I have a Redmi Note 4 (mido) with unlocked bootloader and root. Until a couple of days ago (on LineageOS 14) everything worked fine. Then suddenly my USB flash drives were not recognized anymore. Also in TWRP I was not able to mount USB-Otg anymore. I did every possible wipe with no success and installed the latest mido firmware. Yesterday I flashed Miui Global Stable rom via Fastboot without success. I am still not able to mount my USB flash drive. The cables and flash drives work perfectly on other devices, so this can not the problem. Also rebooting to Recovery and Fastboot work fine. A solution for my problem would be greatly appreciated. Thanks in advance for any comments.