2025-05-31 19:28:51 +02:00

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# Libreboot T480 flash full guide
## Update firmware to specific version
1- Download frimware version: [n24ur39w](https://download.lenovo.com/pccbbs/mobiles/n24ur39w.iso) or download from vendor
2- Install `[geteltorito](https://github.com/rainer042/geteltorito)`
3- Generate .img from .iso `geteltorito -o t480_bios_n24ur39w.img /home/lb/Downloads/n24ur40w.iso`.
4- Flash iso to USB `sudo dd if=t480_bios_n24ur39w.img of=/dev/sdX bs=4M conv=fsync status=progress`
## Prepare flahser
Prepare raspberry pico:
1- Clone [source code code](https://codeberg.org/libreboot/pico-serprog), and
2- Follow instructions to compile and so on...
## Dependencies
We need to install a bunch of dependencies we'll list them below and we'll share how to do it
### GIT
Install git following your OS
- [Debian](https://git-scm.com/downloads/linux)
- ...
### lbmk
```sh
git clone https://codeberg.org/libreboot/lbmk
cd lbmk
```
#### Install build dependencies:
- debian:
```sh
./mk dependencies debian
```
- arch:
```sh
./mk dependencies arch
```
- ...
#### nvmutil
```
cd /projects/clones/lbmk/util/nvmutil
make install
```
#### ifdtool
```
cd /projects/clones/lbmk/src/coreboot/default/util/ifdtool
make install
```
#### nvmutil
```
cd /projects/clones/lbmk/src/coreboot/default/util/ifdtool
make install
```
## Install flashrpog
Install following [their docs](https://flashprog.org/wiki/Flashprog)
## Build pico image
Go to `lbmk` folder and build the `.uf2` files:
```sh
cd /projects/clones/lbmk
./mk -b pico-serprog
```
Insert your raspberry pico H pressing the back button to mount to your system, then copy the `.uf2` file:
```
sudo cp /projects/clones/lbmk/bin/serprog_pico/serprog_pico.uf2 /media/user/RPI-RP2/
```
## Backup firmware
### 1- Do 3 backups just in case
1- First backup we'll name it like `t480_stockbios_1.bin`:
```sh
root@lb-pomc:/projects/libreboot/bin/vic# flashprog -p serprog:dev=/dev/ttyACM0 -r t480_stockbios_1.bin
flashprog p1.4 on Linux 6.1.0-33-amd64 (x86_64)
flashprog is free software, get the source code at https://flashprog.org
Using clock_gettime for delay loops (clk_id: 1, resolution: 1ns).
serprog: Programmer name is "pico-serprog"
Found Winbond flash chip "W25Q128.V" (16384 kB, SPI) on serprog.
Reading flash... done.
```
2- Second backup we'll name it like `t480_stockbios_2.bin`:
```sh
root@lb-pomc:/projects/libreboot/bin/vic# flashprog -p serprog:dev=/dev/ttyACM0 -r t480_stockbios_2.bin
flashprog p1.4 on Linux 6.1.0-33-amd64 (x86_64)
flashprog is free software, get the source code at https://flashprog.org
Using clock_gettime for delay loops (clk_id: 1, resolution: 1ns).
serprog: Programmer name is "pico-serprog"
Found Winbond flash chip "W25Q128.V" (16384 kB, SPI) on serprog.
Reading flash... done.
```
3- Third backup we'll name it like `t480_stockbios_3.bin`:
```sh
root@lb-pomc:/projects/libreboot/bin/vic# flashprog -p serprog:dev=/dev/ttyACM0 -r t480_stockbios_3.bin
flashprog p1.4 on Linux 6.1.0-33-amd64 (x86_64)
flashprog is free software, get the source code at https://flashprog.org
Using clock_gettime for delay loops (clk_id: 1, resolution: 1ns).
serprog: Programmer name is "pico-serprog"
Found Winbond flash chip "W25Q128.V" (16384 kB, SPI) on serprog.
Reading flash... done.
```
### 2- Checksum
We must verify the backup files are correct:
```sh
root@lb-pomc:/projects/libreboot/bin/vic# sha256sum t480_stockbios*.bin
3ce1b1b03aebe90295dece36385b9bca6b31de505a239b6859be6b702bea054f t480_stockbios_1.bin
3ce1b1b03aebe90295dece36385b9bca6b31de505a239b6859be6b702bea054f t480_stockbios_2.bin
3ce1b1b03aebe90295dece36385b9bca6b31de505a239b6859be6b702bea054f t480_stockbios_3.bin
```
## Backup thunderbolt
### 1- Connect the clamp properly otherwise you will get this error:
```sh
root@lb-pomc:/projects/libreboot/bin/vic# flashprog -p serprog:dev=/dev/ttyACM0 -r t480_tb_1.bin
flashprog p1.4 on Linux 6.1.0-33-amd64 (x86_64)
flashprog is free software, get the source code at https://flashprog.org
Using clock_gettime for delay loops (clk_id: 1, resolution: 1ns).
serprog: Programmer name is "pico-serprog"
No EEPROM/flash device found.
Note: flashprog can never write if the flash chip isn't found automatically.
```
### 2- Backup:
```sh
root@lb-pomc:/projects/libreboot/bin/vic# flashprog -p serprog:dev=/dev/ttyACM0 -r t480_tb_1.bin
flashprog p1.4 on Linux 6.1.0-33-amd64 (x86_64)
flashprog is free software, get the source code at https://flashprog.org
Using clock_gettime for delay loops (clk_id: 1, resolution: 1ns).
serprog: Programmer name is "pico-serprog"
Found Winbond flash chip "W25Q80.V" (1024 kB, SPI) on serprog.
Reading flash... done.
root@lb-pomc:/projects/libreboot/bin/vic# flashprog -p serprog:dev=/dev/ttyACM0 -r t480_tb_2.bin
flashprog p1.4 on Linux 6.1.0-33-amd64 (x86_64)
flashprog is free software, get the source code at https://flashprog.org
Using clock_gettime for delay loops (clk_id: 1, resolution: 1ns).
serprog: Programmer name is "pico-serprog"
Found Winbond flash chip "W25Q80.V" (1024 kB, SPI) on serprog.
Reading flash... done.
```
### 3- Check sum
```sh
root@lb-pomc:/projects/libreboot/bin/vic# sha256sum t480_tb*.bin
674fcbabd0161da5b81324e4eed18d07e22872e8fd74110d28663c348b99124c t480_tb_1.bin
674fcbabd0161da5b81324e4eed18d07e22872e8fd74110d28663c348b99124c t480_tb_2.bin
```
### 4- Erase all existing content:
```sh
root@lb-pomc:/projects/libreboot# flashprog -p serprog:dev=/dev/ttyACM0 -E
flashprog p1.4 on Linux 6.1.0-33-amd64 (x86_64)
flashprog is free software, get the source code at https://flashprog.org
Using clock_gettime for delay loops (clk_id: 1, resolution: 1ns).
serprog: Programmer name is "pico-serprog"
Found Winbond flash chip "W25Q80.V" (1024 kB, SPI) on serprog.
Erasing flash chip... Erase done.
```
### 5- Create `null.bin` from `/dev/zero` with `dd` command:
```sh
root@lb-pomc:/projects/libreboot# dd if=/dev/zero of=null.bin bs=1M count=1
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.00351479 s, 298 MB/s
root@lb-pomc:/projects/libreboot# ls -la
total 1036
drwxr-xr-x 3 root user 4096 May 25 14:20 .
drwxr-xr-x 5 root user 4096 May 25 12:41 ..
drwxr-xr-x 3 root user 4096 May 25 12:41 bin
-rw-r--r-- 1 root root 1048576 May 25 14:20 null.bin
```
### 6- Write `null.bin` to thunderbolt flash:
```sh
root@lb-pomc:/projects/libreboot# flashprog -p serprog:dev=/dev/ttyACM0 -w null.bin
flashprog p1.4 on Linux 6.1.0-33-amd64 (x86_64)
flashprog is free software, get the source code at https://flashprog.org
Using clock_gettime for delay loops (clk_id: 1, resolution: 1ns).
serprog: Programmer name is "pico-serprog"
Found Winbond flash chip "W25Q80.V" (1024 kB, SPI) on serprog.
Reading old flash chip contents... done.
Erasing and writing flash chip... Erase/write done.
Verifying flash... VERIFIED.
```
## Flash thunderbolt
We'll flash `tb.bin` to the thunderbolt memory (close to the bios cell):
```sh
root@lb-pomc:/projects/libreboot/bin/vic/rom# flashprog -p serprog:dev=/dev/ttyACM0 -w /projects/clones/lbmk/vendorfiles/t480/tb.bin
flashprog p1.4 on Linux 6.1.0-33-amd64 (x86_64)
flashprog is free software, get the source code at https://flashprog.org
Using clock_gettime for delay loops (clk_id: 1, resolution: 1ns).
serprog: Programmer name is "pico-serprog"
Found Winbond flash chip "W25Q80.V" (1024 kB, SPI) on serprog.
Reading old flash chip contents... done.
Erasing and writing flash chip... Erase/write done.
Verifying flash... VERIFIED.
```
## Flah Firmware
Seelct .rom to flash libreboot firmware to the firmware flash of the 4580
### 1- Install nvmutil
If you forgot to do it please do it now:
```sh
root@lb-pomc:/projects/libreboot/bin/vic/rom# cd /projects/clones/lbmk/util/nvmutil
root@lb-pomc:/projects/clones/lbmk/util/nvmutil# make install
install nvm /usr/local/bin/nvroot@lb-pomc:/projects/libreboot/bin/vic/rom# /projects/clones/lbmk/elf/ifdtool/default/ifdtool -i gbe:flashregion_3_gbe.bin seabios_t480_vfsp_16mb_libgfxinit_corebootfb.rom
Warning: No platform specified. Output may be incomplete
File seabios_t480_vfsp_16mb_libgfxinit_corebootfb.rom is 16777216 bytes
File flashregion_3_gbe.bin is 8192 bytes
Adding flashregion_3_gbe.bin as the GbE section of seabios_t480_vfsp_16mb_libgfxinit_corebootfb.rom.new
Writing new image to seabios_t480_vfsp_16mb_libgfxinit_corebootfb.rom.new
m
```
## 2- Change mac address
- Extract all `.bin` from the `.rom` so we can override the macaddress
```sh
root@lb-pomc:/projects/libreboot/bin/vic# cp /projects/clones/lbmk/bin/t480_vfsp_16mb/seabios_t480_vfsp_16mb_libgfxinit_corebootfb.rom /projects/libreboot/bin/vic/rom/
root@lb-pomc:/projects/libreboot/bin/vic# cd /projects/libreboot/bin/vic/rom/
root@lb-pomc:/projects/libreboot/bin/vic/rom# /projects/clones/lbmk/elf/ifdtool/default/ifdtool --platform sklkbl -x seabios_t480_vfsp_16mb_libgfxinit_corebootfb.rom
File seabios_t480_vfsp_16mb_libgfxinit_corebootfb.rom is 16777216 bytes
Flash Region 0 (Flash Descriptor): 00000000 - 00000fff
Flash Region 1 (BIOS): 00114000 - 00ffffff
Flash Region 2 (Intel ME): 00003000 - 00113fff
Flash Region 3 (GbE): 00001000 - 00002fff
Flash Region 4 (Platform Data): 07fff000 - 00000fff (unused)
Flash Region 5 (Device Exp1): 07fff000 - 00000fff (unused)
Flash Region 6 (Secondary BIOS): 07fff000 - 00000fff (unused)
Flash Region 7 (Reserved): 07fff000 - 00000fff (unused)
Flash Region 8 (EC): 07fff000 - 00000fff (unused)
Flash Region 9 (Device Exp2): 07fff000 - 00000fff (unused)
Flash Region 10 (IE): 07fff000 - 07ffffff
Error while writing: Bad address
Flash Region 11 (10GbE_0): 07fff000 - 07ffffff
Error while writing: Bad address
Flash Region 12 (10GbE_1): 07fff000 - 07ffffff
Error while writing: Bad address
Flash Region 13 (Reserved): 07fff000 - 07ffffff
Error while writing: Bad address
Flash Region 14 (Reserved): 07fff000 - 07ffffff
Error while writing: Bad address
Flash Region 15 (PTT): 07fff000 - 07ffffff
Error while writing: Bad address
```
- Set random macaddress
```sh
root@lb-pomc:/projects/libreboot/bin/vic/rom# /projects/clones/lbmk/util/nvmutil/nvm flashregion_3_gbe.bin setmac 38:E7:E9:BF:4A:BC
256 bytes read from file 'flashregion_3_gbe.bin'
MAC address to be written: 38:E7:E9:BF:4A:BC
Wrote MAC address to part 0: 38:e7:e9:bf:4a:bc
Wrote MAC address to part 1: 38:e7:e9:bf:4a:bc
The following nvm words were written:
MAC (part 0): 38:e7:e9:bf:4a:bc
00000000 38 e7 e9 bf 4a bc 01 08 ff ff 14 00 cf 00 00 80
00000010 00 10 ff ff c3 10 5d 22 aa 17 d7 15 00 00 00 00
00000020 00 00 00 00 00 80 05 a7 2c 30 00 10 00 00 00 0c
00000030 62 2a 02 0a 43 08 13 01 d7 15 ad ba d7 15 d8 15
00000040 ad ba d7 15 ad ba d7 15 00 00 80 80 00 4e 86 08
00000050 00 00 00 00 07 00 00 20 20 00 00 00 00 0e 00 00
00000060 00 01 00 40 28 12 07 40 ff ff ff ff ff ff ff ff
00000070 ff ff ff ff ff ff ff ff ff ff 00 02 ff ff 54 75
MAC (part 1): 38:e7:e9:bf:4a:bc
00000000 38 e7 e9 bf 4a bc 01 08 ff ff 14 00 cf 00 00 80
00000010 00 10 ff ff c3 10 5d 22 aa 17 d7 15 00 00 00 00
00000020 00 00 00 00 00 80 05 a7 2c 30 00 10 00 00 00 0c
00000030 62 2a 02 0a 43 08 13 01 d7 15 ad ba d7 15 d8 15
00000040 ad ba d7 15 ad ba d7 15 00 00 80 80 00 4e 86 08
00000050 00 00 00 00 07 00 00 20 20 00 00 00 00 0e 00 00
00000060 00 01 00 40 28 12 07 40 ff ff ff ff ff ff ff ff
00000070 ff ff ff ff ff ff ff ff ff ff 00 02 ff ff 54 75
256 bytes written to file 'flashregion_3_gbe.bin'
```
- Overwrite the new macaddress gbe to the initial `.rom`:
```sh
root@lb-pomc:/projects/libreboot/bin/vic/rom# /projects/clones/lbmk/elf/ifdtool/default/ifdtool -i gbe:flashregion_3_gbe.bin seabios_t480_vfsp_16mb_libgfxinit_corebootfb.rom
Warning: No platform specified. Output may be incomplete
File seabios_t480_vfsp_16mb_libgfxinit_corebootfb.rom is 16777216 bytes
File flashregion_3_gbe.bin is 8192 bytes
Adding flashregion_3_gbe.bin as the GbE section of seabios_t480_vfsp_16mb_libgfxinit_corebootfb.rom.new
Writing new image to seabios_t480_vfsp_16mb_libgfxinit_corebootfb.rom.new
```
## Flash firmware
Change the clamp to the firmware flash (should be in the middle of the board), and:
```sh
root@lb-pomc:/projects/libreboot/bin/vic/rom# flashprog -p serprog:dev=/dev/ttyACM0 -w seabios_t480_vfsp_16mb_libgfxinit_corebootfb.rom.new
flashprog p1.4 on Linux 6.1.0-33-amd64 (x86_64)
flashprog is free software, get the source code at https://flashprog.org
Using clock_gettime for delay loops (clk_id: 1, resolution: 1ns).
serprog: Programmer name is "pico-serprog"
Found Winbond flash chip "W25Q128.V" (16384 kB, SPI) on serprog.
Reading old flash chip contents... done.
Erasing and writing flash chip... Erase/write done.
Verifying flash... VERIFIED.
root@lb-pomc:/projects/libreboot/bin/vic/rom#
```
## Install OS
### Linux mint
[download](https://linuxmint.com/download_lmde.php)
#### 🧰 **What You Need**
* A USB stick (4 GB+ recommended).
* A Debian `.iso` file downloaded (e.g., `lmde-6-cinnamon-64bit.iso`).
* A working Debian system.
* Basic comfort with the terminal.
---
#### 🚦 **WARNING**
All data on the USB stick will be permanently erased during this process. Make sure you have selected the **correct device name** (e.g., `/dev/sdb`) to avoid overwriting your system drive.
---
#### 🧭 **Full Terminal-Only Instructions**
---
###### 🔍 **Step 1: Insert the USB and Identify the Device**
Run the following command to list all storage devices:
```bash
lsblk
```
Look for your USB stick. Example:
```
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 512G 0 disk
├─sda1 8:1 0 512G 0 part /
sdb 8:16 1 16G 0 disk
└─sdb1 8:17 1 16G 0 part /media/yourname/USB
```
➡️ In this case, the USB device is `/dev/sdb`.
**Do NOT use `/dev/sda` (your internal drive).**
---
###### 📤 **Step 2: Unmount the USB**
Unmount all partitions of the USB stick:
```bash
sudo umount /dev/sdX*
```
Replace `X` with the letter corresponding to your USB (e.g., `b`).
---
###### 🔄 **Step 3: Optional Wipe and Format USB (if needed)**
If your USB had problems or weird partitions, you can clear it:
```bash
sudo dd if=/dev/zero of=/dev/sdX bs=1M count=10
```
Then create a fresh partition table:
```bash
sudo parted /dev/sdX --script mklabel msdos
```
This step is **optional** if you're flashing an `.iso` that will overwrite the whole device anyway (like Debian install images do).
---
###### 💾 **Step 4: Flash the `.iso` File Using `dd`**
Run this command to write the ISO image to the USB:
```bash
sudo dd if=/path/to/debian.iso of=/dev/sdX bs=4M status=progress oflag=sync
```
**Replace:**
* `/path/to/debian.iso` with the actual path to your ISO file.
* `/dev/sdX` with your USB device (e.g., `/dev/sdb`).
**Example:**
```bash
sudo dd if=~/Downloads/lmde-6-cinnamon-64bit.iso of=/dev/sdb bs=4M status=progress oflag=sync
```
Wait patiently — `dd` takes time and shows progress if the `status=progress` flag is used.
---
###### 🔒 **Step 5: Sync and Eject the USB**
To flush write buffers and ensure all data is written:
```bash
sync
```
Then eject the USB:
```bash
sudo eject /dev/sdX
```
Now you can safely remove the USB stick.
---
#### ✅ Your USB is now ready to boot
You can now insert it into the target computer (like your Libreboot T480), power it on, and boot from USB.
---
#### 🧩 **Extra Tips**
* If you're on **Libreboot with SeaBIOS**, press **`ESC`** during boot to choose the boot device.
* If you encounter boot issues, double-check that you used the **device** (`/dev/sdX`) and not a **partition** (`/dev/sdX1`) in the `dd` command.