---------- Post added at 11:14 PM ---------- Previous post was at 11:09 PM ----------
Let's try this... The more people the better!!
and also you can add that they are BREAKING the Android license regarding verified boot (which imposes the continued boot at users choice with a warning on a failed check and NOT a locked boot process), maybe a google recipient in CC is in order
---------- Post added at 11:17 PM ---------- Previous post was at 11:14 PM ----------
Until we can get a bootloader unlock, this seems the best route to take for the moment. I've used Linux Deploy for years now and with the new integration it should work even better..
LD Blog -
http://meefik.ru/blog/2015/09/14/linuxdeploy-android/
you can't boot anything but original Lenovo kernel+initramfs, the loader checks for OEM(Lenovo) valid signed hash of the booting image and it will lock if not valid. all the eventual modification/subverting must be done AFTER the Lenovo's original kernel is loaded(sadly, so no linux first). even if one could somehow trick the system into booting from usb/sd card, whatever it will install, a new custom loader or kernel, the next boot will be locked out as the signature of the new files will not exist (or not be valid). the usb otg interface is disabled until kernel is loaded (tried with flash drive, and self powered keyboard). i don't even know why lenovo gives the uefi shell with no way of keyboarding when he cannot find a valid efi loader... seems they are mocking us. if you want to install you can (having root) put whatever you want on the existing partitions (why people think that if the install something "booting from bios" the next boot will not be checked?) but again... useless... as they will get checked (first the loader, then the boot)
btw. do not try to write windows version of the bios on an android tablet if you don;t have a flash programmer, NOTHING will unbrick your tablet until you reflash the bios on a hardware level.