I am trying to test my bb app's OTA deployment using apache tomcat 5.5 in eclipse helios, i tried the OTA install from the blackberry OS 5, OS 6 and OS 7 simulators. The apps get downloaded and installed on the OS 6 and OS 7 emulators but all the OS 5 emulators keep giving me the HTTP Error 400: Bad request The server could not understand the page request or was unable to process it for some reason. Please try loading a different page. I have added a .htaccess file to the jad and cod files folder, still i get the same results.. Any ideas? Thanks
You will need to run MDS simulator if you want to access internet from Blackberry Simulator browser. You can find MDS simulator in \MDS\run.bat
Alternatively to what Kiran stated, you can also Right Click Project > Run As > Run Configuration > Click Simulator Tab > Select the option "Launch Mobile Data System Connection Service (MDS-CS) with simulator."
I personally find it better to do this than run MDS manually everytime.
来源：https://stackoverflow.com/questions/8336738/having-issues-installing-blackberry-apps-ota-on-os-5-simulators