<![CDATA[New Downloader won't connect on MACOS Catalina]]>Hi All.
I am running latest Arduino IDE and Catalina. My first Downloader with CP2104 chip works fine with my Stamp-PICO.
My new Downloader with CH9102F chip does not work with my Stamp-PICO.
It appears in the Tools, Port as /dev/cu.usbmodem, but the usual usb appears as /dev/cu.usbserial.
It runs ok on a old Win10 PC Laptop, but not on my main iMac.
I get this error(s)
A fatal error occurred: Failed to write to target RAM (result was 01070000)
A fatal error occurred: Failed to write to target RAM (result was 01070000)
M5Stamp tech support sent me a CH34x driver but it would not install because of " OSSystemExtensionErrorDomain error 9 "
While I can still program my stamps with the original Downloader, I would like to get the new one running on iMac!!!
I am afraid that new M5Stack products, going forward will not run on iMac!
Thanks in Advance.
Terry
0_1632540187711_unknown.png

]]>https://community.m5stack.com/topic/3599/new-downloader-won-t-connect-on-macos-catalinaRSS for NodeMon, 11 May 2026 12:04:06 GMTSat, 25 Sep 2021 03:23:27 GMT60<![CDATA[Reply to New Downloader won't connect on MACOS Catalina on Thu, 21 Oct 2021 17:19:33 GMT]]>CH34X driver for the CP2102/CH910?
I'm using the the CP210x driver and have it working

]]>https://community.m5stack.com/post/15193https://community.m5stack.com/post/15193Thu, 21 Oct 2021 17:19:33 GMT<![CDATA[Reply to New Downloader won't connect on MACOS Catalina on Thu, 21 Oct 2021 07:48:13 GMT]]>Hi,
I'm experiencing the exact same issue here. When I try to install the driver you are suggesting I receive the following error:
0_1634802338421_791eda12-257f-45f3-91d0-22bc4963d9bb-image.png

I'm running Mac osx with Catalina 10.15.7
My downloader kit was sold through Distrilec and has serial number K051B21080100053.

Any suggestion?

]]>https://community.m5stack.com/post/15183https://community.m5stack.com/post/15183Thu, 21 Oct 2021 07:48:13 GMT<![CDATA[Reply to New Downloader won't connect on MACOS Catalina on Sun, 26 Sep 2021 02:01:40 GMT]]>try to install the driver?

https://docs.m5stack.com/en/download

0_1632621694333_d5d0424a-e5ad-4a3d-b778-eaeb63c57fd2-image.png

]]>https://community.m5stack.com/post/14982https://community.m5stack.com/post/14982Sun, 26 Sep 2021 02:01:40 GMT