For you the correct command is
before the command
if-eqz v0, :cond_1b
If you have an ODEX rom, you can NOT simply change the odex file at /system/framework.
You must Re-Odex the jar file, using your phone.
- I use xdaAutoDEOTool v1.0.3 for De-Odex jar files.
- After, I use apktool for decompiling/compiling and Notepad++ for editing.
- At end I use a script for Re-Odex the edited jar file, inside phone (required root and busybox)
[There are scripts for this (carefull with bootclasspath). I use my own]
In case something goes wrong with Re-Odex, you must have a way to restore system (a .zip file with original .jar and .odex file to install with CWM?)