How do I change the IP address on Officejet Pro 8000 Wireless (A809n) and LaserJet P2055dn? Win7/10

[DadCat]

I have found many articles/posts that claim to have a solution, but so far none have worked.

Here's some background info...

I have Internet access using Comcast Business. I have been using 192.168.103/24 for my internal network.

But I recently changed my internal network address to 10.1.10/24 (because 10.1.10/24 is the default internal network of the  Comcast "modem", and each time they update their modem, it reverts to 10.1.10/24 for my internal network)

So... now my two HP printers are still using their old IP addresses (192.168.103.nnn). And obviously, I can't access them from my 10.1.10/24 network!

And since the IP address of these printers must be changed via some external means (ie, there's no "control panel" in the printer itself), how can I access the printer in order to make the change?    Obviously, the printers were designed with the assumption that you could configure them "over the network". But how do I do that, now that the printers and my computers are effectively on "different" networks????

[DadCat]

I found how to manually configure the P2055dn using the "front panel". Painful, but it now works.

But how do I manually configure the 8000 Wireless (A809n)?   It doesn't seem to have any display...