@felmue There doesn't seem to be an answer in the thread you mentioned.

I'm seeing this issue when trying to read from a CO2 sensor.

Here is the M5Burner log from my most recent attempt:

--chip auto --port /dev/tty.usbmodem144101 --baud 1500000 --before default_reset write_flash -z --flash_mode dio --flash_freq 80m --flash_size detect 0x9000 /Applications/M5Burner.app/Contents/Resources/packages/tmp/uiflow2-cfg.bin
esptool.py v4.7-dev Serial port /dev/tty.usbmodem144101 Connecting...
Detecting chip type... ESP32-S3 Chip is ESP32-S3 (revision v0.2) Features: WiFi, BLE Crystal is 40MHz MAC: a0:85:e3:f2:8b:98 Uploading stub... Running stub... Stub running... Changing baud rate to 1500000 Changed. Configuring flash size... Auto-detected Flash size: 16MB Flash will be erased from 0x00009000 to 0x0000efff... Compressed 24576 bytes to 475... Writing at 0x00009000... (100 %)
Wrote 24576 bytes (475 compressed) at 0x00009000 in 0.3 seconds (effective 575.1 kbit/s)... Hash of data verified. Leaving... Hard resetting via RTS pin...

24576 bytes written for UIFlow2!?

@kaidencoolkid No, You need to erase the stick first before burning firmware.

@Yan-Yezi Use Uiflow2 for S3 devices due to a difference in the core functions of the chip/

@EricB if you are on Facebook you can find a free sample of my books as well as some write up on hackster.io

To use UART on a UnitV with Raspberry Pi GPIO, refer to the official documentation of UnitV for pinout details and configuration steps, then enable UART on the Raspberry Pi.

@gordsh thanks for sending, I actually don't know eez studio at all, I have never used it..

@felmue Thanks so much, that fixed it...

@Kabron It was a friendly 'btw'.
There is not a bug or a problem.
It works fine for me on 2.3.4.
Relax and use the version you prefer.

Hi @riztronic
We have fully tested the Arduino code running normally and without a problem!
You can get the newest code here:
https://github.com/m5stack/M5-LoRa-E220/blob/main/examples/P2P_TX_RX/P2P_TX_RX.ino
The test video is here:
https://www.dropbox.com/scl/fi/soim9m8aonp52850p5xqs/361e2e27700890d74db6e65082fd4d05.mov?rlkey=tay4leplto1qlrsl2zt9s549d&st=dff6d295&dl=0
The problem may be that your TX/RX pins are reversed

@pitiaa
哪款产品？

@kaidencoolkid Untill you know how the StickCplus2 works or communicates, only install UIFLow2

@kaidencoolkid Stupid autouncorrect that should have said "my" no "the"!
Yes on my channel.

@brrainz @erickadengler you could just try removing the connector and solder wire between each unit or now that you have a prototype made with units, look up the circuit diagrams on the site and build a custom pcb containing the devices.

Another route is to learn how to make a custom cable/connector.
BTW the connectors on the devices are male and not female and so adapters must be female not male

@felmue the joys of IPV4 blocking

@JourneymanWizard Please Email M5Stack support directly and PM them using twitter.

@lnw_m5dials You haven't provided enough information to help.

What OS?
Do you have a firewall?
Have you installed M5Burner in the correct place?

It could just be the server is unavailable for the M5Burner.