Bios update problem

iahve the: BIOS firmware updates: Enabled
when i try: fwupdmgr update :
it shows that there is an update:
║ Upgrade System Firmware from 1.34.0 to 1.36.0? ║
it download it and then ask me to reboot,

Successfully installed firmware
Do not turn off your computer or remove the AC adapter while the update is in progress.
Devices with the latest available firmware version:
 • UEFI dbx
An update requires a reboot to complete. Restart now? [y|N]: 

after rebooting the pc stuck in dell logo. and then when i shut down and power it again nothing changes.
i tried that many ti,es with the same results
how to fix this?

system ifno:
Operating System: Manjaro Linux
KDE Plasma Version: 6.0.2
KDE Frameworks Version: 6.0.0
Qt Version: 6.6.2
Kernel Version: 6.7.10-2-MANJARO (64-bit)
Graphics Platform: Wayland
Processors: 4 × Intel® Core™ i5-6300U CPU @ 2.40GHz
Memory: 11,6 GiB of RAM
Graphics Processor: Mesa Intel® HD Graphics 520
Manufacturer: Dell Inc.
Product Name: Latitude 7480

Update the firmware from the manufacturer tools.

i cant find a linux version of the update file in the official website:

i find this: Update the Dell BIOS in a Linux or Ubuntu environment | Dell US
i putted the exe file in a fat32 usb and then installed the update from the bios update utility.

Beside of the .exe for Windows, under “Other formats”, the BIOS can also be downloaded as a .rcv file.
You should be able to put it directly on a FAT-32 formatted USB stick and flash it from inside the BIOS/UEFI.
Have a look in the manual of your computer for detailled instructions on how to access it and do that (for Dell, I think it’s with the F2 or F12 key at startup, depending on the model).

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