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Aosp roms discussion thread. [Minor FAQ inside]

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This thread is for discussing aosp roms, like Slim, Carbon, etc. except for CM though since it has its own thread. This is meant to keep the unhelping chit-chatter out of the development threads where bug reports best reside. When posting here, clarify what aosp rom you're on. Do not post bug reports here, post them in their respective development threads!

One more thing! While this thread progresses, use search and/or read the faq to see if your question has already been posted before, to avoid repetitiveness and us older lads becoming grumpy.

F.A.Q: (frequently asked questions)
 

I would like to dualboot, what should I do?
Flash siyah kernel

Help! I flashed siyah and now my rom doesn't boot!
It's because whatever rom you use has a newer mali driver which most kernels aren't updated for. Especially siyah which hasn't seen some dev love in ages.

What rom should I flash?
We don't know, you have to try them out yourself!

What's gapps, and is this inside xx rom?
Gapps is short for google apps, which is the Play store and some other apps you sorely need. Go too http://goo.im/gapps and download the gapps package for whatever version you have. Newer aosp roms are most certainly 4.2.2. Some roms, like Slim, have their own separate gapps packages specially made for those roms. In those cases, the standard gapps from goo.im will not work!

Help! I flashed xx rom but now it doesn't boot!
Try making a factory reset in the recovery and reflash whatever rom you were on. Also, in most cases, CWM works better for rom installations. Twrp craps out for unknown reasons.

Help! I wiped data and reflashed the rom but it still doesn't boot!
That sounds like a rom issue. Try flashing an earlier version of the rom.

Help! Something screwed up and now my phone doesn't boot anymore!
Well, reboot into recovery and see if a reflash helps. It is always recommended to regularly keep your system backed up in case something nasty happens. Perform a nandroid backup every once in a while.

What is a nandroid backup?
It's like a screenshot of your current state which you can return to if something bad happens. A nandroid backup backs up the system, boot (kernel) and data and, if specified/selectable, it also backs up cache and recovery. Maybe even efs (in twrp). However, it doesn't back up the modem!

I flashed xx kernel and I now get a black screen upon reboot!
That is because the rom you flashed has the new mali driver from the 4.2.1 leak and the kernel you flashed isn't updated with this driver. Stay on the provided kernel for now.


Thanks to:
 

I forgot to give thanks where due, and I'm so sorry for that. If I got an advice from you, hit me up and your name goes on this list.

C_tho; for mentioning the mali driver stuff.

Noble Sir Slaphead20; for suggesting I'd maintain an FAQ and suggesting I'd make an entry covering gapps.

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