Help me to Identify what pins to short (amlogic tv box) - Android Stick & Console Computers General

I have an amlogic tv box that i want to revive. Its a generic chinese box.
With a lot of help of the community i managed ti identify the board, Is the one from this link:
https://www.szjytx.com/?id=13299
The one from the link (as you can see by the photos i posted) is the same one physically. The only thing i couldn't identify was the real processor (the manufacturer was faking it), because when i removed the heat ink, the painting on the chip got erased.
So i started to experiment with it.
I couldn't find any ROM for the processor that that chinese page says (S905L-B)
After various tries , I could install twrp (for the s905w processor)
The first working one was one for the "x96 mini", it worked but it only showed 1/4 of the total screen.
Then i tried one for the tanix tx3 mini, and it worked like charm, i could backup and restore roms.
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After that introduction, here's the problem:
The box has no reset button, so the only roms i could try were from twrp update zips.
So, as i did with the recovery, i tested first installing a "x96 mini" rom, and i had the same result, a bootable rom showing 1/4 of the screen.
The next was to try a "tanix tx3 mini" rom, and after the flash it never booted again (not even the logo), so i think is bricked at bootloader level. Te power led powers on, but no image.
I think my only hope to revive it is to flash a rom trough the amlogic burn tool.
The problem is that the device can't be recognized by the tool.
i only had partial luck /really strange behavior) with a malfunctioning usb male to male cable, testing it sometimes it got recognized for a few seconds (of course i couldn't install any rom with that little gap).
With a brand new male to male usb cable it gets nothing.
This new cable works, because the power led of the device turns on, but it doesn't get recognized by windows or the tool.
I know that there's a method to force the box to go to download mode, by shorting two pins, but i cant tell what pins are the correct ones, o some hint to it.
I attached pictures form both sides of the board.
https://imgur.com/a/EBYsTYk
Thanks in advance

I am having the same problem. Did you solve the problem?

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Sent from my SPH-D700 using XDA App
Progress?
Darkpoe, have you had any progress with your setup? I have the genbook and have been stuck without any luck. Could you maybe post some pictures of your setup?
darkpoe said:
I've gotten the genbook 108 into Download mode by opening it up and holding down the s1 button next to the cpu board inside this unit. With the correct cable and drivers I can see the unit now inside windows.
Click to expand...
Click to collapse
I drilled a hole in the bottom of my unit to expose S1 but I can't figure out how long to hold it down for. Hints?
When you say "Correct Cable" you mean an A-A USB cable?
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Hello, I have a problem with my MK809IV stick. It seems to be a hardware problem or a feature of my device, maybe you can help me. I can't flash any rom to my stick, because when I plug it in my PC, I have a message "USB device not recognized". I tried different methods, such as pressing Reset key or making contact between 8 and 9 pads of NAND - no result. At first case I can see an Android picture on the screen (sure, if I connect it to TV), at second case nothing really happens: even CPU stay cold, no picture on sreen.
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Same here
Ancharas said:
Hello, I have a problem with my MK809IV stick. It seems to be a hardware problem or a feature of my device, maybe you can help me. I can't flash any rom to my stick, because when I plug it in my PC, I have a message "USB device not recognized". I tried different methods, such as pressing Reset key or making contact between 8 and 9 pads of NAND - no result. At first case I can see an Android picture on the screen (sure, if I connect it to TV), at second case nothing really happens: even CPU stay cold, no picture on sreen.
As I know, it's a problem of devices (not only MK809IV), which have PCB, marked CYX_809III V5_0 20140510.
Please, help. My device works bad, there is a low FPS in films, and I can't flash any ROM. I spent a lot of hours trying different methods and searching for information.
Click to expand...
Click to collapse
I have the same device, having the same issues, and i have tried almost all what you have done so far. Really looking forward, if some one could help with this. I want to install linux on this tv stick.
Look at this thread:
w w w.freaktab.com/showthread.php?15752-CYX_809III-V5_0-20140510-%28CX-919-MK809IV-clone%29-not-connecting-to-PC-as-USB-device-for-flashing-rooting
It is almost the same device (same PCB, but sell as a "CX919"). We are able to boot on linux with an sd-card, but (up to now) I cannot make the wifi works (it is a uncommon wifi module: ESP8089).

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