Full backup and restore
I have a LG Optimus Black (P970) but I'm using this subforum and not the subforum for my phone because this a general thing, or at least the most of it.
I want to "play" with custom rom's and custom kernels. But I'm afraid because the warranty. So I have a few questions.
1. How to backup the stock rom, the stock kernel and stock recovery image?
2. How to restore this backup so that if I have to send my phone to the warranty, I wont have any problem and LG wont find out that I flashed a custom rom/kernel/recovery.
3. I saw that if I install a recovery rom and then install a custom rom, after each boot, the recovery image e flashed with the stock one (/system/recovery.img). Is this true?
4. I saw a tutorial to install the stock rom:
This will install the stock rom, the stock kernel and stock recovery image? And this will be like a fail safe? For an exemple, if I brick my phone, I can always use this and revert any changes and unbrick my phone?
Thanks for all the help you can give me.