You had it installed on your phone when you bought it. and websites like tweakers.net probably also state it as special information about the phone. However I think this is really unlikely.
Hi.
I have problems with using this tool.
My device is Nexus 6 with Android 7. Can you help me?
Code:========================================================================= = This script will extract the WhatsApp Key file and DB on Android 4.0+ = = You DO NOT need root for this to work but you DO need Java installed. = = If your WhatsApp version is greater than 2.11.431 (most likely), then = = a legacy version will be installed temporarily in order to get backup = = permissions. You will NOT lose ANY data and your current version will = = be restored at the end of the extraction process so try not to panic. = = Script by: TripCode (Greets to all who visit: XDA Developers Forums). = = Thanks to: dragomerlin for ABE and to Abinash Bishoyi for being cool. = = ### Version: v4.7 (12/10/2016) ### = ========================================================================= Please connect your Android device with USB Debugging enabled: daemon not running. starting it now on port 5037 * daemon started successfully * WhatsApp 2.16.310 installed Downloading legacy WhatsApp 2.11.431 to local folder % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 100 17.4M 100 17.4M 0 0 7796k 0 0:00:02 0:00:02 -::- 7796k Backing up WhatsApp 2.16.310 remote object '/data/app/com.whatsapp-2/base.apk' does not exist Backup complete Removing WhatsApp 2.16.310 skipping data Success Removal complete Installing legacy WhatsApp 2.11.431 3647 KB/s (18329558 bytes in 4.907s) Failure [INSTALL_FAILED_VERSION_DOWNGRADE] Install complete Now unlock your device and confirm the backup operation. Please enter your backup password (leave blank for none) and press Enter: 123 Password is set but strong AES encryption is not allowed Please install Java Cryptography Extension (JCE) Unlimited Strength Jurisdiction Policy Files 7 or 8 Exiting. bin\tar.exe: Cannot open tmp\whatsapp.tar: No such file or directory bin\tar.exe: Error is not recoverable: exiting now bin\tar.exe: Cannot open tmp\whatsapp.tar: No such file or directory bin\tar.exe: Error is not recoverable: exiting now bin\tar.exe: Cannot open tmp\whatsapp.tar: No such file or directory bin\tar.exe: Error is not recoverable: exiting now bin\tar.exe: Cannot open tmp\whatsapp.tar: No such file or directory bin\tar.exe: Error is not recoverable: exiting now bin\tar.exe: Cannot open tmp\whatsapp.tar: No such file or directory bin\tar.exe: Error is not recoverable: exiting now Cleaning up temporary files ... Deleted file - D:\Projects\EXWA\key_extractor_nougat\WhatsApp-Key-DB-Extractor-master\WhatsApp-Key-DB-Extractor-master\tmp\whatsapp.ab Deleted file - D:\Projects\EXWA\key_extractor_nougat\WhatsApp-Key-DB-Extractor-master\WhatsApp-Key-DB-Extractor-master\tmp\waplen.txt Deleted file - D:\Projects\EXWA\key_extractor_nougat\WhatsApp-Key-DB-Extractor-master\WhatsApp-Key-DB-Extractor-master\tmp\sdpath.txt Deleted file - D:\Projects\EXWA\key_extractor_nougat\WhatsApp-Key-DB-Extractor-master\WhatsApp-Key-DB-Extractor-master\tmp\wapath.txt Deleted file - D:\Projects\EXWA\key_extractor_nougat\WhatsApp-Key-DB-Extractor-master\WhatsApp-Key-DB-Extractor-master\tmp\wapver.txt Deleted file - D:\Projects\EXWA\key_extractor_nougat\WhatsApp-Key-DB-Extractor-master\WhatsApp-Key-DB-Extractor-master\tmp\sdkver.txt Done Downloading WhatsApp 2.16.310 to local folder % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 100 29654 0 29654 0 0 94741 0 -::- -::- -::- 94741 Restoring WhatsApp 2.16.310 926 KB/s (29654 bytes in 0.031s) Failure [INSTALL_PARSE_FAILED_UNEXPECTED_EXCEPTION: Failed to parse /data/app/vmdl140132202.tmp/base.apk: AndroidManifest.xml] Restore complete Removing WhatsApp 2.16.310 temporary apk Deleted file - D:\Projects\EXWA\key_extractor_nougat\WhatsApp-Key-DB-Extractor-master\WhatsApp-Key-DB-Extractor-master\tmp\base.apk Operation complete Press any key to continue . . .
Code:
Failure [INSTALL_FAILED_VERSION_DOWNGRADE]
Also, are you rooted or do you use a custom ROM?