Hi,
please, is any support for MeCool K7?
There is general support for S905X2 boxes.
so everything including Bluetooth, tuners, lan 1gb, WiFi, sd card, … should work?
No. Some box use exotic chips which has no driver.
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Will CE 9.2.1 have support for: DVB-S, WiFi AC, USB 3 and Ethernet? Is someone testing?
Hi, i have Mecool K7 and tested CE9.2.1, LAN OK.
Tuners DVB-S2, DVB-T2 and DVB-C, wifi, USB3, bluetooth not work. 
I hope for update drivers.
Please update drivers for this device.
Sorry how do you expect us to do this without giving us any information?
What information you need and how I can help with testing?
I have extracted from the IMG firmware file Mecool K7, the DTBs. You have them here
https://mega.nz/#F!KVQUyKRQ!oe17NS5iLodWJog6cEvGEg
If you have a Mecool K7 with 4GB of RAM, try downloading the g12a_u212_4g.dtb file, rename it as dtb.img and copy it to the root of the COREELEC partition of your flash memory.
If you have a Mecool K7 with 2GB of RAM, try downloading the g12a_u212_2g.dtb file, rename it as dtb.img and copy it to the root of the COREELEC partition of your flash memory.
Additionally you also have the DTS files ready to compile.
I don’t have Mecool K7 and I can’t try this. Maybe it works.
Thanks, i try g12a_u212_4g.dtb file, but box not boot.
I have updated g12a_u212_4g.dtb, I think it will work now. Download it again.
Not boot again.
With g12a_s905x2_4g_1gbit.dtb, boot ok, but without wifi, tuners …
Again absolutely no help to us, you haven’t told us what wifi chipset you have or what tuners are in this device.
Paste output of udevadm info /sys/bus/sdio/devices/sdio*
##############################################
CoreELEC
https://coreelec.org
##############################################
CoreELEC (official): 9.2.1 (Amlogic-ng.arm)
CoreELEC:~ # udevadm info /sys/bus/sdio/devices/sdio*
P: /devices/platform/ffe05000.sd2/mmc_host/sdio/sdio:0001/sdio:0001:1
L: 0
E: DEVPATH=/devices/platform/ffe05000.sd2/mmc_host/sdio/sdio:0001/sdio:0001:1
E: SDIO_CLASS=00
E: SDIO_ID=037A:7608
E: MODALIAS=sdio:c00v037Ad7608
E: SUBSYSTEM=sdio
P: /devices/platform/ffe05000.sd2/mmc_host/sdio/sdio:0001/sdio:0001:2
L: 0
E: DEVPATH=/devices/platform/ffe05000.sd2/mmc_host/sdio/sdio:0001/sdio:0001:2
E: SDIO_CLASS=00
E: SDIO_ID=037A:7668
E: MODALIAS=sdio:c00v037Ad7668
E: SUBSYSTEM=sdio
Your device has a Mediatek mt7668 WiFi/BT chipset which we don’t have a driver in our builds for yet, one is available but it’s not been tested.
The tuner will probably need a new device tree so the system can see the tuner and that is if it’s supported as we still don’t know what tuner you have, nobody on our team has this device.
I’ve also ordered that box and there is no way to help you to get tuners working on CE?
If it has the same avl6862 tuner that older MeCool devices had then it will just be a device tree issue if it has a different tuner then there is very little chance of gaining support.
I think the tuner is the same as in K1Plus, but the newer revision, my chip in K7 is AVL6862.
Photo is K7.
that Tuner looks like a newer revision of this https://www.cnx-software.com/2016/01/08/specs-unboxing-and-teardown-of-ki-plus-android-tv-box-with-dvb-t2s2-combo-tuner/
Any real chance to get tuner working in CE?