WhatsApp 4.2.2 is officially deprecated. It will not work with modern WhatsApp servers. You cannot verify your phone number or send messages through official channels using this version. This guide is for archival, educational, and development testing purposes only.
If you are determined to download this file, you must avoid fake malware-ridden sites. Here is the safe methodology.
Absolutely not. This is a trojan. Anyone modifying WhatsApp 4.2.2 to bypass server checks has inserted malicious code to steal your SMS, contacts, or OTP codes. Never use modded WhatsApp versions.