this is the senario
At the beginning of 2014 I download a qt wallet, I did a backup in a external storage
The wallet was empty
In April 2014 I received a payment in litecoin
I forgot to backup the wallet.dat
I have the pubblic address of that payment and I know the person who sent me the payment
In 2017 I formatted my computer, so I delete my appdata folder with the precious wallet.dat and its transaction
Is there any way to get my litecoin back?
is it correct to import my friend privatekey for that transaction to get back my litecoin?
I mean, if he writes ‘dumpprivatekey + address’ in his wallet console and send me that key, and I import that key in my wallt, am I able to get back my litecoin?