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The resistor was installed a long time ago to work on the native Turingy firmware. I don't need telemetry yet, I don't have a receiver for it.

It's working ! A modification was made for the trainer to work on the Jack connector. The 4.7 k resistor lowered the signal level and the module flashed red. Removing the resistor fixed everything. Thanks a lot.

My module blinks red every 0.5 seconds. Photo at least external, if you can not take a picture of the Board inside.

Very interesting. It turns out that the Jp4In1-se module is not compatible with er9x firmware. Although the hardware differences are minimal for these modules. Can you take a picture of your module, preferably with the internal Board on both sides.

Hi.
IRANGE X Plus works in serial mode on er9x ?
The rotary knob must be in the zero position.
The red indicator on the module does not blink when the MULTI mode menu is selected ?

Well, it's just not clear what to flash and what changes it works with. Simply i woud like to run on Tutingy 9x(m64 stock) miltiprotocol module jp41in1-se(only serial mode) Transmitter - Which file ? (er9x.hex, er9x-frsky.hex) TX module jp41in1-se ? (multi-stm-ppm, multi-stm-erskytx,multi-stm-opentx...

What firmware should I use for er9x ?

multi-stm-ppm-taer-noinv-v1.3.0.53.bin or multi-stm-opentx-aetr-inv-v1.3.0.53.bin ?

Hi Mike,

The red led only blinks slowly. Not became solid.
er9x(m64 stock), FW er9xProv822m
This is module jp4in-se (FW v1.3.0.53):

Hi. Multimodule Jp4In1-se work with er9x ver pkr822 (30-07-2019) ? I have this module flashing red and can't find the signal from the transmitter.
Which firmware of the multimodule Jp4In1 was the pkr822 version tested with ?