dev_debug_vboot: command not found

Have You tried accessing the binary with the full path?

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On Debian possible default full paths are:

/usr/bin/dev_debug_vboot - from package: vboot-utils

You may install the required package with command apt-get install {package}
Error in other languages:
dev_debug_vboot: bevel nie gevind nie
dev_debug_vboot: comandă negăsită
dev_debug_vboot: comando não encontrado
dev_debug_vboot: commande introuvable
dev_debug_vboot: command not found
dev_debug_vboot: käsku ei ole
dev_debug_vboot: không tìm thấy lệnh
dev_debug_vboot: komanda nerasta
dev_debug_vboot: Kommando nicht gefunden.
dev_debug_vboot: kommandot finns inte
dev_debug_vboot: komut yok
dev_debug_vboot: nie znaleziono polecenia
dev_debug_vboot: níor aimsíodh an t-ordú
dev_debug_vboot: no se encontró la orden
dev_debug_vboot: no s'ha trobat l'ordre
dev_debug_vboot: opdracht niet gevonden
dev_debug_vboot: parancs nem található
dev_debug_vboot: perintah tidak ditemukan
dev_debug_vboot: príkaz nenájdený
dev_debug_vboot: příkaz nenalezen
dev_debug_vboot: команда не найдена
dev_debug_vboot: командата не е открита
dev_debug_vboot: 命令找不到
dev_debug_vboot: コマンドが見つかりません