I’ve got a Boron BRN404X that fails firmware update when it reaches the bootloader stage. It updates softdevice and system part1, but then when it resets to flash the bootloader, it fails after a timeout. The light stays magenta for about 50 seconds, then off for 30 seconds, then back on for 50 seconds. Other times, there has been some variation in the magenta blink pattern.
I had it successfully flash once, but I have not had repeated success. I’ve tried several USB cables with no effect. I have another Boron that operates correctly.
I've tried the 5.x.x versions as well, and they won't update either.
Any other steps I could try?
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Similar issue: Failed Boron Firmware Upgrade
Verify you are using the latest versions of the CLI
- Verified: v3.17.3
- No effect
Bypass USB hub/extensions
- no hub used
Check your USB Cable
- several cables tried; same result
- I have another Boron where firmware update works fine every time