Downgrade to 6.1.3

[jason880615]

Dear experts, please find below my phone info:

Model : iphone 4s
Ios : 7.0.4 (11B554A)
Status : Unjailbroken
SHSH : never saved one

Currently is there a way to downgrade my ios back to 6.1.3? Please advise...

 

[willerz2]

Not possible even with blobs unfortunately. In-depth explanation here.