LG V521 Tab FRP bypass - new SW/Beta access request LG FRP TAB MEGA THREAD

Have this V521 Tab with frp, was initially on V52120N - the latest, however some have reported success with 0кторus on V52120L therefore tablet now on 20L firmware.

With the latest LG 2-3g service tool tried different models like K373, H850, M700 all fail with same error regardless if 20L or 20N, can try downgrading futher to 20F but this seems risky - others report going that far down causes bootup issues. All these FW are 7.0

see threads linked below

http://forum.gsmhosting.com/vbb/f799...wered-2545768/

http://forum.gsmhosting.com/vbb/f799...wered-2394206/

http://forum.gsmhosting.com/vbb/f453...nlock-2421971/

http://forum.gsmhosting.com/vbb/f177...ypass-2168543/

http://forum.gsmhosting.com/vbb/f453...-k373-2271013/

http://forum.gsmhosting.com/vbb/f453...-fail-2533845/

http://forum.gsmhosting.com/vbb/f453.../#post13716426


REQUESTING SOME FORM OF BETA ACCESS OR RESOLUTION FOR THIS ERROR:

Detecting write method...
Init write method... fail
Init misc method... fail
Init sign method...
Execute sign method... done
Checking sign method... done
Init EXT4 ... done
Resetting frp...
Laf cmd info: send LAF_CMD_SIGN, retry #1
Laf cmd info: send LAF_CMD_SIGN, retry #2
Laf cmd info: send LAF_CMD_SIGN, retry #3
Laf cmd error: LAF_CMD_SIGN could not write.
Error reset locks
Elapsed: 60 secs. --> (v9.62)