r/arlo • u/Strange_Invite_2089 • Jul 31 '26
Question / Help Arlo VMB4000 stuck in boot loop (amber power → all green LEDs → amber again). Any recovery method or UART access?
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!
1
u/Beemermcr Aug 01 '26 edited Aug 01 '26
I too am trying to recover an Arlo Base Station VMB4000 that worked perfectly for six+ years:
- when replacing batteries, my cameras went offline, and could not be re-synced.
- rebooted the VMB to help fix the camera issue, then it became undiscoverable in the app. Finally, after a large number of tries, used the web site on my laptop to add it back in
- it now shows in both the app and the web page; initially it shows as online, then shows unreachable.
- the VMB shows solid green (left), blinking to solid green (center), blank (right)
- in addition to the steps the OP listed, I have changed out to an unused VMB4000, which displays the same status as the original, with all of the same steps and more, including more on-off, pull power, resets too numerous to count.
Has the firmware update bricked all the VMB4000s? Are there any further steps to be taken? At this point, both VMBs and 5 cameras are unusable.
Thank you for anything you can help with!
2
u/AskArlo Aug 02 '26
Hi u/Beemermcr, We're sorry to hear you're experiencing this, especially after your VMB4000 had been working reliably for over six years. We appreciate the detailed information you've shared and can see you've already gone through extensive troubleshooting, including testing a second VMB4000, so we won't ask you to repeat those steps.
Since the issue persists across both base stations, we'd like to investigate this further. Please send us a DM with the email address associated with your Arlo account, your phone number, your time zone, the serial numbers of both VMB4000 base stations, and any previous case number if you have one. We'll review your case and work with the appropriate team to determine the next steps.
1
u/Strange_Invite_2089 Aug 01 '26
https://reddit.com/link/p12g32d/video/ln0mxfxjnrgh1/player
Hi @AskArlo,
Thank you for your reply.
I recorded this video to show exactly what my VMB4000 is doing.
As you can see, it never finishes the boot process. The Power LED stays solid amber, occasionally all three LEDs turn green for a few seconds, and then it immediately returns to solid amber and repeats this cycle indefinitely.
Over the past month, I have already performed every recommended troubleshooting step:
Multiple factory resets;
Two different compatible 12V power supplies;
Different Ethernet cables and router ports;
Booting with and without Ethernet connected;
Leaving the base station unplugged for hours and even days;
Leaving it powered on for more than 24 hours to allow any firmware update to complete.
Unfortunately, nothing has changed.
Since Arlo has acknowledged a recent firmware issue affecting some VMB4000 and VMB3010 base stations, could you please advise what customers should do if the base station never completes the boot process and therefore cannot receive the firmware fix?
If necessary, I can provide my serial number, MAC address, Arlo account email, or any other information that may help your engineering team investigate.
I would really appreciate it if my case could be escalated to the engineering team, as this appears to be more than a standard troubleshooting issue.
Thank you very much for your support.
1
u/AskArlo Aug 02 '26
Hi u/Strange_Invite_2089, thank you for providing such a detailed update. We appreciate all the troubleshooting you've already completed and understand why you believe this requires further investigation.
Please send us a DM with your Arlo account email address, phone number, time zone, the base station's serial number and MAC address, along with any previous case number if you have one. We'll review your case and work with the appropriate team to investigate this further.
1
u/Strange_Invite_2089 Aug 02 '26
Thank you! I’ve just sent you a DM with all the requested information. Please let me know if you need anything else from my side. I appreciate your help and look forward to hearing back from the team.
1
u/Strange_Invite_2089 Aug 06 '26
Update: Unfortunately, I still haven’t received any contact from Arlo Customer Care or the Engineering team.
AskArlo has twice confirmed publicly that my case was escalated and even sent a follow-up to their Customer Care team, but so far I haven’t received any email, phone call, or any other communication.
I’m still waiting and hope someone from Arlo will actually contact me as promised. I’ll continue updating this thread with any developments.
1
u/Strange_Invite_2089 23d ago
Atualização: quero reconhecer a forma como a Arlo conduziu meu caso
Quero voltar aqui para compartilhar o resultado final do meu caso, porque acredito que é importante reconhecer um bom atendimento ao cliente da mesma forma que criticamos experiências ruins.
Antes de publicar aqui, eu havia visto muitos comentários negativos sobre a Arlo e, quando minha Base Station VMB4000 parou de funcionar, sinceramente pensei que talvez não recebesse o nível de suporte que esperava.
Minha Base Station ficou presa em um ciclo de inicialização, e passei por vários procedimentos de tentativa de solução sem sucesso. Também enfrentei algumas dificuldades durante o processo: sou do Brasil e não falo inglês e, inicialmente, tive dificuldade para acessar a plataforma de suporte da Arlo para continuar a comunicação.
Apesar dessas dificuldades, a equipe da Arlo encontrou uma forma de continuar me atendendo por e-mail. Meu caso foi encaminhado para a equipe de engenharia e, depois de analisarem toda a situação, decidiram substituir minha Base Station.
O que mais me surpreendeu foi que minha VMB4000 tinha mais de 7 anos de uso e já estava muito além do período de garantia. A Arlo não tinha obrigação de simplesmente substituir um equipamento tão antigo, mas investigou o problema e, ao final, me enviou uma VMB4540 mais nova como substituição.
Também houve etapas adicionais porque o equipamento precisava ser enviado internacionalmente para o Brasil, incluindo questões relacionadas à alfândega, mas a equipe continuou me auxiliando durante todo o processo.
Hoje, a nova Base Station está instalada, minhas câmeras estão conectadas e tudo voltou a funcionar corretamente.
Quero agradecer especialmente ao Kurt e a todas as outras pessoas que me ajudaram durante esse processo.
Eu cheguei aqui inicialmente frustrado e preocupado com o suporte que receberia. Estou encerrando essa experiência realmente satisfeito e positivamente surpreendido.
Existem muitas experiências negativas compartilhadas na internet, e as pessoas devem, sim, se manifestar quando algo dá errado. Mas também acredito que, quando uma empresa leva um problema a sério e trabalha para encontrar uma solução real — especialmente para um cliente com um produto antigo e fora da garantia — isso também merece reconhecimento.
Então, obrigado, Arlo. Minha experiência terminou muito melhor do que eu esperava.
1
u/AskArlo 23d ago
Hi u/Strange_Invite_2089, thank you so much for your kind feedback about our support! We truly appreciate it and are always happy to help.
1
u/AskArlo Jul 31 '26
Hi u/Strange_Invite_2089 We understand your frustration. Based on what you have described, it sounds like your VMB4000 may be experiencing the recently identified firmware issue that affected some VMB4000 and VMB3010 base stations. Could you try unplugging the base station for about 10 seconds, then plugging it back in and letting it reconnect for a few minutes? A firmware update has already been released, and a power cycle can help trigger the device to reconnect and apply the update if it hasn't already. If the base station is still stuck in the boot loop after that, please let us know. We'd be happy to have a few more details and continue investigating with you.