Should you downgrade the bootloader?

Many people wonder if they should downgrade their 4.6 bootloader to 3.9 bootloader. Thanks to ZiPhone this is incredibly easy, and probably pretty tempting for everyone. However, I'd like to make people aware of the facts, as I see them, any advantages / disadvantages. Here is some information I got from geeb on the #ziphone channel. (server: irc.iphone-elite.org)

* You can unlock the 04.03.13 baseband on 3.9bl. This means you can have a 1.1.3 unlocked phone with Google Locator working.
* In 4.6 they made a change to the format of the secpacks. This means that all older secpacks (older than 1.1.3) will not validate on 4.6 - so only the 1.1.3 secpack currently validates on 4.6
* 4.6 requires a secpack of a newer version to let you do things with the baseband (that is, without our exploits). 3.9 requires the same version OR newer.


Many people think that if you have a 4.6bl phone, you must downgrade the bootloader in order to unlock it. This is untrue, the 1.1.3 baseband simply cannot be unlocked at this time if you have 4.6bl. When you go through the unlocking process you will end up with 1.1.3 firmware and 1.1.2 baseband (04.02.13_G). With this setup, the only thing that won't be working is Google Locator, but there is a workaround to make it work...kinda. This can be achieved by running navizon or LocateMe from installer at every reboot.

Also, at this time, there is no way to upgrade your bootloader back to 4.6. That means if for some reason you need warranty services, you will be far from OTB (out of the box) status. Whereas, all other things you do to your phone, excluding hardware work or course, can generally be undone in one way or another bringing you at least close to an OTB state.

So as I see it, the advantage of downgrading your bootloader is to make Google Locator work properly. I guess the real question is right now, how important is a properly working Google Locator to you?

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