I have deleted files from the hard-drive of one of my three black Ponos without a problem using just Micro SD cards. My original Kickstarter had many files installed early on before the excruciatingly slow file transfer issue surfaced. It still plays those files without issues. It also tolerates large capacity mSD cards with no issues. I will not try to delete files from, or add files to, its hard-drive. I’ll leave well enough alone.
A yellow player “died” when I foolishly attempted to force feed files to its hard-drive. Now it jumps in and out of “Scanning Music Library” but will not boot up to play files. Perhaps someday I’ll see a post on the Internet that allows me to resurrect it. Until then, it’s a parts car.
I just got a NIB black player from eBay for under $200.00. It arrived yesterday in its wooden box inside sealed original packaging. While I intend to set it aside as a spare, I did charge it up to confirm operation. It came with Neil Young’s There’s A World loaded on the hard-drive. Who ever decided that was a good demo song? Anyway, it played. It’s my recollection that my original player came with a 64g removable mSD card, this unit did not. The player quickly scanned the music library of a 128 card and played that as well. I plan to leave the newest player’s hard-drive alone. I also do not plan to update the firmware. I need this thing to work in the future to be able to continue to feed balanced outputs to my balanced class-D chip amps (main and subs) if my other two players fail. Pono acts as my pre-amp, as well as DAC and DAP.
At 71, I’m done chasing unicorns, now I just want to listen to and enjoy the music, not the hardware. Balanced Pono players and Class-D chip amps into horn loaded speakers and four tapped horn subs are the end of my audio journey.