Theoretically, changing to “underclocked” should set it to stock. Stock is 1008Mhz. It should also set it to kernel 5.3.6 which is also stock.
Otherwise, using the stock os0.5 image, insert it into your computer. A drive called “boot” should appear. Copy the entire contents of this directory to your computer.
The DEOT image doesn’t mount the same way, due to how the header has been imported/stripped from the stock DEOT image to have the special boot screen.
While booted into the DEOT OS, ssh to the utility directory for the kernel and clockspeed switchers, and find the files that correspond to clockspeed and kernel; which should be 1008 and 5360 or something to that effect.
Rename them to 1008.bak and 5360.bak to have a backup of the files, then rename the files you got from the stock 0.5 card to the original names here. You’ll need to rename sunsomethingetx.dtb to 1008 and boot.img to 5360. Put them in the same directory as the DEOT utility’s files.
Sorry for the broad vagueness of this response - it’s just from memory, and a quick post before I go to work! There’s an easier way to do it, just mounting the boot directory, then su copying the files directly. In fact, that’s the way the switched script works. Open the script to find out.
I can be more specific if you want. But more importantly, I think @r043v might be bang on the money, and have a solution for those with the flickers. If it solves all the problems, then we won’t need to get down to why some boards are affected, and some aren’t. I still put it down to user build factors, but there’s no way of really knowing without holding a unit in my hands.
@Shwifty - you’ll need to know how to compile/cross compile your own kernel. It’s not that daunting a task, but does require a lot of fiddly files, and command line know how. If you go to @Joao_Manoel’s GitHub page for his kernel, you can see his excellent tutorial there.
On a side note, @r043v and @Joao_Manoel have images that are slim line, efficient and built for the user to build on top of, with what they want without any bloat.
The DEOT is the opposite of this, bloated like a beluga whale, but with all of the “hard to install” modification and UI fanciness that I’ve seen people have trouble with. Ie, for the beginner. I recommend that people check out the other two custom images, and consider them the way forward.