I patched my DIR 300 NRU B7 router to someone else's firmware. I have installed KEENETIC_START_2.04 (AAKV.7) C5. In general, I wanted to fix the problems with the router. The Internet has often crashed on regular firmware. Now the Internet is falling more often. Out of 100 megabits, I get only 40. What to do now? How to return the firmware? I was just looking for a normal firmware.