramming, the UMX DSM2 receiver in the HyperTaxi is even worse. As far as I know there is no known way to connect it to a computer to alter the firmware as a starting point.

Pete Willbourn11/07/2018 14:01:55
595 forum posts
314 photos

Thanks John

It is a Hyper Taxi !

Just might have to look for a defunct Sbach or something similar !


John Lee11/07/2018 19:13:11
557 forum posts
42 photos

The other thing you may want to consider Pete is a DelTang receiver as detailed here & also available from other outlets. I used one in a scratch built indoor Tiger Moth without problems.

Pete Willbourn11/07/2018 22:09:40
595 forum posts
314 photos

Thanks John

That info opens up lots of "options "



Andrew Ray12/07/2018 19:22:18
624 forum posts
19 photos

You can re-program the UMX receivers, you need a USB-Interface: UM ASX3 Programmer (SPMA3060).

There is a caveat to this, it works but it isn't straightforward, there is plenty of info out there. I have done it successfully to disable the stability function.

Andrew Ray12/07/2018 19:25:50
624 forum posts
19 photos

Ah, just read that this is compatible with the AS6410NBL rx so it may not work with your rx.

Pete Willbourn13/07/2018 21:22:29
595 forum posts
314 photos

Thanks Chaps

I contacted Horizon Hobbies and they said that the Taxi RX is unprogamable !

so I have my answer,

cheers Pete

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