is it FULL Hardware compatible with the Pronto NEO (~ Marantz is OEM ?)
mostly, there are some minor differences, like the Neo has a universal IR database (called UDB) while the Marantz has more hard buttons. Philips is the OEM
can it leran difficult codes like from Pioneer Devices or RF Devices
don't know about Pioneer, but it cannot do RRF, no learning remote can do that
NeoHack, what is it ?
it is software developed by user(s) to add some capabilities to these remotes.
Can it convert Files from Pronto Edit and Convert the Codes for the Pronto ?
it cannot convert files (i.e. images and stuff) it can only convert Pronto IR codes