There is a new Blockbuster free rental code. You can now try using: G418A
And here is an updated list of all the codes that should be working right now:
GT17A
GL15A
G416A
G417A
G418A
G616A3
BBXDVD1
SSD17A1
SSD17A2
SSD17A3
SSD17A4
Check out a Blockbuster Express location near you.