as far I know, the only way you could do it, is with rockbox, but this device doesn't have it.

I only recently found this thread , and wanted to write that the xduoo x3ii is an incredible dap , far cry better than the original X3 , and I'm very happy with this purchase. Sadly rockbox is still somewhat not complete , it works perfectly but some applications are not running properly or...

Exactly , this is the only case scenario DSD has a chance , but nobody except studios that are devoted to it master from vinyl , everything Is DDD today.

DSD is pointless , not only you can't edit it, you can't even play it without a proper equipment , higher than 16/44 gains no better quality , what is important , is the mastering of the digital track. I can't understand why people use 96khz , 24 bit has a better noise floor but it is still not...

this device is truly amazing, small like the sansa yet 4x times powerful and better. Truly a great product , I wanted to buy the M3K but then I found this :) .

2.0 is the latest version for fiio x3ii and the last one as well 

here are images of the device , maybe it will help you   https://www.rockbox.org/wiki/FiioX3Gen2

I resample most of my songs to 16/44.1 , sounds the same to be honest , I checked using Dr score plugin for foobar2000 and it is indeed the same only ~0.01 difference in the dynamic range

       Thank you guys for the help I'll try that 

Beautiful Dap :)

    I have sandisk ultra 128 fat 32 , 4 kib cluster , I know how to update it just shows me version too low , It came on version 1.6 when I got it.

 I tried downgrading from the latest version and 1.6 and the beta 1.44 and still same issue 

How can you downgrade to version 1.4?    To me it says version too old?    I tried the beta version above the version 1.4 and it did work but below it nope.     What can I do?    Thanks

 got it from ebay :) 

 cool case , I don't like those flip cases , thanks anyways. 

 what case is this? I have now the digins case.

 had the same issue , got a refund and got a better player lol

I honestly don't know , i bought mine and it has problems like audio cutting and the battery was bad , i really don't know.

just buy any battery that can fit the xduoo and cut the cables of the original battery and attach them in the new battery.

also the xduoo has a very poor display , one color oled display , while the fiio has a full tft 320x240 display 

I didn't say that in that context , I only referred that the xduoo x3 is bad , also the device itself has issues with heat many people said that in the thread. 

Just buy the fiio x3ii , it is worth the money , the xduoo is **** , I got a defected unit lol.

 you should use cue tools as it is better medieval also encodes the file again so the md5 file changes and cue tools also verifies the files exactly , although there is a big letdown  as it cannot process more than red book standard 44.1khz /16 bit , I always resample as 24  bit and higher than...

 imo , I still prefer the x3ii from fiio , I got my refund from ebay because the xduoo x3 was defected  ,but the audio quality is a bit better on the fiio , also it has usb dac option which is already a big plus and battery life is not bad at all , I never even managed to drain it fully :)  , i...

Yea the eq settings are pretty dull , but the player itself is a solid choice , I bought it after having issues with xduoo x3 , I'm mroe than happy as it can even supports usb dac and the sound output in mw is pretty darn good