I'm not pretending anything, I only love your work and i think is a pety that iriver bootloader is no longer supported
Who says that the Iriver bootloader isn't supported anymore? Only the devs familiar with it not having time to work on it doesn't mean it's not supported. In fact, we do support installing the bootloader.
even if charging routine is not perfect, why not compiling a firmware for iriver with charging functionfor those who wants it?
Because the Iriver players (except the H10), in contrast to most other players,
can be bricked by installing a broken bootloader. Thus those bootloaders require
much more and much extensive testing before they can get released. A bricked h100 / h300 can only get revived using special hardware (and by physically opening it up), so even for most developers bricking such a player would be a problem.
And by the way,
no software project is
ever finished.