WRT300N v2.0 firmware

Hi, I am new to this router and the forum, so please bear with me thanks. I just found my WRT300N v2.0 router is still on firmware 2.00.08 which had some problems with wireless connections. I searched Linksys website but can only find the latest firmware 2.00.21. When I tried to upgrade it I got a message saying "Wrong version, not for this device" or something like that. I searched this forum and found out I need to upgrade to 2.00.13 first (Which has two .bin files and needs to do two step upgrades). But unfortunately I can not download any older version than the 2.00.21 from Linksys website. Does anybody still have the 2.00.13 or any version that can be upgraded from 2.00.08? Or a location I can download from? Thanks very much for your help!