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Re-lock bootloader

hi,
i have asus tf300tg,rooted and unlocked.
there is a way ti re-lock bootloader? i want to restore the tablet to original state when i buied it.

It has been answered here plenty of times, short answer is: No, you can't.

ah...ok...thanks

I have this build out of the box US 9.4.3.30 then the updates is available and I didn't install but instead I did unlock,nvflash,cwm then root. Any advice on what should I do:
- click this update now it will still work or not since I'm already unlocked and might possibly brick my device?
or
- safely install the update but I will still be unlocked?
or
- ignore updates and just flash custom JB ROM?
Thanks!

melvsmeister said:
I have this build out of the box US 9.4.3.30 then the updates is available and I didn't install but instead I did unlock,nvflash,cwm then root. Any advice on what should I do:
Click to expand...
Click to collapse
This means you're still on the ICS bootloader. This is important to note because of your questions below.
melvsmeister said:
- click this update now it will still work or not since I'm already unlocked and might possibly brick my device?
Click to expand...
Click to collapse
Taking the JB upgrade from ASUS is the only way to upgrade the bootloader. Whether you take the OTA upgrade or do it yourself, you will have to perform this step at some point if you want a custom ROM based on the JB bootloader.
melvsmeister said:
- safely install the update but I will still be unlocked?
Click to expand...
Click to collapse
As stated before, you cannot re-lock the bootloader. This includes via ASUS upgrades... your bootloader will remain unlocked.
melvsmeister said:
- ignore updates and just flash custom JB ROM?
Click to expand...
Click to collapse
This will depend on the custom ROM you want to use. Do your research before moving forward either way.

bsaman said:
Taking the JB upgrade from ASUS is the only way to upgrade the bootloader. Whether you take the OTA upgrade or do it yourself, you will have to perform this step at some point if you want a custom ROM based on the JB bootloader.
Click to expand...
Click to collapse
Thanks for taking time to answer my question, I'm planning to use Hydro and I understand that I need to update to JB first. I'm kinda new to TF300 so I'm afraid to mess up so I wonder since JB update is in my notification can I install it or it may brick my device since it was downloaded while I'm completely stock but now my device is unlocked and rooted?
Here's what I'm planning to do:
-Update using the JB OTA in my notification bar
-Install CWM JB compatible
-Install custom rom
OR
-DL the latest JB firmware from ASUS
-Install CWM JB compatible
-Install custom rom
Thanks again for your help!

[Q] unlocked 4.2

i have an unlocked bootloader tf700t waiting for spare cable to install twrp
can someone please answer these questions
will i brick my tablet if i update?
do i update through manual or OTA?
should i install twrp first?
will i lose unlock?
if you could tell me then it would be great. the last thing i want is a brick

hasrussian said:
i have an unlocked bootloader tf700t waiting for spare cable to install twrp
can someone please answer these questions
will i brick my tablet if i update?
do i update through manual or OTA?
should i install twrp first?
will i lose unlock?
if you could tell me then it would be great. the last thing i want is a brick
Click to expand...
Click to collapse
If you do everything correctly, you won't brick your tablet.
Since your bootloader is unlocked, you won't get the OTA update, so you'd have to install it manually. AFAIK you need root to manually install an OTA update (by copying the dlkpkgfile to /cache and creating the corresponding command file), so it's easier to install TWRP first.
The bootloader stays unlocked when you do all this.

thanks
_that said:
If you do everything correctly, you won't brick your tablet.
Since your bootloader is unlocked, you won't get the OTA update, so you'd have to install it manually. AFAIK you need root to manually install an OTA update (by copying the dlkpkgfile to /cache and creating the corresponding command file), so it's easier to install TWRP first.
The bootloader stays unlocked when you do all this.
Click to expand...
Click to collapse
cable arrived and i now have twrp installed
thanks anyway

To Root? Or to unlock the Bootloader?

I'm on the latest official OTA of 4.2.1
Do I need to unlock the bootloader to root?
I read this http://forum.xda-developers.com/showthread.php?t=2187982
and I'm still not sure whats happening... Do I need to downgrade to root, and do I need to unlock the bootloader to flash TWRP?
I know a bit of what I'm doing as I have rooted and flashed roms on an htc desire and a samsung s2x (t989).
On 4.2.1 theres the occasional hiccup and freezes when I use chrome... Is this still an issue in the custom roms? Also my Settings app crashes when I try to load the "Running" tab in the apps section of settings lol
Can someone point me in the right direct?

Chris9446 said:
I'm on the latest official OTA of 4.2.1
Do I need to unlock the bootloader to root?
Click to expand...
Click to collapse
Well, you have two basic options:
Get root without unlocking.
That is good, if you want to stick with stock ROM, but want to run Apps that need root access.
Or if you don't want to unlock for any reason.
More details in this thread: [JB ROOT] motochopper works! (Root JB 4.1.1 & 4.2.1 with locked bootloader!)
Unlock and install the patched TWRP for -4.2.
This will allow you to root stock ROM easily or you can install custom ROMs.
Be careful: You have the boot loader 4.2, which means you need to pick the patched TWRP for that boot loader and you need to pick one of the ROMs supporting the 4.2 boot loader.
People have bricked their TF300Ts not using the patched TWRP -4.2 version.
There are currently only two ROMs available, but more should be coming soon, as Asus has finally released the new kernel source code.
If your preferred custom ROM supports only the 4.1 boot loader, you need to downgrade. Or just wait a little, as you like...
I read this http://forum.xda-developers.com/showthread.php?t=2187982
and I'm still not sure whats happening... Do I need to downgrade to root, and do I need to unlock the bootloader to flash TWRP?
Click to expand...
Click to collapse
No and yes.
You can use the tool from the tread above just get root; no downgrading, no unlocking.
But yes, if you want to install TWRP, you need to unlock your device first.
You only need to downgrade for installing a custom ROM that does not (yet) support the 4.2 boot loader.
On 4.2.1 theres the occasional hiccup and freezes when I use chrome... Is this still an issue in the custom roms? Also my Settings app crashes when I try to load the "Running" tab in the apps section of settings lol
Click to expand...
Click to collapse
I have not used stock ROM for a while, but generally people report that most custom ROMs run much smoother than stock Asus ROM:

I would suggest downgrading ti the 4.1.1 bootloader, as there is a much larger variety or ROMS available.

f69m said:
Well, you have two basic options:
Get root without unlocking.
That is good, if you want to stick with stock ROM, but want to run Apps that need root access.
Or if you don't want to unlock for any reason.
More details in this thread: [JB ROOT] motochopper works! (Root JB 4.1.1 & 4.2.1 with locked bootloader!)
Unlock and install the patched TWRP for -4.2.
This will allow you to root stock ROM easily or you can install custom ROMs.
Be careful: You have the boot loader 4.2, which means you need to pick the patched TWRP for that boot loader and you need to pick one of the ROMs supporting the 4.2 boot loader.
People have bricked their TF300Ts not using the patched TWRP -4.2 version.
There are currently only two ROMs available, but more should be coming soon, as Asus has finally released the new kernel source code.
If your preferred custom ROM supports only the 4.1 boot loader, you need to downgrade. Or just wait a little, as you like...
No and yes.
You can use the tool from the tread above just get root; no downgrading, no unlocking.
But yes, if you want to install TWRP, you need to unlock your device first.
You only need to downgrade for installing a custom ROM that does not (yet) support the 4.2 boot loader.
I have not used stock ROM for a while, but generally people report that most custom ROMs run much smoother than stock Asus ROM:
Click to expand...
Click to collapse
Thanks was a lot of great information! I rooted my pad and did a few speed optimization things such as re-trimming and now its much smoother! Maybe I'll try a custom rom later but as for now, I'm happy with the updates that Asus provides
cmendonc2 said:
I would suggest downgrading ti the 4.1.1 bootloader, as there is a much larger variety or ROMS available.
Click to expand...
Click to collapse
I'll keep that in mind but I believe there should be more soon as f69m, stated that asus release the kernel for 4.2
I signed that petition in your signature as well

I'd say go for the 'full experience'. Having an unlocked device also allows you to reflash ROMs at will and can also help in a pinch when it comes to backups/restores. Also, if you happen to lose root, it's easily re-rootable through the bootloader.
I'd just be careful of the current TWRP 4.2.1 recovery blob. I just flashed the one released this morning and I am currently getting this weird double screen thing. Best bet is to sit tight at the moment; an update should be out shortly.

danjng said:
I'd just be careful of the current TWRP 4.2.1 recovery blob. I just flashed the one released this morning and I am currently getting this weird double screen thing. Best bet is to sit tight at the moment; an update should be out shortly.
Click to expand...
Click to collapse
Well, stay away from the TWRP 2.5.0.0-4.2 provided in some thread today, but TWRP 2.4.4.0-4.2 should still be working fine.
Sent from my TF300T using Tapatalk HD

[Q] Return to stock?? Root with out unlock??

Hey Guys, I am curious as to if this device can be returned to stock after rooting / unlocking. I'm also wondering if we can root it and flash custom recovery without unlocking the boot loader. Also, once you have changed roms can you go back to the stock rom and ASUS not know?

pryorda said:
Hey Guys, I am curious as to if this device can be returned to stock after rooting / unlocking. I'm also wondering if we can root it and flash custom recovery without unlocking the boot loader. Also, once you have changed roms can you go back to the stock rom and ASUS not know?
Click to expand...
Click to collapse
Not sure I understand your first question. Rooting and/or unlocking does not remove your stock rom...
And no, you must be unlocked to flash custom recovery . And no, it is not possible to relock, so ASUS will know your device has been unlocked,

hmm.
bwiberg said:
Not sure I understand your first question. Rooting and/or unlocking does not remove your stock rom...
And no, you must be unlocked to flash custom recovery . And no, it is not possible to relock, so ASUS will know your device has been unlocked,
Click to expand...
Click to collapse
Lame Do you have to be unlocked to Root and Debloat?

no mate there is a way to root and keep you bootloader locked, its called motochopper and there is a guide on here

Rooting locked is sufficient to remove bloatware.
Sent from my GT-I9001 using xda app-developers app

Rooting

Just got my replacement unit and it came with 4.1.1. Am I safe to start rooting or do i need to check bootloader?
Sent from my EVO using xda app-developers app

Rooting is independent of the bootloader.

Ok. In terms of unlocking and changing the Rom I'd have to verify bootloader or is 4.1.1 only shipped with 1 bootloader?
Sent from my EVO using xda app-developers app

mumbles202 said:
Ok. In terms of unlocking and changing the Rom I'd have to verify bootloader or is 4.1.1 only shipped with 1 bootloader?
Click to expand...
Click to collapse
With the original firmware (before unlocking and installing custom stuff), the bootloader version is always the same as your firmware build (10.4.x for Android 4.1).
Before you install a 4.2-based custom ROM you must update your bootloader to 10.6.x and install a compatible recovery (e.g. TWRP 2.5 or 2.6).

_that said:
With the original firmware (before unlocking and installing custom stuff), the bootloader version is always the same as your firmware build (10.4.x for Android 4.1).
Before you install a 4.2-based custom ROM you must update your bootloader to 10.6.x and install a compatible recovery (e.g. TWRP 2.5 or 2.6).
Click to expand...
Click to collapse
Ok thanks. I used Motochopper to get root just now. To unlock bootloader does it matter whether I go to 4.2 first? If either way it reaches out to Asus what's the difference?

mumbles202 said:
Ok thanks. I used Motochopper to get root just now. To unlock bootloader does it matter whether I go to 4.2 first? If either way it reaches out to Asus what's the difference?
Click to expand...
Click to collapse
On Asus' website it says the Unlock Tool is only for ICS firmware, which is incorrect. You can use it just fine on any JB firmware.
So no, it does not matter if you upgrade to JB 4.2.1 first. But you will loose root though and have to use Motochopper again to regain it.
Sent from my ASUS Transformer Pad TF700T using Tapatalk 4