Failed attempt

hopefully a few Sn0wBreeze experts will chime in most of us don't use it. My PC os Hackintoshed duel boot. in most cases I prefer to use Mac to jailbreak. I can tell you Sn0wbreeze is not well received. Main reason I'm telling is there might not be the fastest response on this.

 

Same here, Im done hunting custom IPSW's created with pwnage on the internet.
Booting to my hackintosh and making pwnage pwned firware is great
Back to the OP's question I believe he can JB tethered on 4.2.7 and then install the patch from the pushfix repo to untether his CDMA iphone on 4.2.7