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I gotta say, it's really weird. After using it for a bit. the voltage got lower than 10v and now the message is not happening anymore...
What is the lower voltage that I can use the radio, (so I know when to charge it)

That narrows down the alternatives. If the solution is to load new firmware you need to get hold of a cheap USBASP adapter and solder a contact to the main board of the radio. The solder job is very easy, but if you do not want to do it yourself you might know someone who knows how to solder. Then ...

I have heard that HK has had a bad batch of V2 Firmware Radios with faults.. need to reflash the Firmware was the solution. I can't find the thread at the moment.. but sounds very familiar. That sounds very promising, I really hope it's a firmware issue than hardware one. Really difficult to get an...

I would flash the radio in no time but I can't get the no-soldering board in my country (Argentina).
I'm algo afraid that the error will also persist after flashing cause seems like a sequence of steps to make it boot like that. Could this happen with the new open firmware?

Should I try to calibrate the radio to see if the message still shows up every now and then?

I would think the only possibility is that the trim switches have a problem and the radio sees them as descriped on power on... Do the trims work fine when the radio is on? Yes they work propperly. Just used the radio yesterday and trimmed my plane. I just clicked all the trims with the radio off t...

Right, sorry about that, it's the turnigy 9x with original firmware.
I should move this into that thread or ask a moderator to do so.

Hello everybody, I'm new in the turnigy 9x and sometimes the radio on the first porwer up after leaving it for some time (an hour or so), I'm getting this message that the radio shows V14 and COOL with a bunch of Chinese characters and 0000. This goes away after I power off and power on back again b...