OPERATIONS:
- Prepare a USB disk and format it to FAT32;
- Upgrade 【HLD_3_RRU_H000_S1.9.X.X.ota】 first. Copy the 【HLD_3_RRU_H000_S1.9.X.X.ota】 to the root directory of USB disk and plug it to the HUB to upgrade;
- Copy the 【HLD_3_RRU_H000_S1.0.X.X.ota】 to the root directory of USB disk and plug it to the HUB to upgrade; (Will take 10~20mins)
- Connect the remote headset to the hub to upgrade the headset.
