Firmware upgrade to 007P0 does not help. CoreELEC 9.2.2 update to nightly_20200530 does not help.
Only USB3 port is working, USB2 is not.
Upgrade to CoreELEC 9.2.3 still does not help. 
One of you guys might have to upload the Android dtb on the latest firmware.
No getting excited but it wont hurt for a Dev to look at it if someone can supply it.
I did not find any file with dtb extension or with the name dtb.img on the device. Would you be so kind and tell me a little bit more about where can I find this dtb? Thanks.
You can download the whole image from the link in my previous post.
Use “Search” icon or if that is a to big task look at this topic
Not sure if it’s related but of the original GT1 Mini line there are several different ones, I have Amlogic S905X2 and that uses firmwares for (SN: 95X2). Then you have Beelink GT1 mini② boxes, that I believe so far just the initial release.
Nothing in the latest firmware that’s noted, relating to USB changes, improvements. However It shouldn’t be since under Android both USB ports are functional with GT1 Mini initial line, for mine with SN: 95X2.
No update on this issue? Will this be remain unresolved forever? Just say if it does, because if none of the devs are addressing any attention to it, than we wouldn’t wait hopelessly till eternity… Thanks.
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Yesterday I installed on Beelink GT1 mini 2/32 gb Kodi RC1 (clean install, android 9). Port usb 2 works.
I updated today Coreelec 19 Matrix at last nightly, port usb 2 not works. you can fix the error?
I use g12a_s905x2_2g_1gbit.dtb from Generic. Thanks.
Please make a dtb dump by this cmd:
dd if=/dev/dtb | gzip > /storage/downloads/dtb.img.gz
Than attach this dtb.img.gz please, thx
Please instructions? How to do it?
By a SSH connection. The download folder should be visible on Samba share. Please use the the forum search about how to make a dtb dump, thx.
Latest 9.2 nightly - usb 2 not works.
dtb.img.gz (219.6 KB)
Did USB2.0 work before with CoreELEC?
Like with 9.2? Or only in Android?
Can you please try this dtb? Replace you dtb.img by this one:
g12a_s905x2_2g_1gbit.dtb (66.5 KB)
I tried coreelec before (version I do not know ) - usb 2 not working. On android (8.1 and 9) no problem.
Now i use last 9.2 nightly + your file - usb2 not working
Can you somehow measure the 5V on the USB port?
Or you have any USB device with LED what will show if the port do have power? If yes please tell me exactly when it do have power. Right after DC power in and also after booting?
@pepek33 or try to charge your phone or any other USB chargeable device on the port that doesn’t appear to work. All we need to know is if the port receives power or not. Thank you.
@pepek33 I moved the posts about the issue out in here.
Can you please test if there is power on the USB ports? If yes the usb chip maybe needs a reset.
No one of the team or tester have such device and we have no information about what’s is missing.