I’ve tried both versions of CoreELEC and I keep seeing a black screen no matter what I do.
I’ve copid the gxm_q201_3g.dtb file from device_trees/ to the root directory and renamed it dtb.img.
I’ve then flashed the SD card using Etcher.
When using the command md5sum to check the MD5 checksum of both files (after mounting the *.img file) then I can see its the same hash.
Then I’ve tried to switch on the TV box with the SD card inside it:
I’ve tried to keep hitting the menu button of the remote controller (to see the Android recovery menu) and tried to boot again the TV box choosing this option from the Android recovery menu.
1.1 The box boots up again with the usual blue light (some other times the red light) and I see a black screen forever.
I’opened the TV box plastic cover with a screw driver, then I’ve short-circuited the 2 pins at the bottom-right corner.
2.1 The box boots up again with the usual blue light (some other times the red light) and I see a black screen forever.
Slight warning sign: when mount-ing the SD card (after I’ve flashed it and used it on the TV box) I don’t see the same MD5 hash anymore.
What am I doing wrong?
Is there a way to check some logs somewhere e.g.:
using SSH to log into the TV box (I can not find the credentials username and password) for a vanilla installation of CoreELEC
checking some logs in the recovery mode menu (I am not sure what to look for in there)
It seems to me I am doing something wrong because I see the same effect no matter the version of CoreELEC I am using or the procedure I am following.
I’ve tried these 2 different approaches because I’ve seen people mentioning these version issues and short-circuiting issues on various posts on this forum and similar blog posts on the internet. So far no luck
Also, on a different note: I was hoping to see some Markdown documentation on Github or perhaps a wiki here on the CoreELEC site, but there does not seem to be one. I could try to document the right procedure assuming I find it.
You should FIRSTLY flash the image using etcher.
Then navigate to the device trees folder in the flashed sd card.
Choose the correct device tree for your box and copy it to the root directory of the sd card renaming it to dtb.img.
What is this list under devices? Do you mean the files contained in the directory device_trees/?
I’ve deleted that dtb.img file I previously copied from device_trees/, so the SD card is now as the original one from Etcher, then I’ve booted the TV box again.
I always see that black screen with the word “MECOOL” no matter if I:
hit the menu button from the remote controller (tried for a couple of minutes)
short-circuit those 2 pins at the bottom-right corner
I am quite confused as I don’t understand what’s wrong.
I really can’t understand the problem. You have to rename the correct dtb to dtb.img. Even if the device is listed in downloads that’s only a helper to inform you of the correct device tree.
So do things in order. Burn the image to SD card, copy the correct device tree to the root of the card and rename it to dtb.img.
For general information only devices with a exclusive image (N2, for example) don’t need to copy and rename the device tree.
The first one? Please burn the image into an SD card, open the folder in the root of the card with the device trees, copy the correct one to the root of the card and rename it to dtb.img. That’s the standard approach. You’ve said that you copied the dtb first and then flashed the card or something.