Hello @Minxster I haven't looked into either of the two libraries in depth so it's difficult to say which will be more helpful for your particular M5Core2 project. @Rop was very active for a while but then moved on to non M5Stack related things I guess. That said, in the past M5Stack engineers weren't too busy adding new features (or fixing bugs) in their libraries once a particular piece of software has been out. So I don't expect too much activity in the M5GFX library except maybe small adaptions to support new M5Stack devices which have a screen. Thanks Felix

Hello @benalb according to the C Back Driver schematic the four channels are powered from the +BAT pin the M5StickC provides but is missing when using an M5Atom with the atom-mate. Thanks Felix

Hello @Radu this is not an actual IC but the describes the M5Stack bus connector which is used for the interconnection between M5Stack cores and modules. Thanks Felix

The UART in question, is that the M5STACK bus IC ? What part number is it ?

@felmue said in cant flash latest m5 stamp c3: Hello @HaSch well, disabling downloading the stub doesn't help anyway - so my idea is moot. I've just setup a machine with macOS Big Sur 11.5.2 and with or w/o downloading the stub the download process ends in an timeout error. What worked for me on macOS Big Sur 11.5.2 however is using the ESP32C3 built-in USB via GPIO18 and GPIO19. Thanks Felix It really seems to be an issue with USB serial driver. I also tried to download and install the CH9102_VCP_SER_MacOS driver from here without success. Trying to install to my MacOS 10.15.7 Catalina ends up with an error: 安装提示 sysex didFailWithError The operation couldn’t be completed. (OSSystemExtensionErrorDomain error 9.)

Hello @Devilstower sorry, at this time I am out of ideas. Thanks Felix

This is a great answer. It is not obvious that this functionality exists.