Sorry it can not redownload again because our backup from whatsapp was uploaded since your sign-up from facebook-server. But i don't know. You need to think before you have signned up whatsapp than you find sdcard/whatsapp into your local drive from computer or laptop than example C:\Backup\Whatsapp-bkp than you copy whatsapp's content from sdcard ito your local disk :)
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Sorry it can not redownload again because our backup from whatsapp was uploaded since your sign-up from facebook-server. But i don't know. You need to think before you have signned up whatsapp than you find sdcard/whatsapp into your local drive from computer or laptop than example C:\Backup\Whatsapp-bkp than you copy whatsapp's content from sdcard ito your local disk :)