Hi all I meet some errors while run hstest in bluez-utils-3.12. toolchain: kernel-2.6.10,bluez-libs/utils-3.12, CSR BC4 UART, i-tech BlueBAND my board can connect the headset in rfcomm and sco level,but some bcsp_recv errors issue out while run hstest, here is the result: [root@root bin]$hstest play cq.wav 00:0D:3C:E8:1A:AC 2 Voice setting: 0x0060 RFCOMM channel connected SCO audio channel connected (handle 45, mtu 64) bcsp_recv: Short BCSP packet bcsp_recv: Checksum failed: computed ab42 received 9707 bcsp_recv: Short BCSP packet bcsp_recv: Short BCSP packet bcsp_recv: Short BCSP packet bcsp_recv: Short BCSP packet bcsp_recv: Error in BCSP hdr checksum bcsp_recv: Short BCSP packet bcsp_recv: Short BCSP packet bcsp_recv: Checksum failed: computed 0dbc received fff2 bcsp_recv: Short BCSP packet bcsp_recv: Short BCSP packet bcsp_recv: Short BCSP packet bcsp_recv: Short BCSP packet ..... these errors never stop, and my headset can hear noise with no music Is this the kernel version problem or anything else? how to solve it? Thanks -- Best Regards ------------ Tony