Hi guys,
I’m quite sure that I have seen it before in one post here, but I couldn’t find it. This is a report, not really a problem that I still have, but if in the future someone has the same issue, they can try this.
I just received my second RTK Express Plus Kit, and it came with firmware v4.0. I had some problems with stability on the past with that firmware version, therefore, I decided to downgraded it to v3.9 using the RTKUploader.
Everything was fine according to the program, but when I tried to turn it on again, it wouldn’t work. Apparently the display/screen was dead. The LED worked to show it was charging, and I could still turn it on (it would show on the RTKUploader), but every time I would try to reinstall the firmware, it would turn itself off in a few seconds.
To fix the problem, I had to open my unit, unplug the battery, plug the unit to the PC (Port CONFIG ESP32), turn the unit on, and then update the firmware. Give the program some time to get the firmware installed, and unplug your unit. Once I plugged the battery on again, everything was working well.
After that, my screen was working properly. I don’t know if that is a known bug, or if it happened before, but it worked for me.
Thank you guys.