ao-dumpflash: 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/ao-dumpflash - from package: altos

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