A: The new firmware uses a different keylayout file. Go to /system/usr/keylayout/ and replace Hi3798M_remote.kl with the stock version.
If you have the EC6108v9U (2GB RAM), absolutely update it to Android 7.0 – the performance gain is massive. If you have the v9A (1GB/4GB), stick to a lightweight "Nano" firmware or replace the box entirely. Huawei Stb Ec6108v9 Firmware Update
A: Power cycle immediately. You have a bad NAND block. Enter recovery (Volume up + Power) and do a "Wipe data/factory reset" three times, then reflash. Conclusion The Huawei STB EC6108v9 firmware update is a high-risk, high-reward procedure. While a successful flash transforms this locked-down carrier box into a snappy Android TV device, a mistake leaves you with a paperweight. A: The new firmware uses a different keylayout file
A: On the EC6108v9C? No. The HDMI 1.4 port is hardware-limited to 4K @ 30fps. Firmware cannot fix this. On the v9U, yes, 4K @ 60fps works perfectly. If you have the v9A (1GB/4GB), stick to