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bluetooth tiwi5 module

hi ,

we using Tiwi5 chip ,wifi is enabled but we are facing problem with bluetooth.

we are using below procedure for loading bts file

ln -s 480-0025.bts TIInit_7.6.15.bts
./hciattach2048 -n /dev/ttyS3 texas 3000000 flow

iam getting following errors:

#####################################################

Found a Texas Instruments' chip!
Firmware file : /lib/firmware/TIInit_7.6.15.bts
Loaded BTS script version 1
Initialization timed out.

#######################################################

read_local_version
tty unavailable to perform write
kim: couldn't write 4 bytes
kim: failed to read local ver
download firmware failed
ldisc_install = 0
ti_st_open: st_register failed -22

regards karthik