I heard that someone mentioned that I could flash my LTR-40125S to LTR-48246S or LTR-48125W using one of the DOS firmware and MTKFLASH utility. However, I went onto liteon website, but there were NO Dos firmware to download. Where can I download a DOS firmware (*.bin) for LTR-48246S or LTR-48125W ??? Also, does it matters as to which one of the 48X ( LTR-48246S or LTR-48125W ) I should flashed to?