BIOS update using DOS shell - TUXEDO Computers

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BIOS update using DOS shell

Caution: You assume full liability for a failed BIOS update! If problems occur during or after the BIOS update, we can NOT repair your device under warranty!

If you want to perform a BIOS update, then you need a bootable DOS system for some older TUXEDO models. If the BIOS archive downloaded for your device does not contain a file with the extension .nsh, but instead contains mainly .exe and .bat files, then you must use a DOS system to perform the flash process.

These instructions should not be a problem for somewhat experienced users, but still: Only perform a BIOS update if you are absolutely sure what you are doing. Experience with handling in the command line or terminal is more than desired!

Info: You can also access the BIOS of your TUXEDO Book by rebooting the device with the following command: sudo systemctl reboot –firmware-setup

Step 1: Creating a bootable USB stick with DOS shell

  1. To avoid data loss, unplug all unneeded storage media, such as USB sticks or USB hard disks, from your computer.

  2. Download the image for the bootable USB stick here. You do not have to unpack the archive.

  3. Now open a terminal window and insert an empty USB stick. Please note: Already existing data will be overwritten in the next steps!

  4. To find out which device ID has been assigned to the USB stick by the system, please execute the command lsblk.

(out)sda       disk     0B SD/MMC
(out)sdb       disk   7.5G Cruzer
(out)sdb1      part   801M 
(out)sdb2      part    15M 
(out)nvme0n1   disk 931.5G Samsung SSD 980 1TB
(out)nvme0n1p1 part   512M 
(out)nvme0n1p2 part   923G 
(out)nvme0n1p3 part     8G 

With this you get all hard disks and partitions displayed. Which of them is your USB stick can be determined by the name in the last column of the output or also for example by the size of the storage medium.

In this example case the output with nvme0n1 lists the SSD hard disk and with sda the internal SD card reader of the device without inserted storage medium. The system assigns the device ID sdb to the USB memory stick. The device ID is therefore /dev/sdb.

  1. Now enter the following command. Make sure that you are in the directory where the file bootstick_50M.img.gz is located. At the end of the command, match the device ID /dev/sdx to the name of your USB stick.
gunzip -c bootstick_50M.img.gz | sudo dd of=/dev/sdx

Caution: If you enter a wrong name here, you can irrevocably destroy your operating system!

Step 2: Flash BIOS

Please make sure that the notebook is connected to the power supply, otherwise the BIOS update/flash will be executed!

  1. Disable UEFI in the BIOS of your device (usually accessible via F2) before you continue! This is done in a submenu, either via UEFI Settings or Security Settings. Here you should be able to disable UEFI or change it to Legacy. If this option is not available, you should find two nearly identical entries for your USB stick in the boot menu. Once with UEFI: in front and once without. You have to select the entry without UEFI. The boot menu can be reached via ESC, F7 or F10 immediately after switching on the notebook.

  2. Then execute the commands mentioned inside the respective BIOS archive (see Update.txt or Legacy.txt) and wait shortly. The notebook switches off automatically and usually switches on again. If it does not switch off by itself, please press the power button manually until the device turns off. When it switches on again or you switch it on again after waiting for 10 seconds, you have to boot from the USB stick again via F7 or F10!

  3. After this execute the next command mentioned in the description file. Again, the notebook will turn off by itself or you would have to turn it off.

  4. If you have executed all updates/commands, please disconnect your device from the power supply for 5 minutes (and pull out the battery, if this is possible from the outside without further ado). After that, you can plug it back in and turn it on.