It's of limited help, but I haven't used the FiiO app in years (it struggled with my big library on my 400GB and 512GB cards) - I bought NeutronMP. You might try the FiiO forum? https://forum.fiio.com/note/showNoteContent.do?id=202105071626425774349&tid=17

15 months ago (approx) I replaced my FiiO x5iii with an identical sized 3rd party battery, but that appeared to start to bulge after about 12 months. So, in a fit of frustration/panic, I found an old small 700mAh that I had lying around and fitted that (with both limiters from the original FiiO...

Thanks for the teardown, it made life a little less stressful when I did mine (finished about 15 minutes ago). After discharging the X5 as much as possible (first in the OS and then sat at the bootloader) I decided to repeatedly stress/bend the old tags until they broke (it's only soft metal)...

Going to try this right now as I almost exclusivley use the NeutronMP. TBH I'm happy with the speed but a little less power consumption would be good. BTW I did notice that repeatedly tapping on one option looks like it will lead to the disabling/uninstall of the Google Services, though I have...

Sadly I have to say that after another scary 'you could cook an egg on this' moment last week (that makes three very worrying moments now over different incarnations of this improved kernel) I have gone back to the stock kernel (without any problems so far). Maybe it's my X5, but when it simply...

@jkbuha A bit of positive feedback: my X5iii has been running noticeably better since my last post and I even got the confidence to redo the process and raise it up to the middle speed (1752MHz wasn't it?) and all is good so far with only 1 freeze that was probably an app playing up. The one...

Just a quick reply to say that your exFat suggestion has sorted my external_SD1 issue - many thanks :smile_phones:

Thanks for the feedback - I feel a bit more confident now :-)

I've just discovered this post in this thread and it's the same fault that I'd noticed twice before whilst trying out two earlier kernel versions (here's the first time I encountered it...

Thanks for the explanation. And having seen the reply from @Bray90820, I think I may have to create a bit of time and give it another go.

And calling out the point that was made previously (when I was running a 3.3.x build) from the Fiio site @ https://www.fiio.com/x5iii "2 Modes of Charging to Quickly Get Back Up and Running The X5 3rd gen contains a 3.8V 3400mAh battery that provides more than 10 hours of playing time. But...

Interesting - I'll look into that (though as it takes a fair while to re-copy 12,000 songs across to the smaller of the two cards I'll wait a while before I try it). Though thinking about it, are you suggesting that the FAT32 format might not be recognized in general in external_sd1 by the new...

Tried number 1 but there's no way I'm spending anymore time on steps 2 or 3 when earlier versions (3.3.2, 3.31 and 3.1) never displayed this problem - sorry, I just don't have that sort of time. Both cards were Fat32 and were formatted by the SD Association SD card formatter. And just to...

Sounds a lot (exactly the same perhaps) as my external_sd1 issue with 3.4.1 (further up the page). I even went as far as popping the card into sd1 after it had booted and settled down, and got the same freeze-up (it was fine trying this unorthadox approach in sd2, with files being happily read)...

Thanks - I might give it a go again.