FC20 SPP Hex Data communication

I am using BT SPP by connecting EG25 and FC20.
ASCII data is received normally through +QBTSPPDATAIND URC.

But Hex Data is only received the first byte of data between " ".

ex) Receive: D3 00 0D 0A
EG25 send to MCU 22 D3 22 2C 34
22 = "
2C = ,
34 = 4(byte)
Data 00 is missing in this example, and Only the first byte is received by the MCU, no matter how many data actually received.

When communicate with Hex format data, is there a possible way?

Please share your EG25 FW version