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Old 02-17-2008, 04:10 AM
Join Date: Feb 2008
Location: Finland
Posts: 5
mn87504 is on a distinguished road
HTC TyTN II (Kaiser) reboot problem

My previous phone HTC TyTN (Hermes) worked well with my BMW Bluetooth handsfree (X3, manufactured 10/2004) using varios phone ROMs and Radios, starting from the original WM5 to many custom versions of WM6 which I tried. Supported functionalty was phonebook integration and calling, but no SMS messages. That was perfect for me.

Now I purchased a brand new HTC TyTN II (Kaiser), which seems to have serious problems with the car Bluetooth. It pairs ok, but immediately when the actual bluetooth communication starts, the phone always reboots itself. The problem is known to other users also, as can be read for example here.

This seems to be a common problem also with another phone model which is T-Mobile Dash (HTC S620) as can be read here and here.

I have tried so far:

- Updated phone firmware from the original ROM 1.56.414.2 Radio Protocol to a custom made WM6.1 edition (3.0 Sleuth WWE), Radio:, Protocol:

- Updated the car software to the latest version 4-1/91 (from Nav-SW disk V30) as adviced here.

- Tested with and without JETware extension found here.

I have recorded a log of the bluetooth communication using JETware extension, please see the attached file. At the end of the log file you can find a row with strange characters apparently causing immediate reboot to the phone. The problem is not caused by Jetware, because the phone behaves exactly the same without Jetware.

Any ideas how to sort this out?

Attached Files
File Type: txt BTAGATLog.txt (1.2 KB, 222 views)
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Old 02-18-2008, 05:45 PM
Join Date: Dec 2006
Location: Switzerland
Posts: 2,575
KiwiJochen is on a distinguished road
Did you load the Bluetooth hotfix published by HTC in December last year?
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Old 02-19-2008, 02:15 AM
Join Date: Feb 2008
Location: Finland
Posts: 5
mn87504 is on a distinguished road
Originally Posted by KiwiJochen
Did you load the Bluetooth hotfix published by HTC in December last year?
Yes I did try that too, just forgot to mention it on my tried so far list. Thanks for the tip anyway.

Now I even tried downgrading phone ROM, Radio and protocol to a version that someone said to be working for him at another forum and that was said to be working in one of the "official" bmw phone compatibility lists here. ROM version was 1.56.405.5, Protocol and Radio Downgrade had no affect on the problem.
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Old 03-17-2008, 07:19 AM
io66's Avatar
Join Date: May 2005
Location: X5world
Posts: 9
io66 is on a distinguished road

My actual configuration

Dutty's Official WM6.1 5.2.19199 UC RTM


Paired w/o problem and more than 300 contacts transfer
I hope this help, for any doubts I am fully available
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