It sounds like you’re looking for the Opera Mini 45 Java (JAR) version — likely for an older Java-enabled feature phone (like a Nokia, Sony Ericsson, or Samsung from the late 2000s/early 2010s).
Better UI: Improved touchscreen support with kinetic "flick" scrolling and larger hit areas for buttons and links. Installation Tips
Borrowed from newer versions, it allows for multiple simultaneous downloads, along with the ability to pause and resume them. Private Browsing: opera mini 45 java jar download link
The version 4.5 update introduced several high-demand tools previously exclusive to more advanced versions of Opera:
Alternative Download (JAD File):
Some Java phones require the .jad file to install the application correctly.
Download Opera Mini 45 JAD It sounds like you’re looking for the Opera
Opera Mini 4.5 is a lightweight Java ME (J2ME) browser specifically designed for older or low-end feature phones that cannot run newer versions like Opera Mini 7.1 Wap Review Key Features
Communities like NokiaFan or Esato frequently maintain sticky threads with direct JAR attachments. A clean link from such a forum: Private Browsing: The version 4
Filename pattern (for authentication):