[KIN Two Software Development] X-15D9W8491:
When I was messing with BitPim earlier, I tried out the Protocol Analyser and got this:

18:52:09.717 Other CDMA Phone: Listing files in dir: '.efs_private'

18:52:09.717 Other CDMA Phone: sendbrewcommand Data - 20 bytes

<#! phones.p_brew.listfilerequest !#>

00000000 59 0b 00 00 00 00 0d 2e 65 66 73 5f 70 72 69 76 Y.......efs_priv

00000010 61 74 65 00 ate.

18:52:09.765 Other CDMA Phone: brew response Data - 17 bytes

<#! phones.p_brew.listfileresponse !#>

00000000 13 0b 00 00 00 0d 2e 65 66 73 5f 70 72 69 76 61 .......efs_priva

00000010 74 t

18:52:09.765 Other CDMA Phone: Failed to list files in dir .efs_private

18:52:09.780 Other CDMA Phone: Listing subdirs in dir: '.efs_private'

18:52:09.780 Other CDMA Phone: X recurse=0

18:52:09.780 Other CDMA Phone: sendbrewcommand Data - 20 bytes

<#! phones.p_brew.listdirectoryrequest !#>

00000000 59 0a 00 00 00 00 0d 2e 65 66 73 5f 70 72 69 76 Y.......efs_priv

00000010 61 74 65 00 ate.

18:52:09.780 Other CDMA Phone: brew response Data - 17 bytes

<#! phones.p_brew.listdirectoryresponse !#>

00000000 13 0a 00 00 00 0d 2e 65 66 73 5f 70 72 69 76 61 .......efs_priva

00000010 74 t

18:52:09.780 Other CDMA Phone: Failed to list dir .efs_private

18:52:11.015 Other CDMA Phone: Listing files in dir: 'CGPS_ME'

18:52:11.015 Other CDMA Phone: sendbrewcommand Data - 15 bytes

<#! phones.p_brew.listfilerequest !#>

00000000 59 0b 00 00 00 00 08 43 47 50 53 5f 4d 45 00 Y......CGPS_ME.

18:52:11.030 Other CDMA Phone: brew response Data - 47 bytes

<#! phones.p_brew.listfileresponse !#>

00000000 59 0b 00 00 00 00 00 0f 00 01 00 93 1a e0 00 00 Y...............

00000010 6c 00 00 bb 1a e0 00 08 16 43 47 50 53 5f 4d 45 l........CGPS_ME

00000020 2f 43 47 50 53 43 65 6c 6c 44 42 46 69 6c 65 /CGPSCellDBFile

18:52:11.030 Other CDMA Phone: sendbrewcommand Data - 15 bytes

<#! phones.p_brew.listfilerequest !#>

00000000 59 0b 01 00 00 00 08 43 47 50 53 5f 4d 45 00 Y......CGPS_ME.

18:52:11.046 Other CDMA Phone: brew response Data - 55 bytes

<#! phones.p_brew.listfileresponse !#>

00000000 59 0b 00 01 00 00 00 0f 00 01 00 93 1a e0 00 2c Y..............,

00000010 00 00 00 bb 1a e0 00 08 1e 43 47 50 53 5f 4d 45 .........CGPS_ME

00000020 2f 43 47 50 53 43 65 6c 6c 44 42 4f 74 61 50 6f /CGPSCellDBOtaPo

00000030 73 52 65 63 6f 72 64 sRecord

18:52:11.046 Other CDMA Phone: sendbrewcommand Data - 15 bytes

<#! phones.p_brew.listfilerequest !#>

00000000 59 0b 02 00 00 00 08 43 47 50 53 5f 4d 45 00 Y......CGPS_ME.

18:52:11.062 Other CDMA Phone: brew response Data - 47 bytes

<#! phones.p_brew.listfileresponse !#>

00000000 59 0b 00 02 00 00 00 0f 00 01 00 93 1a e0 00 3c Y..............<

00000010 00 00 00 bb 1a e0 00 08 16 43 47 50 53 5f 4d 45 .........CGPS_ME

00000020 2f 67 70 73 6f 66 66 73 65 74 73 2e 62 69 6e /gpsoffsets.bin

18:52:11.062 Other CDMA Phone: sendbrewcommand Data - 15 bytes

<#! phones.p_brew.listfilerequest !#>

00000000 59 0b 03 00 00 00 08 43 47 50 53 5f 4d 45 00 Y......CGPS_ME.

18:52:11.078 Other CDMA Phone: brew response Data - 3 bytes

<#! phones.p_brew.listfileresponse !#>

00000000 59 0b 1c Y..

18:52:11.092 Other CDMA Phone: Listing subdirs in dir: 'CGPS_ME'

18:52:11.092 Other CDMA Phone: X recurse=0

18:52:11.092 Other CDMA Phone: sendbrewcommand Data - 15 bytes

<#! phones.p_brew.listdirectoryrequest !#>

00000000 59 0a 00 00 00 00 08 43 47 50 53 5f 4d 45 00 Y......CGPS_ME.

18:52:11.092 Other CDMA Phone: brew response Data - 3 bytes

<#! phones.p_brew.listdirectoryresponse !#>

00000000 59 0a 1c Y..

18:52:12.953 Other CDMA Phone: Getting file contents 'CGPS_ME/gpsoffsets.bin'

18:52:12.953 Other CDMA Phone: sendbrewcommand Data - 27 bytes

<#! phones.p_brew.readfilerequest !#>

00000000 59 04 00 17 43 47 50 53 5f 4d 45 2f 67 70 73 6f Y...CGPS_ME/gpso

00000010 66 66 73 65 74 73 2e 62 69 6e 00 ffsets.bin.

18:52:12.983 Other CDMA Phone: brew response Data - 71 bytes

<#! phones.p_brew.readfileresponse !#>

00000000 59 04 00 00 00 3c 00 00 00 3c 00 ff ff 38 00 00 Y....<...<...8..

00000010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................

00000020 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................

00000030 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................

00000040 00 00 00 00 00 00 00 .......

Near the beginning of these, it says things about being unable to open up the .efs_private directory, along with its subfolders. If someone were able to open these, we may find something interesting. Hope this helps!