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macrumors 68020
Original poster
http://jaxov.com/2009/09/revert-downgrade-iphone-3gs-firmware-3-1-to-3-0/
I have very bad battery life now. Will this work to downgrade from 3.1 to 3.0?
Did you read this sentence in 1st paragraph ?
Note that the process below will only work for those who have saved their SHSH to Cydia Server.
If you didn't save your SHSH files in Cydia, you cannot due this.
If you did, than you should be able to downgrade.
