crwdns2934241:0crwdne2934241:0 Cromson

crwdns2934249:0crwdne2934249:0:

Try holding the SHIFT key when you click the restore button. (or the command key if you are on mac) This will allow you to select a custom firmware.

they are available for the iPod touch 1 here: https://ipsw.me/iPod1,1

the top one should work for you

crwdns2915684:0crwdne2915684:0:

open