@bincomIT 

Great point. A low profile USB stick (similar to wireless mouse USB dongle) plugged in and not really protruding out, is what I will be using henceforth and thus not dependent on customer maintaining backups (and in my case all cobtrollers are OC300). But I do find is that with cloud managed, remotely accessed controller, there is no option to manually backup. This option is only available when logged in thru a local computer. There is though option for auto backup, which, I should then be able to use.

And hopefully as you indicated configuration might remain intact, when 5.0.29 is uploaded using recovery process.

Thanks

@dpsguard 

I'm keeping my fingers crossed.

@bincomIT 

Thanks. This was the only site that I discovered that we did not have the device password or a backup kept with us. All other 7 sites I have this information collected and saved with me as I realized sometime ago that if we don't have device password and controller failed and needed to be replaced or is done a factory reset (which also  then changes device password) , and if backup did not work, then at least we can manually reconfigure and put the old device account back in and all devices will then join. Else we will then need to factory reset all devices as well.

@biomed32uk 

Update: I was able to get my OC200 upgraded after the previous failure/restore.  Not sure which part is important, but here's what worked: 

1. Log into the controller locally, via it's IP address
2. Do a manual Backup of your settings/data now (Settings -->Maintenance). You can't do this via Cloud access.
3. Turn Off cloud access to the controller.
4. Download the OC200/300 firmware manually. The OC200 global English site is here: https://www.tp-link.com/en/support/download/oc200/#Firmware
   (Note, the US site doesn't seem to have the latest firmware uploaded.)
5. Manually Upgrade the controller (Settings-->Maintenance) using the downloaded firmware
6. Wait. It takes +5 minutes.
7. Login locally and re-enable Cloud Access, if desired.
8. Note: After logging in, the controller re-adopted all of my devices. So network/internet may be affected during this process.

I'm now on 1.14.2 Build 20211215 Rel.61111

@supermarkert 

Good to know. But when you attempted recovery process, and uploaded firmware, not sure why you also needed to restore the configuration also from backup. The controller is supposed to keep the old configuration. I tested with an OC300 in lab and it retains the config.

@supermarkert 

Interesting, I tried that but not turning the cloud access off. If I have a bored hour this evening I'll have another shot at it. What devices do you have connected ?.

@dpsguard 

Not sure what to tell you. Possibly related to the failed upgrade. After I recovered it, no settings were retained, so I just restored by backup config.

@biomed32uk 

Just an ER605, a TL-SG2218, and two EAP245s.

@supermarkert 

That's a similar setup to me, two switches, a router and three eaps.

Tried what you did and it's exactly the same, downgrade and restore number three happening now,  going to leave it alone now until TPLINK come up with something definite. They have my config, wish you could sanitise configs to remove passwords, I've had to change all mine now everywhere.

supermarkert wrote

@bincomIT 

I believe automatic backup only works if OC200 is powered from POE, correct?

@supermarkert 
This is correct. (And a baffling/maddening limitation)