http://cz.tp-link.com/resources/software/TL-WR842N D_V1_130322.zip
to napises do wget. ale potom to este budes muset rozzipovat, nemam ani sajnu jaky je na to command na routeri :) Ho d to tam z PC cez ten WinSCP (a hned aj zmen nazov na a.bin, nech do toho mtd comandu potom nemusis pisat nazov suboru jak svina