new m5stack: Failed to write to target RAM (result was 01070000)
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 I have installed latest driver https://www.silabs.com/documents/public/software/Mac_OSX_VCP_Driver.zip and can see the corresponding extension in /Library/Extensions with drwxr-xr-x@ 3 root wheel 96 Oct 15 10:46 SiLabsUSBDriver.kext but then when running M5Burner it only show a tty device of type Bluetooth or usb modem ls /dev/tty.* /dev/tty.Bluetooth-Incoming-Port 
 /dev/tty.usbmodem51850037101I am running macOS Catalina 
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 @darul75 said in new m5stack: Failed to write to target RAM (result was 01070000): I have installed latest driver https://www.silabs.com/documents/public/software/Mac_OSX_VCP_Driver.zip and can see the corresponding extension in /Library/Extensions with drwxr-xr-x@ 3 root wheel 96 Oct 15 10:46 SiLabsUSBDriver.kext but then when running M5Burner it only show a tty device of type Bluetooth or usb modem ls /dev/tty.* /dev/tty.Bluetooth-Incoming-Port 
 /dev/tty.usbmodem51850037101I am running macOS Catalina /dev/tty.usbmodem51850037101 is the correct device, I'm not sure what's going on in OSX but this is how it appears for me and the device that works for me. 
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 Great thanks, I will try again later, in the meantime I switched to a Windows machine to make it working. 
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 I had weird problems like this with an M5Stamp-PICO until I put more capacitance across the bus (5V and 3.3V). I used a couple of tantalum capacitors I had on hand, not sure the value, probably 33uF. I was powering the device through the USB serial adapter and apparently it was power limited. 
 I have had no problem whatsoever since then.
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 @ajb2k3 
 Same thing is happening to me:Start Burn 
 "
 --chip esp32 --port /dev/tty.usbmodem53190095701 --baud 1500000 --before default_reset write_flash -z --flash_mode dio --flash_freq 80m --flash_size detect 0x1000 /Applications/M5Burner.app/Contents/Resources/packages/fw/core/Core2_Tools-v1.0.0.binesptool.py v2.5.0 
 Serial port /dev/tty.usbmodem53190095701
 Connecting...Chip is ESP32D0WDQ6 (revision 1) 
 Features: WiFi, BT, Dual Core, 240MHz, VRef calibration in efuse
 MAC: 08:3a:f2:66:b7:70
 Uploading stub...A fatal error occurred: Failed to write to target RAM (result was 01070000) Burn Failed 
 "Fighting for over 10 hours.. I'm dying here.. 
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 Same here - Have You found any solution? 
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 This was a known issue with Big Sur (something related to the python and / or serial port implementation in Big Sur. 
 I did contact M5Stack support but no solution has ever been found.
 I gave up and reverted back to Catalina and it worked fine again.
 Now I just installed the latest Monterey but haven't tested the Core2 yet.
 In the meantime I was also using a windows computer....
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 @erich I'm on Mojave 10.14 and problem still exists :/ 
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 I’m actually getting it with Catalina 
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 Has anyone managed to get the core 2 to work with an M1 mac? I think that you do not need the driver for the m1? With a m5stick C it works fine, but not with the core 2 
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 I have the same issue when I use the M5Stack ESP32 Downloader. 
 However when I use a simple M5Stack Atom Matrix, its works fine.I am on OSX Big Sir. I feel like the issue is related to the CH9102 chip on the ESP32 Downloader where the Atom has the CP2104 I think. 
 This theory is supported by this article here:
 https://blog.squix.org/2021/08/ch9102-driver-issues-failed-to-write-to-target-ram.htmlConfirmed, installing the driver from this thread here worked for me 
 https://github.com/Xinyuan-LilyGO/LilyGo-T-Call-SIM800/issues/139
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 @exie said in new m5stack: Failed to write to target RAM (result was 01070000): I have the same issue when I use the M5Stack ESP32 Downloader. 
 However when I use a simple M5Stack Atom Matrix, its works fine.I am on OSX Big Sir. I feel like the issue is related to the CH9102 chip on the ESP32 Downloader where the Atom has the CP2104 I think. 
 This theory is supported by this article here:
 https://blog.squix.org/2021/08/ch9102-driver-issues-failed-to-write-to-target-ram.htmlConfirmed, installing the driver from this thread here worked for me 
 https://github.com/Xinyuan-LilyGO/LilyGo-T-Call-SIM800/issues/139I guess you're right as I noticed on banggood/ aliexpress some products using this CH9102 chip are tagged as not Mac compatible. 
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 @mackone try connecting the downloader's 3V3 to Stamp Pico's 5V 
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 I found a solution that works on Montery :-) Make sure you follow the PDF instructions, this works M1 Mac M5 Epaper 
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 @parahooner Very many thanks for posting this, it completely resolved the problem. 
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 I still have the same problem with 5 new M5Fire on Big Sur. Two older ones burned succesful. 
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 @drjakob Check which USB driver is in the new cores as the driver chip was changed due to the part shortage. 


