How-to Flash Radiomaster ER4 Express LRS Receiver with BetaFPV Dongle

[@baggszilla]

OMG! Thank you for this!!! I took my rx apart and didn't see any uarts and freaked out for a second! Cheers bro!

[@RCVideoReviews]

Glad I could help!

[@samuellp1146]

I took your advice I use the dongle and its a must have for elrs rx. I want to use those small elrs rx in tight spots in my gliders and small park flyers. Futaba and spektrum rx can be really pricey ,bulky and can have spotty ranges too.

[@RCVideoReviews]

The dongle definitely makes problems go away, and yes, ELRS is now my go-to RF tech.

[@johncostello7993]

Great video. I use a desktop computer without WiFi. This worked perfectly.

[@RCVideoReviews]

Nice 👍

[@oneandunique]

Great video! you saved my day ^.^

[@RCVideoReviews]

Glad I could help!

[@sullytrny]

That dongle paired with the 4 pin spring loaded adaptor I fashed 2 ceramic antenna boards and a 915 in under 3 minutes... Thanks

[@RCVideoReviews]

Yeah, those spring loaded pins were a genius idea.

[@sullytrny]

@RCVideoReviews Yeah, the little boards, it's easy to use one hand and just have it on something non conductive, and then it was also good for the older happy model TX modules. All you had to do is take the back off you didn't have to solder the pins, and you could just stick it down in there. Thanks for all your videos and stay dry.

[@JonoRob]

thanks, that really helped me

[@RCVideoReviews]

Glad it helped!

[@dandork20]

Thank you so much!!

[@RCVideoReviews]

You're welcome!

[@SpeedDemonExpress]

Holy shit. Why is this so complicated? All I want to do is bind and fly.

[@RCVideoReviews]

There are plenty of RF options that let you just bind and fly. There are benefits that come along with ELRS if you take a few moments to learn like an absolutely bulletproof RF link, low power consumption, range to beat just about anything else on the market, binding phrases, insanely fast packet rates, etc... But if none of that matters to you, and you don't want to invest a little effort to learn how to setup these RF devices, it's a simple matter to find basic RXs. Look at the FlySky ia-6b. It's got a pretty good rep and works well with TX16s 4-in-1.

[@SpeedDemonExpress]

@RCVideoReviews Too late now. I already bought a TX16S and an er4 and er6 receivers. If I had known it was going to be this much hassle to get it going, I would have stuck with an old radio system. Really not happy that I have to get a computer involved and have to do updates, sd card, save files etc. Effing ridiculous.

[@RCVideoReviews]

Don't know what else to tell you. It's not much of an effort IMHO. Sell it and get Spektrum.

[@gliderrider]

As of my posting, spectrums are mostly sold out. The lower end ones, which should show you how popular they are. Quite a learning curve on these. Just want to fly, not get a computer degree or whatever. I’m trying though.

[@Mikeylikesit1968]

For elrs Lua , what are settings would I use for like flying my warbirds . What would be a good packet rate, Telem Ratio, switch mode and what about Transmitter power , Dynamic

[@RCVideoReviews]

For LOS, 333hz Packet Rate, Std Telem, 16ch and Dynamic will fly just about everything you can throw at it.

[@Mikeylikesit1968]

@@RCVideoReviews So Telem Rate is 1:128 , What TX Power 250 ok or should go higher or lower

[@Mikeylikesit1968]

Ok found STD Telem

[@RCVideoReviews]

Set it at max with dynamic. For LOS it really doesn't matter that much.

[@Mikeylikesit1968]

So one more question Can I use my arming with lets say my Retracts. So gear down arming is off , gear up arming is on or should I just combine that with my Throttle cut switch. The reason I ask is cause I use the 2 of the 6 buttons to do my Throttle cut and can't get arming to work with those. I do also have arming on a different switch and can that be left on all the time.

[@RCVideoReviews]

Yup. You can.

[@mick813]

Cant you use the ports on the base of the RM TX16s

[@RCVideoReviews]

Not to flash.

[@lilmeister44]

Hi John, or anyone that can help….I’m trying to flash firmware to a ER6G via a beta fpv dongle, but I can’t find anywhere online or in the manuals which tells me which channels(1-5) signal pins are the Tx and Rx connections. Thanks

[@RCVideoReviews]

For PWM receivers without a UART, you follow the wiring shown in this video. Pin 2 is TX and goes to the RX pin on the dongle. Pin 3 is RX and goes to the TX pin on the dongle.

[@lilmeister44]

Thank you, thanks for the quick reply. 👍

[@Mikeylikesit1968]

I tried updating that same rx doing it in wifi and it worked but when I tryed to update the firmware its saying mismatch file, can not update and a pop up saying flash anyways and get not enough memory . Why is that

[@RCVideoReviews]

Dunno. Use the dongle.

[@fly249g]

🆒️

[@spiroskatsikas]

What nonsense to fly a plane, very complicated and don't own a computer, not much chance of buying this and I'm in the market for a new radio system

[@RCVideoReviews]

In the modern RC hobby, you're going to find yourself left behind very quickly if you don't have the ability to flash firmware to various devices. Not to say it can't be done, but you'll find the ability to take advantage of some of the advanced capabilities these devices offer somewhat limited. I think characterizing the need to upgrade firmware as nonsense is unnecessarily judgmental.

[@Mikeylikesit1968]

Stick to Spekjunk and you will find later on , wishing you had elrs

[@jeepoyfernandez]

My question sir.why it is need to flash the ER4??

[@michelpetrus]

@@jeepoyfernandez You need to have the same version as your radio. Also latest version will give you advanced capabilities and solve known bugs.