The 4:2:2 channels I tried just gave a black screen.
I haven't tried rooting it. It comes with a 'Developer Tools' app. Most of the options in it are to display various information screens.
It might not even need to be rooted, I bet it's open already. Looking at that remote app, it states for Hi37XX, I may try it on the 3712 here and see if it works.
Does it move a dish with DISEqC all right, or is it the same deal as with USALS?
The remote app is open source and it does connect with the 3712, may be workable.
Hey, Brett, I was just looking at firmware for that receiver and I see one with a date of 2/17/2016 that list fixes for 4K. What's the date on your firmware?
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-------------- 20160217 --------------
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Full version
Keep DB version
Fixed Issue
1. On 4K resolution mode, problem to decode Video on Specific channels.
2. On 4K resolution mode, Breaking issue of captured screen.
3. Audio Passthrough problem.
4. Endless playing when you play some of SRT subtitle on File manager.
5. Unmute problem when we use EPG menu from mute mode.
6. Mixed Audio issue after using some IPTV/KODI/Youtube App..
7. Google TV log in issue after upgrading new firmware.
8. Network Firmware upgrade feature.
9. Current focused channel issue after deleting channel on channel list.
10. After watching TV via KODI, and exit, then show "adapter in use an…." message.
Fixed PVR Issue
1. File size issue(Max 4GB) on NAS File recording.
2. File name issue(Max 4GB) on FAT32 File system : ts.00 ==> 00.ts.
3. EPG Recording failure issue over 23:00 ~ 01:00 at Midnight.
4. Time-shift Buffer size setting failure.
5. Reset issue default PVR device setting after power Off/ON.
7. Fixed many issue for CAS channel recording.
8. Recording failure issue when storage has not enough space.
Added Functions
1. Added IPTV Menu.
2. Added left/Right sound selection menu.
3. 7 Seg display for Resolution changing
4. Adde MUX/TS stream Capture on Storage.
5. Recall function with <== key.
6. Transparency option for channel list/Info bar/detail info window
7. EPG progress board on INFO Bar.
HItvRemote.
1. Added LCN setting menu.
2. Support German language.
3. Support more Android Devices like Galaxy Tabs4.
Support Channel Editor on PC.
I took out the links to the actual firmware because I don't know how legit the site is, but I can email it to you if it's newer firmware than yours.