hi, i just got a used H7600 (very excited!) but it has system 5.1 in it.
i will update to 5.22 after i get all the appropriate PCMCIA adapters and such.. and i see 5.22 has some new algos..
i assume there was a 5.2 before 5.22? if so, is there a changelog anywhere from all the upgrades since 5.1