According him, currently no easy access available to handle saving both SHSH types -- one with or without ApNonce in the request -- however this does not mean the tool is useless. You still can use for the future need. And it's recommended to use Zip for your .shsh directory and place it in the safest place.
Now you can download TinyUmbrella 50.10.01 according your Operating Systems:
Download TinyUmbrella 5.10.10 for Windows
Download TinyUmbrella 5.10.10 for Mac OS X