Once you have successfully generated your updated .vxp file, follow these steps to install it on your feature phone:
Copy the converted .vxp file directly into the designated folder.
Here's a detailed guide on manual conversion:
Last Updated: April 12, 2026
Open this manifest file using Notepad to find the , Vendor , and Version . Keep this information handy. Step 2: Set Up the J2ME Wrapper Launch your downloaded MRE Jar Converter application.
Open the tool and select your target .jar file.
The need to convert .jar files to .vxp arises almost exclusively in the context of (early 2000s to mid-2010s), such as those from LG, Huawei, ZTE, or other Chinese manufacturers that used proprietary application formats. Convert .jar To .vxp UPD
, a platform developed by MediaTek for low-cost feature phones. The Problem
You may need to decompile the original JAR into source code using a tool like JD-GUI.
Check the output directory for your newly created file. It will typically be named ApplicationName.vxp . How to Install and Run VXP Files on Your Phone Once you have successfully generated your updated
This usually means the phone ran out of RAM. VXP devices often have less than 4MB of operational memory. Try converting smaller .jar files (under 500KB) to see if they perform better. 2. Keypad Unresponsiveness
In older versions of these converters, many Java apps would crash because the .vxp environment (MRE) couldn't understand specific Java commands. A modern "UPD" (updated) version of this tool includes:
The official software development kit provided by MediaTek for compiling .VXP files. Step 2: Set Up the J2ME Wrapper Launch