iBasso DX90 Rockbox v3.15 issues

[peterz]

Hi -
I apologize if this isn’t the correct place to post this (if it’s not, please direct me to the right spot/person).

I recently acquired an iBasso DX90, primarily because it is a good player that can be Rockbox’d, though it’s not an officially a supported build.

I installed the patched bootloader and firmware (v2.5.1) that was on the site napych.com, as well as a patched version of Rockbox there from June 2015 (v46f8e0e - 150609).  It doesn’t say, but probably Rockbox 3.12
This works fine.
My problem: Since this Rockbox is several versions behind, and I thought there must be many improvements in the last 6 or 7 years, I installed the latest compiled build I could find for the iBasso DX90 (Dec 29, 2021) from the daily development builds site.  This breaks a few things:

1) the battery indicator always displays as if it were plugged into power, on any theme I use.  I can see the battery % as a number if the theme displays that, or on the status bar if shown.
2) Under Display-LCD options the “Backlight Exemptions” settings do not function.  They have been enabled, but that makes no difference (and they show as being enabled and selected in the .cfg file),  - pressing a (say) volume key still wakes up the touchscreen.
(Re-installing the old Rockbox version fixes these problems)

I could live with #1, since I can see a percentage if I choose, but #2 is an issue for me, since I need to be able to turn the screen off, put it in my pocket, and still adjust the volume or press pause (leaving the screen turned off).
This I can do with the originally installed older Rockbox version and it’s mods.

So -my questions (since I doubt any fixes are forthcoming shortly, though that would be wonderful)
1)  am I missing out on any important functionality by keeping with the much older version? I don’t care about plugins, lua scripting or anything but stability, power mgmt, sound quality & playback usability.
2)  •  Where can I find the originally released v3.15 (or 3.14) Rockbox for the iBasso DX90 that is already compiled/built (I do not have the facility or environment to do my own build)?
• Is there a v3.15 (or 3.14) of Rockbox for the iBasso DX90 that doesn’t have these issues? Where can I find it? I can only go back a month or so on the daily build site, and these problems are there as far back as I can go.  Do these problems exist even in the original release?
• Does anyone have a right functioning build (of any newer version) they can send me (and will you please)?

Thanks
peterz

[peterz]

Sorry - this isn't really appropriate here.
If someone can delete it, please do.