strange problem with c905 acoustic driver

hi to all,yesterday i try to change original acoustic driver on my phone with other,but when i start to use a2uploader i recevied this error:
18/12/2009 17:08:57 ChipID:E900,EMP protocol:0401
18/12/2009 17:08:57
18/12/2009 17:08:57 PHONE STATE: "RETAIL"
18/12/2009 17:08:57 FLASH CID: 0052
18/12/2009 17:08:58 OTP LOCKED:1 CID:52 PAF:1 IMEI:352xxxxxxxxxxxxx CERT:RED
18/12/2009 17:09:01 a2_ldr_version,err details:0000104A
18/12/2009 17:09:01 Elapsed:134 secs.
18/12/2009 17:09:25 ChipID:E900,EMP protocol:0401
18/12/2009 17:09:25
18/12/2009 17:09:25 PHONE STATE: "RETAIL"
18/12/2009 17:09:25 FLASH CID: 0052
18/12/2009 17:09:26 OTP LOCKED:1 CID:52 PAF:1 IMEI:35202xxxxxxxxxxxxx CERT:RED
18/12/2009 17:09:29 a2_ldr_version,err details:0000104A
18/12/2009 17:09:29 Elapsed:4 secs.

can you help me?

use the latest version of a2uploader

i used 22/09/2009 version

any other help me????