Windows Mobile has this concept of Application Lock that defines the amount of access an application has to certain parts of the phone. No Application Lock means that applications can do and access pretty much anything. To the other extreme, full Application Lock means that no applications can even be installed. Now, most devices ship with some level in-between. Where signed applications are allowed and some unsigned applications are also allowed. But not every unsigned application. Those that write to restricted parts of the device are no allowed to install. As most devices do, HTC’s latest non-touch screen device, the s740, falls somewhere in the middle. Overall, this is a good thing because it protects the average user from installing harmful applications. But for those of us that want more, it’s a pain. With the s740, it appears to be a little more restrictive than in the past. I’ve had problems installing some of my everyday applications that normally have not caused me any problems.
For whatever reason, removing the application lock on the s740 is not the same as past devices and requires a little more effort. I’ve detailed the steps required below. Simply follow these steps and you’ll be able to install any application you like.
- Download the Remove Security application from MoDaCo forums (You can use this one from the s710). Copy the CAB file to your device and then browse to it on the phone and run it.
- Download PHM Registry Editor, copy it to the device and run it.
- Browse to the following key: HKLM \ Security \ Policies \ Policies \ 00001001 The value should be listed as 2 by default. Change this to 1
- Now browse to the following key: HKLM \ Security \ Policies \ Policies \ 00001005 The value should be set to 16 by default. Change this value to 40
- Connect your device to your computer and let Active Sync or Windows Mobile Device Center make the connection. Then you need to download SDA Unlock Tool (from here) to your computer and run it. Click the Remove Lock button.
- When SDA Unlock is done running, disconnect your device and restart it. Once it finishes booting, you will have removed the application lock and will be able to install your applications.
I have not tested this on the new s743, but it’s the exact same phone as the s740, but with North American radio in it. So I don’t see any reason why this wouldn’t work on the s743 as well. If you have an s743, please post in the comments and let me know how it worked for you.




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