You can try using
this site to make the second transaction confirm faster. It might still take few hours though.
This will work.
It will not. Please read the the whole thread before spamming your signature.
Edit: I read more posts of LoyceV and it doesn't seem like he's a signature spammer. Still though next time read a little bit more of the thread not just first and last reply.
I did read the thread, and I think you were wrong here:
ViaBtc rejects all transactions that have a fee of less than 10 sat/B. And since his second transaction spends an unconfirmed output from his first transaction he cannot push it to ViaBtc because that transaction simply doesn't exist in their mempool.
Double spending doesn't mean spending an unconfirmed output, it replaces that transaction and uses the original confirmed output to start over. Since that one had a high enough fee, ViaBTC could pick it up. Unless ViaBTC rejects transactions that are double spends, but I see no reason why any miner would do that. And yes, I checked the txid.
If I'm wrong here - which I doubt - I'd like to know where I'm wrong. I now want to test it by myself.
BTW, if you think I'm sig spamming: my campaign manager has a small reward for you if you report me. No need to mention that in any threads.