EAP225 Outdoor V3 cliclientd invalid command!

I have the same issue with 2 EAP225 V3 and to me it looks like the firmware changes from TP-link disabled the possibility to change to OpenWRT. The shell also shows a typo in the welcome message - YOU ARE USING EAP CLI SYETEM

One can enable a so called advanced permission mode using the enable command but still the available commands are very limited.

I could not figure out a way to elevate the rights further.

Does anyone now if TP-Link closed this on larger scale for their devices after certain version upgrades?

is that really SSH ?

Thats what i get logging in with:

ssh -o PubkeyAcceptedAlgorithms=+ssh-rsa -o HostKeyAlgorithms=ecdsa-sha2-nistp521 -o KexAlgorithms=+diffie-hellman-group1-sha1 admin@192.168.1.144

it is the CLI interface but not as it used to be with earlier versions.

What firmware version are you on ?

5.2.3 - I bought them used...
The TP-link web page also says that one cant go back to an older Firmware version since 5.2.2, so I guess they changed something since 5.2.2