the wired connection is always better.
For live streams (e.g. IPTV), even a well-functioning wireless connection can sometimes cause random delays because multiple devices are connected to it at the same time, and this sometimes puts jitter into the signal. This will make the broadcast completely unenjoyable.
I have same experience. In my case mibox2s has not ethernet. Even wireless connection is so stable, IPTV get mosaic sometime.
The limiting factor is mainly the HDMI 1.4. So if a higher frequency came out of it, it might not be stable.
So far, I haven’t been able to figure out how to add custom resolutions because 3840x2160p isn't listed either.
3840x2160p isn't listed all the time. Connect box with my TV (samsung) , I can switch to 2160@24p.
But when connect to a monitor (lg 4k), I just got 1080@60p.
and accroding to s812 datasheet, it can not decoding H265 2160@50p. 
even with some outdated information from amlogic roadmap. Maybe HDMI 1.4 is a software limite, not from hardware.
also
I am learning to complie libreelec from your git, I noticed some code here.
switch(param->VIC)
{
case HDMI_480p60:
case HDMI_480p60_16x9:
set_vmode_clk(VMODE_480P);
break;
case HDMI_576p50:
case HDMI_576p50_16x9:
set_vmode_clk(VMODE_576P);
break;
case HDMI_480i60_16x9_rpt:
set_vmode_clk(VMODE_480I_RPT);
break;
case HDMI_480p60_16x9_rpt:
set_vmode_clk(VMODE_480P_RPT);
break;
case HDMI_576i50_16x9_rpt:
set_vmode_clk(VMODE_576I_RPT);
break;
case HDMI_576p50_16x9_rpt:
set_vmode_clk(VMODE_576P_RPT);
break;
case HDMI_480i60:
case HDMI_480i60_16x9:
set_vmode_clk(VMODE_480I);
break;
case HDMI_576i50:
case HDMI_576i50_16x9:
set_vmode_clk(VMODE_576I);
break;
case HDMI_1080p24://1080p24 support
set_vmode_clk(VMODE_1080P_24HZ);
break;
case HDMI_1080p30:
case HDMI_720p60:
case HDMI_720p50:
set_vmode_clk(VMODE_720P);
break;
case HDMI_1080i60:
case HDMI_1080i50:
set_vmode_clk(VMODE_1080I);
break;
case HDMI_1080p60:
case HDMI_1080p50:
set_vmode_clk(VMODE_1080P);
break;
case HDMI_4k2k_30:
case HDMI_4k2k_25:
case HDMI_4k2k_24:
case HDMI_4k2k_smpte_24:
set_vmode_clk(VMODE_4K2K_24HZ);
default:
break;
}hi, dtech
I find something interesting. As we all know, s812 can play no more than H265 4k@24p.
In my case, I can play H265 4k@50p, but hdmi maximum resloution is 4k@24p.
odd
I'll check it out, but I would ask you for a little patience, because an HDD from the RAID1 array died on my server yesterday.
Until it is replaced and re-synced, I don’t want to build a new image.
(It will still be an emergency intervention, mainly because of the virtual machines and I don’t want data loss.)
At the same time, I predict to everyone that http://http//libreelec.dtech.hu/ and my LE repo will not be available for a couple of hours on Saturday.
Thank you for you hard work, and your build make my box boot initial 
Don't mind me
Also I would try to replace bcm_firmware and nvram file from Android rom, will report if any progress I got
That's good, thank you. I noticed something...
The image for M8S+ uses a different nvram configuration (ap6335_nvram.txt) than datrh's X8-H Plus image (ap6335e_nvram.txt).
However, my X8-H Plus image statically loads "ap6335e_nvram.txt", so I don't really understand why it freezes.
I’d like upload ap6335e_nvram.txt late. Hope it will be hopeful
would you like check this
Unfortunately, startup events are now completely missing from this log.
The first line is this:
Code[ 665.570576@0] remote_send_key sleep:0Please send one immediately after start-up, before pressing any buttons on the remote control.
Okey, Try this dmesg.txt
I would also like a dmesg from the datrh version.
Okey, this dmesg from datrh version.dmesg.txt THX
Okay, but you linked a topic, not an image.
Sorry, here you go. Link
finally I got wifi working with datrh‘s LibreELEC 9.0 / Kodi 18.X for Minix X8,X8H,X8H+ .
Would you please take a look device config ? THX
Under Meson8, handling UHD resolution is not really properly resolved. I'll be honest, I didn’t really struggle with 4K either.
Since HDR10 is not supported by the SoC, I didn't see the excessive sense of dealing with it.
Unfortunately, I can't suggest anything for WiFi instability.
However, it is worth noting that the M8S+ and 3rdParty images use different broadcom drivers.
OK, I see. resolution switch maybe is not a issue. just a limit of the source 
But wifi stable is so important for the box, it has not a wired network.
Anyway thank you for your build, It make me boot le from the box.
a. What is the resolution and cadence of the video you are trying to play and what is the currently set resolution and frequency of the device?
Note that Kodi does not change the resolution downwards, so it will play 720p video at 1080p if the currently set resolution is 1920x1080.
However, playback will be cadence correct, so the frequency will be the same.
b. Can I request a dmesg?
thank you for your quick reply
a. I set le work at 1080@50p, and then I play a 4k@24p video. On the tv, input source is 1080@24p. Odd
b. dmesg.txt
Also, I tried different img
MXIII+ no wif
H8X+ random frozen after wifi connected (ap6335?)
Try to add manually supported resolutions:
just install to internal, manually switch resolution is work.
in this moment, I use m8s img with 2 issue,
a. when play a video, auto rate change work, but not resolution switch automatic
b. wifi connection unstable (ap6335)
How can I fix it? thank you so much
Okay, I hope it really works. I almost reacted to your previous answer, but in the meantime you modified it.
After 100 times test. It has most function work. But I can't switch resolution, no matter I change to 720p/1080p, TV still shows input source 1080@60hz
Do you have any idea? Thank you
BTW, my box has a special dtb with this
amhdmitx {
compatible = "amlogic,amhdmitx";
dev_name = "amhdmitx";
status = "ok";
vend-data = <0x26>;
pwr-ctrl = <0x27>;
vend_data {
vendor_name = "Xiaomi";
vendor_id = <0xacf7f3>;
product_desc = "M8 MBox SKTv1";
cec_osd_string = "MiBOX2";
linux,phandle = <0x26>;
phandle = <0x26>;
};
pwr_ctrl {
pwr_5v_on = "cpu\0GPIOY_16\0H"; #do not find anyother device use this
pwr_5v_off = "cpu\0GPIOY_16\0L";#do not find anyother device use this
pwr_3v3_on = [00];
pwr_3v3_off = [00];
pwr_hpll_vdd_on = [00];
pwr_hpll_vdd_off = [00];
linux,phandle = <0x27>;
phandle = <0x27>;
};
};Display MoreHi, I have a Xiao Mi Box 2s (S812,1G ram,4G rom),
I flashed MXiii plus(Tronsmart) firmware over it , because of the original bootloader can‘t be patched.
Now I can boot android 5.1 with modify dtb on the box.
After that I use libreelec for MXiii Plus (sd method), I got a black screen after Tronsmart logo.
It seem like bootloader has been patched, but hdmi couldn't work with wrong DTB.
Can I change dtb in kernel with mkbootimg_tools？
Btw, I have no more knowledge to make it work. Could anyone help me? THX
OK, mkbootimg_tools can make it work.
Hi, I have a Xiao Mi Box 2s (S812,1G ram,4G rom),
I flashed MXiii plus(Tronsmart) firmware over it , because of the original bootloader can‘t be patched.
Now I can boot android 5.1 with modify dtb on the box.
After that I use libreelec for MXiii Plus (sd method), I got a black screen after Tronsmart logo.
It seem like bootloader has been patched, but hdmi couldn't work with wrong DTB.
Can I change dtb in kernel with mkbootimg_tools？
Btw, I have no more knowledge to make it work. Could anyone help me? THX