There must be some correlation between the number of clicks the ROM download link got, versus the performance of the ROM. Within 2 days of release, it got more than 200 of clicks. Okay, not a great deal for the mainstream  ROMs like Miri or Energy, or the actual download is approximately just 3/4 of of the clicks. Regardless,that’s a significant milestone for Merlion NG series in my humble opinion.

The demographic of my user base is pretty much expected. Since I have build the Chinese Simplified Input/Display support, I would naturally anticipate most of the users to come from a Chinese populated location. So users from Singapore & China made up close to 60% of Merlion NG series total user base. What’s interesting is I do have users from the Europe & Middle East countries.

If you have not flashed the latest Merlion NG series ROM (v1.65), you should because you never know what you have been missing until you have tried it. Some had even described the ROM to be on steroid,  or on drug cocktail!  Don’t believe? See the below performance chart of the NG series ROM performance.

If the chart above does not give you much context, just imagine this. A stock (i.e. official) ROM would only achieve a total SPB benchmark index of 1590. In comparison to the latest release of Merlion NG series, the latter is 2 times faster! Even for the first generation of Merlion series, v2.68 is generally one of the better performing ROM among the rest of HD2 custom ROMs, so I will not be surprised, if we were to put a ranking table to compare the performance of all the custom ROMS in xda-developers or htcpedia, Merlion NG series should be in the top ranks, if not right at the top

Introduction to cooking

We are all very familiar with setting up a new operating system in our PC or notebook. Doing so on our Windows mobile device, is however, not so straight forward. The only way is to setup the operating system, along with the desired applications, into an image, which will then be flashed into the mobile device. The process of building the image, is also known as cooking.  The person who involves in cooking, is known as chef.

Ins and Outs of a Windows Mobile ROM

An ROMimage contains 1 or more image chunks, such as Radio, Splash, Bootloader, OS, etc. In this blog, I would be focusing on OS image, which is made up of 4 sections, namely XIP, SYS, OEM and EXT.

XIP, which stands for “Execute in Place”, is a method of executing programs directly from the persistent storage, instead of copying it to and running it from RAM. The files in this section, are essentially the kernel of the OS, and it follows very closely to the version & build of the Windows Mobile operating system that you are planning to build upon. You should not be trying to exclude any of the files in this section, although in some cases, you may need to modify the NK.EXE file to customize the version number to be displayed on your device’s splash screen.

SYS, is where you would find the rest of the default Windows Mobile operating system files, including all the default WM software and the resource files such as images or data files. This is the section, where you can disable some of the applications and their corresponding resources to reduce the OS footprint. For example. you can disable “Autoupdate” since we almost would not be getting any update from Microsoft over the air (OTA). Another example, if you do not use CHome, the new Windows Mobile home interface, you can disable it.

OEM section, contains all the drivers and configurations developed by the phone manufacturer for the specific device. Please careful of using a different driver set (possibly from another device) as it may render your device unbootable if the driver conflicts. In the OEM section, there is one file known as “initflashfiles.dat”, usually found in OEM_Lang_XXXX folder (where XXXX is the language identifier represented in numeric term), which is used to define how the files will be copied to the phone after a hard reset. By default, a file cooked in a ROM goes to \Windows folder, and the initflashfiles.dat will copy it (not move) to a different folder, such as “\Program Files\XXX”

Lastly, the EXT refers to the set of application packages that are added usually by the phone manufacturer to fulfill certain functionalities of the phone. If you would like an application to be setup automatically after each hard reset, this is the section where you add the application package.

Tools you need to cook

We all know a kitchen is where a chef would whip up some nice crusine dishes. Similiarly, in order for one to cook the rom, he would need a set of utility tools which are also known as kitchen. In the early days of cooking era, chefs (i.e. those who cook) had to build their ROM image via command line utility. These days, we have developers building visual kitchen, which makes the whole cooking process much easier and convenient. There are a few visual kitchens (Ervius, Vistang, etc) floating around in the xda-developers, and they are mostly based on Bepe’s platformbuilder tool. For the remaining of this guide, I would be using visual kitchen to describe the process. For beginner, I find Vistang‘s kitchen pretty much idiot proof, whereas Ervius have more comprehensive features.

• Ervius Kitchen
• Vistang Kitchen

Process of cooking

Firstly, look for a kitchen that has all the 4 sections (i.e. XIP, OEM, EXT, SYS) pre configured. This way, you have a good base to start with. Then you can easily select or  unselect packages that you would like to include/exclude to the rom that you eventually create. If you have to create the kitchen from scratch, you would then need to extract the applications and files from the official ROM (see step 1).

1. Extracting packages from official ROM

The easiest way is to use the kitchen tool, to interactively dump the files out from the original ROM image. Ervius Kitchen would have this feature.  Otherwise, you need a set of command line utilities to break the original ROM image (nbh format) into several chunk (nb format), and then further extract the application files from the nb files. You can find the detail of the tools you need from this link

2. Remove or Add/Update packages in OEM, SYS or EXT

Once you have all the files in your kitchen, you can start configuring your ROM according to your preference. I find this tutorial very useful, in guiding, from start to end, on the various configurations that can happen on your ROM. If you have new application that you want to add to the ROM, and they are not part of the existing package, you need to ensure that you create a package for it, which this link has described very well on how you do so. In some kitchens like Vistang, all you need to do is to create a folder and have the files stored in the sub folder named “files”, without the need to create the dsm or rgu configuration files.  If there’s any need to update the registry, you can create a registry file “app.reg” in the folder. The most effective way to get familiarised is to look at some of the existing packages.

Lastly, if you would like to include new build of the Windows Mobile to your kitchen, you need to ensure that you have the SYS and ROM folder updated.

Once you are done with the file dump, make sure all the files are placed in the appropiate section of your kitchen. Different kitchens may have different folder structure, but by and large, they are organised by the 4 sections which I have described earlier.

3. Customise the shortcuts and other file initialisation

Since all the cooked files are by default copied to \Windows directory, you need to configure initflashfiles.dat if you need to copy the files to other folder such as Start Menu or Program Files. The syntax of the command in initflashfiles.dat are basically as follow;

• Directory(“\Windows”):-Directory(“Help”)

Creates a new sub folder “Help” in “\Windows” directory

• Directory(“\My Documents\My Pictures”):-File(“Destination.jpg”,”\Windows\Source.jpg”)

Copy a new file named “Destination.jpg” from “\Windows\Source.jpg” to “\My Documents\My Pictures” directory.

The initflashfiles.dat only create new sub folder or copy files from one place to another. If you need to delete a file outside of \Windows directory, you need to use the Configuration Service Provider to execute the deletion command. The configurations are maintained in provisioning xml file (or known as provxml file)  You can also use this method to set up other items such as your Activesync configuration, Registry update, etc.

4. Build & Flash your ROM

If you want to ensure that your ROM version is reflected correctly in the RUU utility program, you may need to modify htcrtproj in the Tools folder of the kitchen. For Ervius kitchen, the file is Leo.htcrtproj (for Leo kitchen) and for Vistang, it’s os.htcrtproj

For some kitchen, such as Vistang’s kitchen, you can also include other part of the ROM image, such as radio image, to your final cook ROM. Usually these features require you to have a registered copy of the kitchen software though.

Now that you have your ROM built, you can then start flashing it to your device.

Useful Links

• Sous-Chef’s Guide to Da_G’s Ervius Visual Kitchen 9.7
• sparkienl Comprehensive Kitchen Guide & Useful links
• Standard Leo Package Listing & the dependencies
• How to create OEM package and OEM package listing
• Da_G’s listing of standard Windows Mobile packages (description & dependencies)

Despite holding a non-development responsibility in my IT professional job, I still have a soft spot for software programming, and therefore, I have been developing software during my free time, and some of them were showcased in my own blog

The year of 2010, is a new era for me, as I have “progressed” beyond software development, and ventured into Windows Mobile operating system image development, or better known as “ROM cooking”, and greatly helped by the availability of easy-to-use tools.

dZenkinZ © Merlion Leo is my first attempt of the ROM building venture, for HTC HD2 Leo. The primary objective of the effort is to have a customized ROM based on my personal needs, with the emphasis on striking a balance between performance and nice user interface. So you may find that some of the included/excluded features not something you would expect of a “public ROM”. Nevertheless, recognising that this is probably the first Leo ROM that’s based on WWE (WorldWide Edition, i.e. English ROM) with Simplified Chinese display & input support, I have decided to share my work with you so that this provides an alternative to rest of the ROMS out in xda-developers.

And why Merlion as the name of my ROM? Since this is possibly the first made-in-Singapore Leo ROM, and Merlion is a well recognised icon for Singapore, I thought why not? It surely beats using some other geeky or cheesy name, isn’t it?

If you like to use my ROM, you can head over to xda-developers for the download link and discussion.

ShowTraffic SG has been updated to release 1.2. It fixes some bugs, and introduce a new feature to support Google Map Traffic, which enables one to go directly to Google Map from Show Traffic application.

You can download from here Update on 28th Jan: version 1.3 has been released to fix a bug and also added two new camera points.

Last weekend, I managed to reverse engineer this feature and included it in my latest Show Traffic application. Check out the video, and you know what I’m talking about!

You can download the latest version from this link. Version 1.1 is now “skinable” (yay! my first skinable appy) and is compatible to both Q(W)VGA and (W)VGA Windows Mobile devices.

To skin the application, you have to modify the following image files

1. BG_selector background image of the item
2. BG_highlight background image of the selected item
3. BG_spacer background image of the spacer between items
4. BG_title background image of the title bar (at the top of the application)

Additionally, if your skin is a white/light-color based theme, then you need to change the foreground and background colour so that the text can be readable on your light-color based theme. This setting can be found in the registry path (HKCU\Software\Zenyee\ShowTraffic) You can download this zip file for a sample light-based skin with the appropiate registry.

However, other than a more intuitive interface as a result of the iPhone UI, there isn’t really a breakthrough functionality that can’t be offered outside of iPhone. The live traffic, is afterall taken from the local authority website (OneMotoring), and I decided to bring this capability to Windows Mobile world.

That said, the Windows Mobile SDK doesn’t really offer gesture-based interface, unless you work in the native C++ environment. Since this application is meant to be a “quicky” one (as I cannot afford to burn my weekend just for this) so I have to design and build based on what compact .NET framework could allow me. This is built in less than half a day, including creating the graphics and the testing of the links, so please pardon this appy for its very basic interface.

Note:  Traffic images and contents are sourced from Intelligent Transport System Centre of LTA (Land Transport Authority). You may go to this OneMotoring link for the online version.

You can download the beta from here (only WVGA/VGA supported at the moment)

So I did some investigation, and found out a way to disable HTC messaging app, and revert back to the original Windows messaging application, i.e. pocket outlook, for text messaging. Technically speaking, it’s a combination of registry tweak and a small patch utility I wrote to overcome a bug/problem as a result of disabling HTC messaging application.

Installation process will automatically apply the hack and install the patch utility

You need to restart your device to have the changes effect

Uninstallation will undo the hack automatically

You can download from here

“Back FavPeople Up!” is the latest software I have created for Windows Mobile devices that sport HTC’s touchflo 3d user interface. Basically it is a backup utility tool to manage the  favorite contacts found in the touchflo’s “People” tab. The challenge here is not so much about building the application itself (as I have found out building using managed code speed up the development cycle tremendously). It is really the effort to find out how and where HTC embeds its favorite contact information. After scanning through the entire windows registry and hundreds of manila files (HTC’s custom xml files), I figured out that it must be in the PIM database, where all the contacts, appointments, etc are stored.

The hack requires some understanding of the POOM (Pocket Outlook Object Model), and contact is one of the objects in the model. After some trial and error, I finally found out that the information are saved under the property set in the contact object

For download of the utility, you can go to xda-develoeprs to download

Few days ago, a fellow forumer in Xda-developers had requested for a feature in my Rotate Screen utility, which was created some 8 months ago while I was developing the navigation panel for Xperia. So I decided that I should just add that in today.

Rotate Screen essentially is a small footprint utility that enables you to rotate your Windows Mobile screen. It supports rotation via user interface or command line. Using command line method, you can rotate your screen via toggle mode (toggle between two orientation modes), set mode (set your screen to a specific orientation mode) or cycle mode (rotate your screen to the next available orientation mode, from 0 to 270 degree)

More information can be found in this XDA-developers thread