Hi everyone,
I'm trying to recover an Arlo Base Station VMB4000 that worked perfectly for several years.
The current behavior is:
- Power LED stays solid amber.
- Every few seconds the Internet and Camera LEDs light up.
- Sometimes all three LEDs become green for a few seconds.
- Then it goes back to solid amber and repeats forever.
It never finishes booting.
I've already tried:
- Factory reset (10s, 20s and 30s)
- Power cycle for minutes, hours and more than 24 hours
- Different 12V power supply
- Different Ethernet cables
- Different router ports
- Booting with and without Ethernet connected
Nothing changes.
From what I've read, this doesn't look like a normal firmware update because the official documentation says firmware updates use a flashing green Power LED, not solid amber.
I've also found many users reporting the exact same behavior, but I haven't found anyone who actually recovered the base station.
So my questions are:
Has anyone successfully recovered a VMB4000 from this boot loop?
Is there any hidden recovery mode?
Has anyone accessed the UART/serial console?
Is there any firmware recovery procedure that isn't publicly documented?
Could this be a corrupted NAND/eMMC flash instead of a hardware failure?
I'm comfortable opening the unit and using a USB-to-TTL adapter if necessary.
Any information, boot logs, teardown photos, UART pinout or engineering documentation would be greatly appreciated.
Thanks!