To downgrade, you will need to flash an FTF. You will not find an FTF that is prerooted/has a custom recovery. FTF files are unmodified stock firmware only.
You will need to flash a stock FTF with Flashtool, root and flash the dual recovery yourself (or use the unrooted install method for XZDualRecovery).
Search in the general section for a 4.2.2 FTF. There are many available. The region does not matter if you're going to immediately flash a different rom anyway.
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