I highly recommend doing not update the bios to v1.22.0 of your laptop dell latitude 3520 (i7 / 11th) ...
Today i update to BIOS version (Latitude_3420_Latitude_3520_1.22.0.exe) and when the pc started the update, stuck on - 0% saving manifest - and after that i wait for 4h and nothing happened ... i tried to shut down but ... until, i plug out the charge of my PC and battery discharged ... and the happy news that i still access to recovery mode of bios ...
Hello there just to give an update.
I had contacted dell support and they had asked me to manually remove the connector from battery to mb
After this I drained the excessive charge from all the components by holding the power button of the laptop for 1.5 minutes
Then I rebooted the machine and it worked
however I would not suggest anyone to try the above steps without an official consultation with a dell certified support engineer or agent
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We are facing this issue with our customers. Update have been deployed via Dell Command Update and same symptom...
Asking users to take off back of the computer and disconnect the battery is not an option at all!
We will have to wait for battery to drain completely to be able to boot again. I can't understand this lack of communication from Dell!
facing the same problem here, on a brand new Dell Latitude 3520, after downloading and installing the BIOS update using Dell Update..... I'm currently waiting for the battery to drain out, in the hope that after the boot you can gain access to the computer: