[Device Reviews and Information] oeriel:
OK, I have a problem some time ago with Android TV Box on my Windows 8.1. This OS didn't see it properly, so I connected it to my Windows 7 PC. Then, all was OK. I've flashed and now it's working. So going to Teclast X70R:

I connected it to Windows 7 PC, and... Flashing recovery was ok. Below is a whole process:

c:\adba>adb devices
adb server is out of date. killing...
* daemon started successfully *
List of devices attached
0123456789012345678901234567890 device

c:\adba>adb reboot fastboot

c:\adba>fastboot devices
0123456789012345 fastboot

c:\adba>fastboot flash recovery recovery.img
(bootloader) recovery partition type: raw
target reported max download size of 1052770304 bytes
sending 'recovery' (11844 KB)...
(bootloader) Ready to receive: 0x00b91000 size of data
OKAY [ 0.462s]
writing 'recovery'...
(bootloader) Flashing partition: recovery
OKAY [ 1.064s]
finished. total time: 1.530s

c:\adba>

but... I can't give command adb reboot recovery. It says: error: device not found

So I rebooted it manually, and in recovery there is no working adb command (it's normal I purpose). And any adb root or adb disable-verity are still as before.

What changed when I've flashed this recovery?

EDIT:

Quite far away. In recovery:

c:\adba>root.bat

c:\adba>adb remount
remount of system failed: Success
remount failed

c:\adba>adb install Superuser.apk
failed to copy 'Superuser.apk' to '/data/local/tmp/Superuser.apk': Permission de
nied
- exec '/system/bin/sh' failed: No such file or directory (2) -

c:\adba>adb install RootChecker.apk
failed to copy 'RootChecker.apk' to '/data/local/tmp/RootChecker.apk': Permissio
n denied
- exec '/system/bin/sh' failed: No such file or directory (2) -

c:\adba>adb push install-recovery.sh /system/etc
failed to copy 'install-recovery.sh' to '/system/etc': Permission denied

c:\adba>adb push su /system/xbin/daemonsu
failed to copy 'su' to '/system/xbin/daemonsu': Permission denied

c:\adba>adb push su /system/xbin/su
failed to copy 'su' to '/system/xbin/su': Permission denied

c:\adba>adb push su /system/xbin/sugote
failed to copy 'su' to '/system/xbin/sugote': Permission denied

c:\adba>adb push su /system/xbin/supolicy
failed to copy 'su' to '/system/xbin/supolicy': Permission denied

c:\adba>adb push supolicy /system/xbin
failed to copy 'supolicy' to '/system/xbin': Permission denied

c:\adba>adb push libsupol.so /system/lib
failed to copy 'libsupol.so' to '/system/lib': Permission denied

c:\adba>adb shell chmod 0755 /system/etc/install-recovery.sh
- exec '/system/bin/sh' failed: No such file or directory (2) -

c:\adba>adb shell chmod 0755 /system/xbin/su
- exec '/system/bin/sh' failed: No such file or directory (2) -

c:\adba>adb shell chmod 0755 /system/xbin/daemonsu
- exec '/system/bin/sh' failed: No such file or directory (2) -

c:\adba>adb shell chmod 0755 /system/xbin/sugote
- exec '/system/bin/sh' failed: No such file or directory (2) -

c:\adba>adb shell chmod 0755 /system/xbin/supolicy
- exec '/system/bin/sh' failed: No such file or directory (2) -

c:\adba>adb shell chmod 0644 /system/lib/libsupol.so
- exec '/system/bin/sh' failed: No such file or directory (2) -

c:\adba>adb reboot

c:\adba>

... failed: Success? What a strange error?

adb root - works in recovery, when typed, it "thinking" and show next line, so it works (I suppose). And next adb disable-verity shows as above - disable-verity only works for userdebug builds.

So what's next? [MENTION=4478781]yuweng[/MENTION], you are my only hope 0:) And remember, this is X70R not X70 - just in case 0:)