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 # Libreboot T480 flash full guide
 
+## Update firmware to specific version
+
+1- Download [n24ur40w](https://download.lenovo.com/pccbbs/mobiles/n24ur39w.iso)
+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- Download [source code code](https://codeberg.org/libreboot/pico-serprog) and 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