I have several LG N1T3s and (long story...) but have deleted some files from one of them in error and have no backup of these particular files. I can access the LG N1T3s across the network via several MAC machines or a dual boot Laptop which has Windows XP / Ubuntu dual boot. I haven't added any files to this particular LG N1T3 since the deletion of the others and won't do, until I have got to the bottom of this

I was thinking that there maybe some software (possibly Linux or Debian based?) that I could run and recover these files or is that far too hopeful? Also, I'd really need to know how to do it if it involves terminal work or Linux/ Debian knowledge...
Any help would be really appreciated!
Thanks!