Help - Understanding the Custom Rom Installation Process - Android Q&A, Help & Troubleshooting

Hi
I want to install a custom rom to my alcatel one touch p310x 2GB :
I have rooted the tablet and made a backup using MtkdroidTool
After reading some articles about how to install custom rooms I have some trouble to understand the process :
1- What's the difference between rooting and unlocking the bootloader ?
2- Did my device need to be rooted and the bootloader unlocked to install a custom recovery ?
3-Do I need to install a specific custom recovery for my device or only to use the latest version from any custom recovery?
4- Do I need to install a specific custom Rom version or only to use the latest version from any custom room ?

Rooting is gaining the admin status of the /system partition which allows you to have the ability of greater control of your phone. https://en.wikipedia.org/wiki/Rooting_(Android_OS)
Unlocking the bootloader is removing a security restriction built in that disables the ability to install custom recoveries and kernels. http://www.kingoapp.com/help/bootloader.htm
You must use roms and recoveries built specifically for your phone unless otherwise specificed by a developer for some phones that are basically the same version as another with minor differences. If a developer does not have your phone listed as supported, do not attempt to load, ever. Using a recovery or rom that is not made to boot on your device will almost always result in leaving the phone unable to boot, or even worse, unable to even power on depending on the phone and update attempted.

thank you

Related

Install on unlocked bootloader

Can I install a custom ROM on a device with unlocked bootloader
I use an application for work which checks for rooted roms and one of the checks is if bootloader is locked.
I cant unroot as ALL (including rootcloak plus) has proved to be unsuccessful with the application
jean001luc said:
Can I install a custom ROM on a device with unlocked bootloader
I use an application for work which checks for rooted roms and one of the checks is if bootloader is locked.
I cant unroot as ALL (including rootcloak plus) has proved to be unsuccessful with the application
Click to expand...
Click to collapse
Unlocking is not the same as rooting and vice versa. If your bootloader is unlocked use flash tool (with drivers installed for your device) to flash a custom kernel to your phone. Most kernels add root access. (Check by using a root check app after flashing). With a custom kernel installed, then flash a custom rom via the recovery menu, most likely CWM.
smirnofred said:
Unlocking is not the same as rooting and vice versa. If your bootloader is unlocked use flash tool (with drivers installed for your device) to flash a custom kernel to your phone. Most kernels add root access. (Check by using a root check app after flashing). With a custom kernel installed, then flash a custom rom via the recovery menu, most likely CWM.
Click to expand...
Click to collapse
Fully understand bootloader and rooting. My point is that the application I need to use will check if device has unlocked boot loader
Other thing it checks for is
1) SU
2) number of superuser apps
3) bootloader status
4) busybox files
5) root status
6) if RUM is custom ROM by checking signature
7) build.prop entries to determine if its custom ROM (e.g. releasekeys and testkeys)
Hello everybody!
Im totaly new here and my English is not so good so im sorry about that.
I was flash my st15i and unlock root.When I tipe *#*#7378423#*#* in my phone its sey Bootloader unlocked: Yes
and I flash it with 4.0.2.A.0.62 ,everything work ok but....I can not install 4.0.2.A.84 version in phone update and titanium backup can not acess root.
What should I do,any ideas?
thx
I flash it with 4.0.2.A.0.84 but still cant acess root with titanium backup
zixic said:
I flash it with 4.0.2.A.0.84 but still cant acess root with titanium backup
Click to expand...
Click to collapse
Have you even installed a custom kernel or did you root the phone? If not, root it or simply flash a custom kernel (which automatically roots the device)

[Q] updating to LP on unlocked bootloader

With all the hype on the lp launch, I just realized I have no idea what to do : I got the rom through xpirifirm, and I'm just sitting there like "now what?"
Originally when I got the phone, I created a KK pre-rooted rom and used that on my phone, later on down the line I unlocked the boot loader to use a custom kernel and try different roms, but the pre-rooted rom how-to says it's for "locked" bootloader only, for now I figure I should be fine making the rom following the same process and then flashing the resulting zip to my phone, but I have a few questions :
is this the proper way to do it on UB ? to create a prerooted rom and use the zip file to flash the LP update ?
will I keep my root if I do this ? (I'll use the latest SU binary)
will I have recovery ? (I'll use the latest dual recovery)

Root and recovery on Lollipop

Managed to get my hands on a cheap second hand TabZ in good condition. And although Sony's Lollipop firmware looks and feels nice I really want to go the custom Rom road as it allows me to tinker more with it.
Now is when the situation gets complicated as it seems there is a plethora of versions, some more complicated then others, to root the device and install a recovery on it. My questions to you, anybody willing to clear these things out, are:
1. Does the bootloader need to be unlocked in order to obtain root for a tablet already running Lollipop? (I read in one thread that starting with Lollipop this might not be required anymore)
2. What is the best way of getting root?
3. How do you install recovery? I understand the XZDualRecovery to be really popular but some of the instructions can be mind boggling (the use of Kernel Builder to repack the kernel in order to replace the built in recovery with XZDualRecovery). Is this the same as flashing a recovery every time I install a new ROM before rebooting if I want to still have one (basically there is no permanent one, but changes with the rom you are flashing?! )
Any help would be much appreciated as I am stuck as I have never been with rooting and installing recovery on a device. Thanks!
1&2. Bootloader is not directly connected with Root. Unlocked bootloader allows you to install custom ROMs like FXP, cDroid, CyanogenMod and others.
For rooting stock Sony Rom rooting doesn't usually need bootloader unlock.
For example for 4.4.4 and 5.0.2 firmwares KingRoot will help you to root device. For other firmware, other tools exist.
3. For installing Custom Roms like FXP, CyanogenMod and others you need unlocked bootloader.
XZDualRecovery is mainly used for stock Sony Rom and based on stock roms.
For custom roms you can flash TWRP recovery to FOTA partition which will be permanent and will allow you to install any custom rom.
Also before bootloader unlock, get root and Backup TA partition of your device.

Clarify if my direction is correct to flash custom ROM

Hi all,
I am a total newbie in this game. This is my first attemp to flash my China brand tablet because of its choppy rom. However I hope someone would point and clarify if my direction is correct (whatever in my mind now) for what I am going to do.
Goal: To flash custom ROM on 麦柴 M10 model (MT6753)
Steps:
1) Unlock bootloader (DONE)
2) Flash custom recovery (TWRP)
3) Flash custom ROM (prefer LineageOS or whatever stable ROM which made ready available for MT6753 device)
Sub-step: Unlock bootloader
a) install USB driver for my device
b) install adb and fastboot drivers
Sub-step: Flash custom recovery (TWRP)
a) Find TWRP recovery made available for MT6753/MT675X/MT67XX device
b) Port the recovery
Sub-step: Flash custom ROM
a) Find a custom ROM that has already made available to MT6753/MT675X/MT67XX device
b) Port the ROM
At the moment, I have unlocked the bootloader but it is non-rooted (I had several tried before but fail, it was when the bootloader still in locked state). Am I fit to proceed Step 2: Flash recovery given the position I am currently in?
PS. Moderator, if I posted at the wrong section please help to move to the appropriate one, thanks.

Do i need to root my phone in order to install custom ROM?

I have a Xiaomi Mi 4 phone. android version is 7.1.2 and my phone manufacturer is not likely to release android 8 update for my model. So i plan to install android 8 using custom rom. I read steps to install different custom ROM's and i have some doubts.
Do i need to root my phone in order to install custom ROM or is if sufficient if i just unlock bootloader and install TWRP recovery? Please note rooting phone is a step mentioned AFTER unlocking bootloader and installing TWRP recovery in order to root phones but i am just wondering if this rooting step is necessary at all if my purpose is only installing custom ROM.

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