There are many ways to get Flash installed
Use APPS gui to get any of the flash update utilities from tc-8.x x86 & x86_64 repositories
getFlash.tcz
Will install the latest official version (v25.0.0.148 i think). Adobe has committed their resources to supporting Linux once again.
getFlash_beta.tcz
Will install the very latest beta version
getFlash10.tcz
From the tc-8.x x86 repo will install an old version for PC's low on resources
Same goes for firefox:
firefox_getLatest.tcz
Which will install the very latest version (latest by default, or will allow you to update, or install any version of your choice)