RAK7200 firmware upgrade failure


I tried firmware upgrade for RAK7200 using the RUI_RAK7200_V3.1.0.9_release.bin file.
But the STM32CubeProgrammer tool showed “Error: Operation exceeds memory limits” popup after erasing flash memory.

It seems that firmware file size(196640 bytes) on your web site is greater than the flash size of STM32L073 MCU which is 192 Kbytes.

Can anyone help this issue ?

-rw-r–r-- 1 chyi chyi 196640 9월 30 18:14 RUI_RAK7200_V3.1.0.9_release.bin
-rw-rw-r-- 1 chyi chyi 87950 10월 2 16:20 RUI_RAK7200_V3.1.0.9_release.rar


You should be using “RAK LoRaButton Upgrade Tool V1.0” to upgrade the firmware. “STM32CubeProgrammer” is just for upgrading the boot loader. You need to issue the “at+set_config=device:boot” command before upgrading the firmware.


1 Like

Hi, Charlie ~

Thank you so much.
I solved this problem using "RAK LoRaButton Upgrade Tool V1.0” tool.

Best Regards,