Nokia S40 Software Installation and Backend Tutorial

Actually, I wanted to directly transfer the software, but it failed…\Required tools: MC Manager (available on this site). If you don't have MC or your phone doesn't have a certificate, you'll need to press confirm many times…\The method to add background code to software on the phone using MC, and a solution for when .zip compressed files can't be opened.\Recently, a lot of people on the forum have been asking about adding background code. In fact, the answer can be found just by searching, but beginners are not used to using search, so I pretended to be a newcomer from Mars and posted a tutorial. The method for adding background code is taken from others, and the solution for the compressed files not opening is something I figured out myself.\Enough talk, let's start the tutorial.\First, change the extension of the software you want to add background code to .zip and open it. Find the META-INF folder and locate the MANIFEST.MF file. Select all text, long-press 4, and choose UTF-8. Enter text editing mode. At the last line (press 9 to go to the end), start a new line and enter the code Nokia-MIDlet-no-exit:true (note there should be no space before true). Save and exit. Exit MC, go to the storage folder, and use your phone's built-in function to rename “_jar.zip” to “.jar”. If you don't understand, search on Baidu: MC adding background code to S40 software.