Installing and checking firmware on mesa 5125

hi im trying to check firmware on my 5125card and7177dautherboard.im frustrated as hell sins i cant find any decent step by step instruktion on the matter other than one on www.wiki.eusurplus.com/index.php?title=Category:Mesa_Interface .
im very new to linux and im obviously doing someting wrong,can firmware be check and installed in any other way than with"terminal window commands??.
i have bougt a 5125 and 7177 card from eusurplus.com ,not a plug and go kit so i think a need to install new firmware.
i have put som additional 5125 folders under the hostmot2 folder that i downloaded from mesas homepage xlm files and .bit .pin etc.
i typed sudo nautilus in terminal window and used tts as password and i got into root.
i have not been able to verify or flash firmware to my 5125card .and i have change permissions under properties on all files and folder under/hostmot2 to "tts"
when atempting to flash firmware into 5125card thru terminal i get "unknown command"
a simple step by step instruction would be appreciated.
also "sudo" is that a run or execute command???.

1. Download 5i25.zip from Mesa
freeby.mesanet.com/software/parallel/5i25.zip
2. Unzip the 5i25.zip file
3. in a terminal window cd to the newly created configs/hostmot2/ directory
4. in the same window type and then

this is what i get.
am i typing it wrong or what.

You need to install mesaflash:

then i get this

some text are in swedish but on line E: it says "E: unable to locate(or find) pakage mesaflash

What linuxcnc installation (OS+linuxcnc version) do you have?
the
apt-get install mesaflash
should work on the stock linuxcnc package

ubuntu 10.04 lts lucid lynx

what linuxcnc version?

linuxcnc 2.50

Ahh, that's probably too old to have the mesaflash package available

I would probably update linuxcnc to 2.7.4

you might try

sudo apt-get update

and then sudo apt-get install mesaflash

but I expect 2.5 is just too old