Info:

Os:
OS: 5.2.19591(Build 19591.1.1.6)
ROM Version: Diamond Surface 6.1.1.15
ROM Date: 30-06-2008
Radio: 1.00.25.03(Seperate download)
Protocol Version: 52.26a.25.09w

Programs and tweaks added:

• Advanced Config 2.1
• PIM Backup 2.5.0.0
• TotalCMD
• PocketRAR
• Adobe Flash lite
• NetCF 3.5(better performance)
• Adobe PDF 2.5.103000.60r2
• HTC Album 2.0.18161424.1
• Arcsoft MMS 5.0.27.25
• HTC Audiobooster 2.0.18143227.4
• HTC Audiomanager 1.5.18161432.0
• HTC Camera 6.00.31364.00
• HTC connectionsetup 1.5.34057
• HTC Xt9 1.5.31365
• HTC FMRadio 1.6.18161621
• HTC Fullscreenplayer 1.05.080602
• JBED Java
• HTC Teeter 1.3.5221602
• HTC MP3 Trimmer 1.1.18143421
• HTC Quickgps 1.00.18152630
• HTC G-sensor 3.3.18153516
• HTC Streaming media 3.0.18153213
• HTC Taskmanager 2.1.34308
• HTC TouchFlo 3.0.29946
• HTC USBtoPC 1.0.18143432
• HTC YoutubePlayer 1.0.1815.3318
• HTC Manila 1.0.1630.30
• Diamond Surface Opera9.5 6.1.1.15 Customed
• Manilla Weekday
• Programs Ordered into folders
• Custom ringtone
• Custom autorun
• Enbabled all camera modes(can be disabled in AC 2.1)
• All windows uses gsensor(to disable delete the gsensor link in opstarten)
• Opera further customed and optimised for faster operation.
• Fixed storage for ie and mail attachments
• Little more mory free due to opera being optimised
• TF3D Config 0.3.1

Tweaks

• Security disabled
• XT9 All Languages
• Internet cache moved to internal storage
• Attachments moved to internal storage
• Hidden SIM Contacts
• Enhanced touchflo speed
• Custom Graphics
• All camera tweaks
• Tweaked live messenger for dutch users
• Autolock disabled(but can be anabled via advanced config "user interface tab")

Removed:

• ZIP
• Autoupdate
• WelcomeCenter
• All Ringtones and sounds
• All Sample images
• All Sample videos
• RSSHUB

Future enhancements:
More memory free
Custom startup animation
Suprise me with your suggestions

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Before flashing please perform the Developers Hard SPL
Developers hard spl info and downloads
(if you allready done this you can skip)

Downloads:

6.1.1.15 NLD:
Link: Diamond Surface 6.1.1.15 NLD

6.1.1.14 NLD:
Link: Diamond Surface 6.1.1.14 NLD

Quelle: Xda-Developers