Vontar X4 Booting problem. Boot logo loop

[callus]

Hi all.
I need some information howto continue with unbrick/unloop my tv box.
I am new with coreelec but I sucessfully install coreelec on 3 different
boxes and I use them with boot from internal emmc.

But I try install coreelec on Vontar X4 4GB RAM /64GB EMMC.
Boot from sd card with toothpick was good. I used
CoreELEC-Amlogic-ng.arm-21.0-Omega_nightly_20230716-Generic.img
with dtb containing somethink like xxx_S905X4_4G_1GB.
wifi does not working but it was not important for me and
i use ceemmc -x. this tool show me only options 3 and 4
and explain me that dual mode is not possible. I used option 3
and something was formating and everything seem good
and tool show me that everything was sucesfull.
But after reboot box is in logo loop and show me only Vontar logo
and black screen and again logo.
Even I try use toothpick method with working SD card.

Do you have any idea how I have to continue ?
At the moment I am dowloading Amlogic_USB_Burning_Tool_v3.2.0
and some firmware. But it is 1GB big file.
Thanks for help with next steps because It will be nice boot this box
from internal emmc memory. Thanks again.

[Alestilohomer]

Try to boot again from usb/sdcard and reinstall with ceemmc-x, sometimes it doesn’t work at the first time due to the partitions structure.

[Garcea]

Follow the instructions here: coreelec:ceemc [CoreELEC Wiki]
If you don’t have the original Android firmware for your box you should try some custom roms like ATV Experience or slimboxtv.

[callus]

Boot from sdcard doesn’t work. There is always vontar logo. But I get new Vontar X4 4G/32GB from my friend and I thing that problem is conected with cemmc instalation in single boot mode.
Can you explain me why again on this second tv box I don’t have dual boot option and only single boot option ? Here is screenshot from sdcard with
img : CoreELEC-Amlogic-ng.arm-20.2-Nexus-Generic.img.gz :
CoreELEC:~ # ceemmc

Starting CoreELEC eMMC installation tool…

System is not supported: sc2_s905x4_4g_1gbit!
CoreELEC:~ # ceemmc -x

Starting CoreELEC eMMC installation tool…

System is not supported: sc2_s905x4_4g_1gbit!

There is NO official support by Team CoreELEC
if you continue to run this tool!
Continue? [y]: y

eMMC size: 0x000747c00000 [32GB]

No CoreELEC installation found on eMMC

Install in single boot mode, only CoreELEC on eMMC
Use CoreELEC data from
[3] current used SD or USB device
[4] existing backup on current used SD or USB device

Install in dual boot mode not possible!

Please choose one option? [3/4]:

[callus]

I will follow you instruction and I will inform you about progress. And I will study about custom roms ATV and slimboxtv. Thanks.

[freddy]

You will never have Dual Boot

That is not an option with Amlogic S905X4
Currently.

Once you write to internal
You lose Android

Single OS only on internal CoreELEC

Reinsert SD card and make copy/send to external
With ceemmc tool.

Remove SD

Now flash latest Vontar image or custom slimBOXtv

OR boot CoreELEC from external
So can use both OS

[callus]

UnBrick solved. I used Amlogic Burning tool with downloaded Android image.
Thanks to everybody and thanks to explanation that dualboot is not posible
with S905X4 from internal emmc.

But I find out that problem what was hapend to me is only with 64GB internal emmc.
Because if I did the same steps with Vontar X4 device with intrnal 32GB emmc
everything was perfect. And this 32GB device is booting corectly single coreelec.

Do you thing that I have to report this information to ceemmc forum ?

[callus]

I have new infromation.

ceemmc not working correcly only with my box with 64GB internal emmc.
Because if I did the same steps with Vontar X4 device with intrnal 32GB emmc
everything was perfect. And this 32GB device is booting corectly single coreelec.

I tried both coreelec ng and ne version. And here is output from ceemmc tool
on 64GB device where everything seems good but after this instalation coreelec
doesn’t work. I tried this 3 times and always device was bricked in boot logo loop
and I have to unbrick device with burning tool and original android image.
Ouput from cemmc :
CoreELEC:~ # ceemmc -x

Starting CoreELEC eMMC installation tool…

System is not supported: sc2_s905x4_4g_1gbit!

There is NO official support by Team CoreELEC
if you continue to run this tool!
Continue? [y]: y

eMMC size: 0x000e8f800000 [64GB]

No CoreELEC installation found on eMMC

Install in single boot mode, only CoreELEC on eMMC
Use CoreELEC data from
[3] current used SD or USB device
[4] existing backup on current used SD or USB device

Install in dual boot mode not possible!

Please choose one option? [3/4]: 3

Free space of ‘partition CE_FLASH’: 512MB
Free space of ‘partition CE_STORAGE’: 56624MB

Used space of ‘/flash’: 243MB
Used space of ‘/storage’: 4MB

There is enough free space on eMMC for installation!

Install CoreELEC on eMMC.
Continue? [y]: y

Moving partition ‘logo’ from offset 0x000010600000, size 8MB to offset 0x000009e00000, please wait…
Moving partition ‘misc’ from offset 0x000011600000, size 2MB to offset 0x00000ae00000, please wait…
Moving partition ‘super’ from offset 0x00002c400000, size 2304MB to offset 0x00000b800000, please wait…

Starting to format the new ‘CE_STORAGE’ partition…
mke2fs 1.46.6 (1-Feb-2023)
Discarding device blocks: done
Creating filesystem with 14495744 4k blocks and 3629056 inodes
Filesystem UUID: 9d94153b-f89e-4d04-9045-e105ce68e7a4
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
4096000, 7962624, 11239424

Allocating group tables: done
Writing inode tables: done
Creating journal (65536 blocks): done
Writing superblocks and filesystem accounting information: done

Starting to format the new ‘CE_FLASH’ partition…
mkfs.fat 4.2 (2021-01-31)
Stopping Kodi before start of copy process!

Starting copying of data to the eMMC!
Please do NOT interrupt this progress till it’s finished!

Copy all data from ‘/flash’ to ‘/media/CE_FLASH’
243.07M 100% 23.20MB/s 0:00:09 (xfr#82, to-chk=0/85)

Synchronize data on disk with memory, please wait…
Copy all data from ‘/storage’ to ‘/media/CE_STORAGE/coreelec_storage’
4.80M 99% 10.26MB/s 0:00:00 (xfr#450, to-chk=0/879)

Synchronize data on disk with memory, please wait…
Start Kodi again to have a user interface!

Success!

You can now power off the device, remove the used boot media (SD or USB) and
power on again to boot the device from eMMC!

CoreELEC:~ #