v20 firmware update fix error on update

[cam1965]

Cosmo  released a v20 firmware update fix today.
Yesterday I?ve did a factory reset with v20 firmware update and installed all apps that I have in the past.
Today , Planet released a firmware v20 fix. I?ve tried it. But the update didn?t install. An error has appeared after  boot.
Has anybody experienced this ?
Thank you.

[Kamikaze Comet]

I did a factory reset yesterday too. Now my phone works. I'm too tired to do it again for the 'fixed' update.

[cam1965]

I did a factory reset yesterday too. Now my phone works. I'm too tired to do it again for the 'fixed' update.

OK.
Thanks for the information.
Today I' ve installed v16 firmware  from this site ( ota test provided by ninji  in this forum ). But after this, v19  ota upgrade didn' t install.  So, I' ve  installed the v19 firmware from ninji  ( also in this forum ). Now I am again with v19 firmware. Now Play Protect is certified again.
Check your Play Protect certification status

    Open the Google Play Store app .
    Tap Menu. Settings.
    Under "Play Protect certification," you'll see if your device is Play Protect certified.

Let' s wait if the v21 firmware will install without errors.
Note : TWRP from ninji is also working without asking for password.

Thank you ninji for provide these images here.