You warned about the possibility of errors in the firmware of the architecture, and I sincerely thanked you for it 
. But then you wrote that I was 100% wrong when I claimed that there was no working image for Vim3L. Gave me the link :). Where do you think I looked for ready-made images? :). Now show where among the images you have listed, is there an image for installing (or reinstalling) CoreElec on Vim3l? Why do I need an openwrt or ubuntu on a TV box (of course I can install it, but why?!? I try use Vim3L how TV box, if I dont use this device how TV box, when I only try use how network storage with openwrt or ubuntu) :). I could not install the working image of the android system. I took it from the site (there is one more image here, I also tried to clone it SC_VIM3L_ATV_FINAL-v1.0-20191023), it did not help either.
ok! No problem :)… thanks for trying 
Hello Friend! I dont understand what mean “MASKROM mode”, I tried TST mode (recommended): 3 clicks for 2 seconds (as per the manual) and the Power-LED (Blue) turns OFF. I also tried through successive presses of the shutdown and reboot buttons ( Keys Mode (U-Boot is Running Normally). They are not bootable android image :). This image android system is not ready for the basic installation (I clone image with Etcher and DD linux utility dd if=sdcard.img of=/dev/sdX bs=4M), most likely it is for updating or maybe not normal work U-Boot for Vim3L device. The seller answered me that he would prepare a normal image for recording on CoreElec. Maybe in a couple of months it will be possible to reinstall :).