How to update BIOS for N2810/N2810PLUS/N2810PRO/N4810

How to update BIOS for N2810/N2810PLUS/N2810PRO/N4810

1. Prepare an USB Flash in FAT 32 format, non-bootable.
2. Download & unzip follwoing files & folder onto USB flash.
N2810 N2810PLUS http://www.thecus.com/Downloads/BIOS/N2810_and_Plus_1.16.zip
N2810PRO http://www.thecus.com/Downloads/BIOS/N2810Pro_1.9.zip
N4810 http://www.thecus.com/Downloads/BIOS/N2810_and_Plus_1.16.zip

USB ROOT path
│ BIOS_upgrade_steps.txt
│ fparts.txt
│ fpt64.efi
│ N2810_BIOS_V1.16.bin
│ QSI_DIAG_TEST.txt
│ startup.nsh
│
└─EFI
       └─boot
                   bootx64.efi

Note: BIOS bin file and startup.nsh files are paired,
please check BIOS kit released and do not swap/change them.
3. Power NAS off & remove all HDDs.
4. Plug USB flash drive to front panel USB port
5. Power on system, BIOS upgrade will start automatically.
After BIOS upgraded, system will shut down automatically.
(over all time is about 3~4 mins)