[Device Reviews and Information] oeriel:
OK, what I have done:

Rebooted to fastboot

In fastboot unlocked bootloader

formatted userdata

formatted cache

flashed recovery-vi7-v2 - the same you have sent me yesterday through TV

rebooted

Nothing changed, only system is new, factory reset.

OEM unlock I've done like this:

c:\adba>adb reboot fastboot

c:\adba>fastboot oem unlock
...
(bootloader) Unlocking the bootloader means the following:
(bootloader) All user data will be deleted
(bootloader) Any securely stored data will be inaccessible
(bootloader) Warranty will be void
(bootloader) After unlocking you have to execute
(bootloader) > fastboot format userdata
(bootloader) > fastboot format cache
(bootloader) or carry out a factory reset from recovery
(bootloader) To confirm the unlock, please execute the command
(bootloader) > fastboot oem unlock confirm
OKAY [ 0.050s]
finished. total time: 0.050s

c:\adba>fastboot oem unlock confirm
...
(bootloader) Unlocking and rebooting into unlocked state
OKAY [ 0.000s]
finished. total time: 0.000s

c:\adba>fastboot devices
0123456789012345 fastboot

c:\adba>fastboot format userdata
(bootloader) userdata partition type: ext4
erasing 'userdata'...
(bootloader) Erasing partition: userdata
OKAY [ 1.600s]
formatting 'userdata' partition...
(bootloader) userdata partition type: ext4
(bootloader) userdata partition size: 0x30700000
Creating filesystem with parameters:
Size: 812646400
Block size: 4096
Blocks per group: 32768
Inodes per group: 7088
Inode size: 256
Journal blocks: 3100
Label:
Blocks: 198400
Block groups: 7
Reserved block group size: 55
Created filesystem with 11/49616 inodes and 6446/198400 blocks
sending 'userdata' (14492 KB)...
(bootloader) Ready to receive: 0x00e27190 size of data
writing 'userdata'...
(bootloader) Flashing partition: userdata
(bootloader) Download Progress 20%
(bootloader) Download Progress 40%
(bootloader) Download Progress 60%
(bootloader) Download Progress 80%
OKAY [ 4.230s]
finished. total time: 5.850s

c:\adba>fastboot format cache
(bootloader) cache partition type: ext4
erasing 'cache'...
(bootloader) Erasing partition: cache
OKAY [ 0.230s]
formatting 'cache' partition...
(bootloader) cache partition type: ext4
(bootloader) cache partition size: 0x1a900000
Creating filesystem with parameters:
Size: 445644800
Block size: 4096
Blocks per group: 32768
Inodes per group: 6800
Inode size: 256
Journal blocks: 1700
Label:
Blocks: 108800
Block groups: 4
Reserved block group size: 31
Created filesystem with 11/27200 inodes and 3510/108800 blocks
sending 'cache' (8692 KB)...
(bootloader) Ready to receive: 0x0087d124 size of data
writing 'cache'...
(bootloader) Flashing partition: cache
(bootloader) Download Progress 20%
(bootloader) Download Progress 40%
(bootloader) Download Progress 60%
(bootloader) Download Progress 80%
OKAY [ 2.310s]
finished. total time: 2.540s

c:\adba>fastboot oem unlock confirm
...
FAILED (remote: Please run oem unlock first and read instructions)
finished. total time: 0.010s

c:\adba>fastboot flash recovery recovery-04-vi7ramdisk-recovery.img
(bootloader) recovery partition type: raw
target reported max download size of 1052770304 bytes
sending 'recovery' (11992 KB)...
(bootloader) Ready to receive: 0x00bb6000 size of data
OKAY [ 0.410s]
writing 'recovery'...
(bootloader) Flashing partition: recovery
OKAY [ 1.150s]
finished. total time: 1.570s

c:\adba>

All working (or not working) as before, so adb remount does nothing, adb shell gives error like it's not present - not such file or directory (in Android it works or either, it's seen).

What next - flash it unsecured boot? How to do it? Which app - FlashTool_E2 or something other like PhoneFlashToolLite_5.3.4.1 or else?

https://01.org/android-ia/downloads/intel-phone-flash-tool-lite