[Galaxy Tab 2 General] billysam:
The SUPER Custom Rom Guide and Troubleshoot

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Dealing with most of the trouble making bugs and useful insight into cornering them like a rat

1. Tab is Stuck on Charging Screen. Tab is not turning On, battery completely depleted/Not charging, Nothing is Working

2. Stuck On Samsung Logo Screen.

3. Stuck in a Boot Loop.

4. Stuck On Firmware Upgrade Encountered an Issue.

5. Bricked.​

Explained in Post number 2

Well that would sum up for me and most of the users will agree that these are the cases that really needs attention and no cussing about how your droid lags and hangs, doesn't makes it to the lists :p So, by the end of this guide, I would hope and expect at least so much from users to at least have a better knowledge and general idea of how things work here. so users don't just go on saying HELP HELP I am a NooB, Please read and understand first, dude. Thank you I will try to make it simple even if you're not so cool.

A few words about me if you're interested

OH!! you clicked!! wow. well what should I say here. ahem, hello gorgeous. I am Sam :D So, unlikely,

So guys, I wasn't lucky enough to get everything organised at one thread and spend a lot of time finding a perfect place for everything I would want to, so I thought this would be worth a share. It took me almost a month to write this stuff. yeah I was bored to the core, so put in some fun stuff

along with most of my learning experience and knowledge gained here on XDA in this Guide over the span of 3 years, I would just read and experiment it myself, kind of guy, I wouldn't have dared to put up this guide sooner, but now after successfully solving most of the cases even other people hard bricks and trivial issues that I get to see everyday and keeping myself safe from hard bricks with still not knocked out by one. all thanks to this community this is my gift that I would like to give in return, and I am just someone who likes to get to the edge of the world, exactly, on a round globe. Thank You

Android Broken into 5 parts, Worth a Look

Well not exactly broken but explained in 5 parts ( There are more but I choose not to, thank me for that)

1. Boot section(bootloaders/kernel)

This is droid's heart(accept it), responsible for the droid's birth and keeping it alive, sleeping, waking up, slowdown and speedup, overall working of the system, it has impact on every part of the droid. mess up things here, and droid won't start up at all and will stop beating and malfunction. then you will need a pacemaker and CPR(J-TAG) to revive it or it will keep the brain in coma. yes pretty much like our heart.

2. System section

This is a droid's mind, Its the place where all main work and processes are happening, with rooting and flashing you get a licence to open that mind and analyse, read logs, stats. that brain, heart and all your body is producing, you can see it all and make changes in it, put few things from outside. clean it, format it, wipe it, make amend(patches). So, imagine all that happening in your mind and the idea of cleaning your brains for once, wiping the mind, giving new and fresh experiences(newer and updated files) new interface(new UI), affecting the overall performance and changing to a whole new perspective with which you look at things.

So Clear your mind about this and remove your bad experiences and upgrade it with new stable ones. err not the custom beta and alpha ones, cause then you will give your headaches and put them in depression.

3. Data

This place is the memories part, and everything is stored up here. Everything. some would be overtly stored(on sdcard) and some deep inside you(under system/data/data). now overtly ones are not a concern here but deeper ones are hard to forget and lingers in your system, these won't go well if your heart and mind changed or aren't supposed to be the same, or in trouble will they? (i know I am good at explaining this)

4. Cache

Well, this one is the dreams part. damn I am right just admit it now. :D they come from your memories, keep it or forget about it, that's unto you. sometimes it can interfere with your old memories when you get new ones. so if unknown problem persist, with your heart and mind working nicely please clear your dreams and look into some of the memories. otherwise get the mind checked first.

5. Recovery

This is the soul part, whenever your heart or mind or data or dreams are feeling lost, you connect to it and revive them accordingly, or contact ODIN.

I hope you had some fun in the above part and a very clear and better understanding, So now you know where things are going wrong​

The Beginning

Ensure your Charging Adapter, USB ports and your USB cable, are in good shape and working in accordance, Never depend on USB hubs or any USB port that is a faulty or slow performer, use original cables, or buy new ones, the cable does create problems in some cases. if you're sure that these are fine, then let it in charging for few hours to even a day. depending upon how fast the droid recovers.

So what do you do, when you have to go the custom way or solve your problems?

i. Press Power and Volume Up(right button) or

ii. Press Power and Volume Down(left button) or

iii.Press Power and Hold touch screen combinations.

iv. Press nicely and hold it for good few seconds there, no hurry, really.

v. Long press the power button, release the power button and, when you see a logo appear during boot-up, hold down both the volume up and volume down buttons. Continue holding the two buttons until the droid boots up with a safe mode indicator at the bottom-left corner of its screen.

vi. Plug it in PC with the USB.

vii. Remove the Battery blow air on it and pat a little and put it back inside.

So what happens after doing what I said above?

i. (a). The tab goes into download mode

ii (b). The tab goes into recovery mode

iii(c). the tab switch off/on again.

iv (d). Now the Combinations worked properly, beware cause many a times on droids this could be a seriously tricky part.

v (e). The tab goes into safe mode.

I know you got tired there holding the buttons and No you didn't had to press it so hard

vi (f). Your droid and PC responds and connects.

yeah, I know Nothing much of a Help, but it will make sense when it doesn't

vii(g).

this is an age old trick of which there is no proof of success, but it has been working since ages. :D

Choose your steps wisely here now, if possible just read the main points and see if you have done all those first. that will save your data in some case and in some save you from getting all messed up.

WITHOUT MODIFYING SYSTEM FOR HARDCORE STOCK USER

1. SAFE MODE

This mode generally helps when the problem is arising from 3rd party apps and is making your droid reboot again and again, lagging, hanging issues, so whatever is causing problem, if you can reach here, you can uninstall them clear their data and cache, and yes, free up some internal space too and backup your data from settings-backup as well. then factory reset if you want to.

2. STOCK RECOVERY WAY

You have never rooted your droid and you don't want to root and you don't want to move away from stock, well pressing the Power and Volume Down(left button) will take you there.

try to clear cache/data factory reset(will lose you data stored on internal droid) and yes it does solve few of the cases, even if it doesn't look so promising, it has solved, and will solve quiet a few issues. no chance of getting that data stored on internal., phone book, messages, chats.

3. THE DOWNLOAD MODE WAY

Flash a stock firmware Explained in post the download way.​

Now if you are already Rooted or want to Root to have a better option of saving your data, or reviving your droid
it's like performing a surgery on your body by yourself.
So be careful, you have been warned, Samsung voids the warranty,
and I don't give any Guarantees that these Instructions will work for all.

MODIFYING FOR PEOPLE WHO RISK IT

1. Getting Rooted

2. Custom recovery Way and (post number 4)

3. Download mode Way. (post number 5)

AND FOR THOSE WHO WILL BLAME ME

Seriously?

Getting Rooted is only advised if you're going to stay on stock rom, debloating the system and making changes yourself.

if you're going to install a custom rom, which would be generally rooted, so you can skip to getting a custom recovery first.

CF auto Root are better option for any device to get rooted rather than other options

CFauto-root GT-P3100

CF auto root for GT-P51xx

or you can visit the chainfire homepage for your device which contains the root file for almost every device.

ROOT FROM DEVICE WITHOUT PC