Hi,
I just quickly checked if a new update was available and found that SE has published the release notes for the R4A06 update for CDA 162003/2:
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CDA-number: CDA162003/2
Organiser version: R4A06
P900 Maintenance Release 1 (MR1)
Improved sound quality in Office handsfree mode (adjusted echo canceller parameter adjusted).
Updated Java support (MIDP2 - MIDlet signed against Verisign certificate).
Improved capitalization in T9 (T9 now capitalize characters correctly).
Enhanced handling of accessories (HBH 200 CLI support).
Improved visualization of the stand by clock (The Clock screen saver digit has been enlarged).
Corrected "find" functionality in e-mail application (The find function did not work in earlier releases).
P900 Maintenance Release 2 (MR2)
Improvements in Bluetooth, for example better interworking with Bluetooth headsets, dialup and stability improvements.
Improvements in Audio and Video streaming.
Java MIDP2 improvements.
Improved tuning of colors of pictures taken by the camera.
Miscellaneous minor improvements.
P900 Maintenance Release 3 (MR3)
Further improvements in Bluetooth performance related to Bluetooth headsets.
Support for OMA Download added.
Trust settings for common CA certificates fixed to work also for internet browsing.
SW Install - Fixed MIDP OTA Installation failure due to truncated User Agent Header.
Play random files in MP3 player - correct file played and random is more random.
Corrected missing filename when ID3 tag is not present in music file.
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Release level R4A06 seems to be containing all these maintencance releases.
Andreas