Click on Build -> Output Native Binary . The SDK will compile the Java logic and resource files into a singular, executable .vxp file. How to Install and Test the .VXP File on Your Phone
First and foremost, you must have a Windows PC, as the official development tools were designed for this platform.
Converting (Java Archive) to .VXP (Maui Runtime Environment) is a process used to make Java-based mobile applications and games compatible with feature phones that use the MediaTek-based MRE platform (such as certain Nokia S30+ models and Cherry Mobile devices). Methods for Conversion Convert .jar To .vxp
As a proprietary and largely undocumented format, working with VXP files has been described as "very frustrating". However, analysis has revealed that a VXP file is often a container. Tools like binwalk have shown that inside a VXP file, there can be multiple zlib compressed data streams, alongside image resources like GIF files. After decompressing these streams, you often find the actual ELF binary alongside various application resources like sprites and fonts.
This involves decompiling the Java code and re-porting it to C/C++ to be compiled specifically for the target phone's hardware. Click on Build -> Output Native Binary
Click or Compile . The tool will generate a .vxp output file along with necessary resource folders. Method 2: Utilizing the MediaTek MRE SDK (Advanced)
Complete Guide: How to Convert .JAR to .VXP Files Finding a direct converter to turn a Java-based file into a MediaTek .VXP file is a common challenge. Modern smartphone users rely on Android or iOS, but millions of classic feature phones still use the MRE (MediaTek Runtime Environment) platform, which exclusively runs .vxp applications. Converting (Java Archive) to
Launch the program and choose the .jar or .jad file.
If you’ve rediscovered an old MediaTek-based device (like those from the Nokia 220 series, Alcatel, or various "MTK" clones) and want to run your favorite classic Java games, you’ve likely realized that .JAR files won't run natively on an MRE-only system.
Here is everything you need to know about porting your favorite old-school Java games and applications to the .VXP format. Understanding the Formats: .JAR vs. .VXP