Hey people I had my R4 for about 1,3 years and the microSD slot is just died / busted / broken?. It can't read any microSD atall, either gives a "Couldn't find SD/TF card" or "SD/TF card error", though the microSD card is just fine. (And yes, it do work on other R4, and I tried other mciroSD in my R4 too.) So, is there a way to fix it / repair it? And, why this has happened? I thought microSD slots lasts forever. Thanks in advance.