[PROBLEM] Pi zero: New Install unresponsive after seconds

[willyside]

You may have missed the intent of Tim's post.

Just to check,  
Connect your Pi to your local network then, from a browser on another machine, use the address http://moode (or moode.local or IP_ADDRESS  where IP_ADDRESS is the address for your Pi)

hmm, guess I got it. But the PI Zero has no LAN interface and if the WLAN TCP/IP stack stops responding even to icmp a few seconds after boot  there is no chance to connect with http/layer 7. You also can't add hardware because the mersus hat is blocking all - I will buy some LAN hat if there is a zero available again and try that afterwards.

As an alternative to an Ethernet hat, how about a USB Ethernet adapter? You can get ones for less than $15 on Amazon that plug directly into the Zero’s micro USB otg port.