Unhappy [Q] Is my GPad bricked ?

Hello guys,

I am experiencing a hard issue with my GPad. I have the V500 model (bought in France), I have unlocked it, and rooted it (everything was fine).

I decided to install CM ROM, so I have installed TWRP using the loki method, booted in recovery, formatted everything except the external SD card (the CM ROM zip file was in it).

The installation of the CM ROM failed, it showed an error. So I decided to reboot the tablet but I am now stuck on the LG logo, nothing boots. When I decide to enter Recovery mode (without USB cable plugged), it shows the screen OpenRecoveryScript, and then the tablet restarts. I can't access the main menu (see pic 1).

The only thing I have managed to do is to access the tablet via ADB. Unfortunately I don't seem to have root access...and it shows an error message (see pic 2)

I have tried lots of things these past 2 days to try and restore the system but I feel really lost now !!

Would you mind helping me with my issue ?

Thank you very much in advance!
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