I was able to test the driver from https://github.com/f1u77y/rtbth on my RT3290LE Bluetooth adapter. The pairing with A2DP device - Nokia 5230 was successful, but pairing with an android device with BT ver 4 not. The hcitool reports lower version of BT - 2.1 than the device itself is capable. Pairing with 2.1 devices and lower is possible, pairing with higher V 4 fails.
I was able to test the driver from https:/ /github. com/f1u77y/ rtbth on my RT3290LE Bluetooth adapter. The pairing with A2DP device - Nokia 5230 was successful, but pairing with an android device with BT ver 4 not. The hcitool reports lower version of BT - 2.1 than the device itself is capable. Pairing with 2.1 devices and lower is possible, pairing with higher V 4 fails.