Wyse c10le with Citrix virtual apps and desktops 1912

Hello

I am new to Dell Thinclient devices...

I have one question. In our environment we have build new Citrix Virtual Apps and Desktops 1912 environment (Storefront is also on that version)

Our legacy environment is Citrix XenApp 6.5 where our clients has use Dell Wyse c10le devices to connect to.

Thinclients are on 7.1_122 version.
I have noticed that it won't connect to new storefront PNA site so I'm guessing that it is on old firmware version.

Can anybody tell me what is compatible firmware version for those devices in order to connect to Storefront 1912 and also, can somebody send me a link where I can see how I can upgrade single device to that new supported firmware version?

I'm thanking you in advance and most appreciate the help

 

Kindest regards

Micek