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MacNabbo
io non avevo cancellato il tegra OTA come specificato qui:
Since update 3.1, Nvidia can force updates (such as the one that bricks your tablet) to be downloaded and installed silently. No guarantees, but:
If you're on stock, delete TegraOTA (/system/app/TegraOTA if you're on 5.0 or newer, or /system/app/TegraOTA.apk if you're still on 4.4) before booting into Android (the attached ZIP file does this for you, but please check with the file manager in recovery before rebooting and let me know if it didn't work), then reboot
Note: you also will need to delete TegraOTA again if you ever install an OTA from Nvidia or a recovery image
If you're not on stock, you're probably safe
immagino di aver attivato il killswitch nel riavvio del tablet al punto 5 della guida, forse a chi prova a salvare il vecchio tablet e deve ancora incominciare la procedura descritta conviene provare a rimuoverlo...
per me ormai è troppo tardi!