Originally Posted by jult
Just an FYI, this no longer works. The latest WhatsApp and Android 7+ versions don't allow you to run the legacy WA, so there's not going to be a backup of the "key" to download.
The only way to get it, is to have your device rooted.
Just not true. Let me be more precise
Originally Posted by p4r4d0x86
Just extracted WhatsApp data from:
- Lenovo P2 under Android 7.0 NON-ROOTED with latest Whatsapp version
- Galaxy S8 under Android 9.0 NON-ROOTED with latest Whatsapp version
Just uninstall your version, reboot your phone and install old version with "my" latest .bat / batch version.
If you don't reboot, it won't work (It's like there is a protection which stays in memory ; like android keeping in mind the version number of the more recent application)