RBcAPGi-5acD2nD upgrade to 7.xx.xx becomes brick

MaaxP · January 31, 2026, 6:14am

Hello, I recently purchased the RBcAPGi-5acD2nD with software version 6.49.18 (stable). When I upgrade it to 7.xx.xx, it opens normally and then almost immediately or within 2-3 minutes it bricks. I tried the latest version with netinstall, and it bricks again. I switched to 6.49.19 (long-term) and it is now running relatively stable.
The rest of my equipment is an RB4011iGs+ central router and 2x CRS326-24G-2S+ switches, for WiFi, I also have 2 RBcAPL-2nDs, 1 cAP XL ac, and 1 RBcAPGi-5acD2nD.
All of them run on software version 7.20.6 except for the RBcAPGi-5acD2nD.
Does anyone else have a problem with this particular RBcAPGi-5acD2nD model, or know how to fix this problem?

erlinden · January 31, 2026, 9:14am

What firmware version is the cAP ac running?
And what wireless package does it use (either wireless or wifi-qcom-ac)?
What does brick mean?
What does the logging say?

itimo01 · January 31, 2026, 10:24am

No not really

What do you mean by this?
Maybe the storage is all used up?

MaaxP · January 31, 2026, 10:25am

The firmware currently running is 6.49.19 (long-term).
Wireless (CapsMan management from my central router RB4011iGs+).
Brick = I lose access to the RBcAPGi-5acD2nD because it loses its firmware and I can only see it with Netinstall.
log? How can I see the log since I lose it after the upgrade and can only see it again by reloading the firmware via Netinstall?

MaaxP · January 31, 2026, 10:36am

Brick = I lose access to the RBcAPGi-5acD2nD because it loses its firmware and I can only see it with Netinstall.

erlinden · January 31, 2026, 11:56am

Why do you think it is loosing it's firmware?
Any LED's emitting light?
Does a power of and on help?

Please provide all information available.

Can you share the output of:

/system/routerboard/print

MaaxP · January 31, 2026, 1:55pm

Well, I tried again today to update, and it worked fine!!!

I don't understand what was wrong, the only thing I noticed was that it took longer to restart.

I tried, not once, but 3-4 times, was that after the upgrade it restarted, when opened the LED indicators power and E1 (ethernet 1), I couldn't see it on my network, Winbox couldn't see it, I couldn't see the web interface, the wifi wasn't working either, I could only see it with Netinstall and it only accepted update version 6.49.19, any newer version I tried opened in the same state (power/E1).

holvoetn · January 31, 2026, 2:25pm

Is that device simply hanging from ethernet cable ?

PS personally I prefer square case on that device.