Apple had just released their latest OS for their iPhone and iPod Touch devices. So what is new with this OS 3.1.3 updates? Let's see, from the description of the updates, it seemed like it's just some minor bug fixes and not any major changes made. According to the key notes released on the new OS, the updates includes a number of bug fixes and enhancement on issue with 3rd party apps that can't be launch sometimes and most importantly enhanced the accuracy of the battery life on iPhone 3GS. You can download and install the new OS via iTunes update now. Note, the new OS 3.1.3 (7E18) also updates the baseband firmware, so for those who use software to unlocked their iPhone, please don't update.
For those (like me) who had JB their iPhone, it is not recommended to update to the new OS just yet. At least for iPhone 3GS, iPod 2G and iPod 3G this is still not possible yet. The Dev Team are still testing their beta RedSn0w 0.9.2 for the said models. But for iPhone 3G users, they can use the RedSn0w 0.9.2 to JB after updating to the new OS. Redsn0w only works (JB & unlock) for iPhone 2G but if you don't care about unlocking, then iPhone 3G go ahead. Please take note again, it doesn't work on iPhone 3GS. As always, be reminded that hacking your phone might void your warranty so please proceed with caution and at your own risk. Always back up your phones data before trying it out. Will update you all when either Dev Team or GeoHot managed to JB the new OS. So for the time being, will still stick with my OS 3.0.