Hi,
I'm wondering how I could make my phone as safe as possible without losing the benefits of a rooted custom ROM. In particular, I have a few questions about locked bootloaders, recoverys and flashing.
Right now, my phone has a unlocked bootloader, TWRP recovery and a rooted custom ROM. I was thinking about flashing the stock recovery and locking the bootloader. From what I gather, I could still temp-flash non-signed recoveries (like TWRP; to flash updates for my ROM) as long as I have root access to the phone (http://android.stackexchange.com/qu...implication-of-having-an-unlocked-boot-loader)
Is that still right on Android 4.2.2?
This would make it a bit harder for someone who finds my phone to get all the data - to get access to the phone, he would have to guess my PIN or unlock the bootloader, which wipes the phone.
I have this PadFone S for over a week, and it's my 5th android device, but certainly the 1st one having a locked bootloader. So far I have read how to flash stock firmware, how to root and unroot, which requires unlocking bootloader first using CrowLock, how to install CWM and CM12 etc. I haven't try anything yet (still uprooted, and my bootloader is still unlocked).
One question still unanswered, is there any way to lock the bootloader after it's unlocked ? Perhaps by using the CrowLock app, or simply flashing stock firmware ? I need to be assured that any changes I do is reversible.
Thanks in advance
I too purchased the Padfone S and have the same question. Also, does anyone know if flashing crowlock will void the warranty of the phone? Can someone who has unlocked their bootloader using crowlock paste the output of "fastboot oem device-info"?
Does Asus' bootloader not check the signature for the recovery partition before booting from recovery? Given that everyone is flashing the recovery after rooting and running crowlock from the recovery, it seems so, but I'm not sure.
Anyone know if the bootloader's source code is available? I know it's based on the littlekernel, but I'm not sure which version it was built from.
Bump! I need the answer too.
I was wondering if the S6 on Vodafone in the UK came with a locked bootloader, and if so how difficult was it to unlock? I have an S7 Edge on pre-order, and presume that would come locked too if the S6 did. I can't live without root. Cheers.
No one has an S6 Edge on Vodafone?
Beefheart said:
I was wondering if the S6 on Vodafone in the UK came with a locked bootloader, and if so how difficult was it to unlock? I have an S7 Edge on pre-order, and presume that would come locked too if the S6 did. I can't live without root. Cheers.
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Click to collapse
Seems so, as I have had the same problem by installing MM 6.0.1 firmware with the UK csc code VOD (appearing as BTU on phone). The bootloader wouldn't let me flash TWRP through ODIN (sorry, could flash, but not boot into TWRP, stuck on bootloader).
So i took the provided MM 6.0.1. bootloader from Carotix CarHDRom, flashed it together with at the same place provided TWRP for
MM (the old 2.8.7.0/2.8.7.1 or even new TWRP 3.0 provided on the homepage of TWRP.me , won't work on MM) throught ODIN.
Within TWRP flashed hybridmax's S5E-AELKernel_MM...kernel 1.5 and superSU beta 2.67 (previosly stored/copied to the mobile device) and rebooted - rooted and all working fine.
Take a look at : http://forum.xda-developers.com/galaxy-s6-edge/development/rom-carhdrom-1-t3111519
coco722 said:
Seems so, as I have had the same problem by installing MM 6.0.1 firmware with the UK csc code VOD (appearing as BTU on phone). The bootloader wouldn't let me flash TWRP through ODIN (sorry, could flash, but not boot into TWRP, stuck on bootloader).
So i took the provided MM 6.0.1. bootloader from Carotix CarHDRom, flashed it together with at the same place provided TWRP for
MM (the old 2.8.7.0/2.8.7.1 or even new TWRP 3.0 provided on the homepage of TWRP.me , won't work on MM) throught ODIN.
Within TWRP flashed hybridmax's S5E-AELKernel_MM...kernel 1.5 and superSU beta 2.67 (previosly stored/copied to the mobile device) and rebooted - rooted and all working fine.
Take a look at : http://forum.xda-developers.com/galaxy-s6-edge/development/rom-carhdrom-1-t3111519
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Click to collapse
Did you have the OEM Unlock toggle in dev options?
Beefheart said:
Did you have the OEM Unlock toggle in dev options?
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Click to collapse
Do not know if or not.
Just flashed first the original VOD 6.0.1 fw and then tried to have a working TWRP recovery, but could't boot into TWRP recover, the original bootloader did not let me... this for, bootloader and twrp from carotix (and eventually his provided kernel and/or rom) , and everything goes fine.
coco722 said:
Do not know if or not.
Just flashed first the original VOD 6.0.1 fw and then tried to have a working TWRP recovery, but could't boot into TWRP recover, the original bootloader did not let me... this for, bootloader and twrp from carotix (and eventually his provided kernel and/or rom) , and everything goes fine.
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Click to collapse
My understanding of a locked bootloader is that you can't flash anything that isn't official, including a replacement bootloader, which you indicate you did successfully. Otherwise Verizon Samsung customers would simply flash a new bootloader over their locked one. Ever TWRP wouldn't have flashed, it would have kicked out an error in Odin as you made the attempt because the bootloader wouldn't have allowed it. It sounds like your attempt at flashing it finished successfully, but just wouldn't boot into it. I'm wondering if this was caused by something other than the bootloader being locked.
Beefheart said:
My understanding of a locked bootloader is that you can't flash anything that isn't official, including a replacement bootloader, which you indicate you did successfully. Otherwise Verizon Samsung customers would simply flash a new bootloader over their locked one. Ever TWRP wouldn't have flashed, it would have kicked out an error in Odin as you made the attempt because the bootloader wouldn't have allowed it. It sounds like your attempt at flashing it finished successfully, but just wouldn't boot into it. I'm wondering if this was caused by something other than the bootloader being locked.
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All possible. However, sometimes we'll just have to give it a try, by using the information and software available. I do have to mention, that my mobile is/was provider-free (not locked to a specific provider). But even a locked mobile can be handeld to get
in free and unlocked. In such case, this should be done first and after that the upgrade to rooted MM and ROM, etc.
No worries, cheers for the reply. I'll wait until I receive it then simply return it and cancel the contract if it's locked.
Hi, i had the same problem. I flashed TWRP, but i could not boot to TWRP. I found that I also have locked bootloader. No OEM Unlock toggle in dev options.
Login on this site
https://findmymobile.samsung.com/login.do
and try Disable Reactivation lock if you can.
vrzy007 said:
Hi, i had the same problem. I flashed TWRP, but i could not boot to TWRP. I found that I also have locked bootloader. No OEM Unlock toggle in dev options.
Login on this site
https://findmymobile.samsung.com/login.do
and try Disable Reactivation lock if you can.
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Click to collapse
I've not received my phone yet, but this doesn't look good. Were you able to disable the reactivation lock on your S6? Or, alternatively, like coco722, were you able to simply overwrite the bootloader? I'm not concerned with Knox or Vodafone's warranty, as long as I'm able to overcome the locked bootloader and root.
Just that
please help me i tried to install a custom before but i got a bootloop and i don't know if that's the problem
Just say yes or no
If you want to install custom roms, you must unlock bootloader.
It actually depends on the phone. You can install roms on some phones with locked bootloaders, such as some Sony Xperia phones. However, generally, an unlocked bootloader is required. I can't understand why you would post this without including any pertinent info such as what phone, which update you are, what rom you tried, what recovery you are using, etc.
I have tried for multiple hours to get fastboot and ADB to work with my S6 Edge but it is not working. I suspect I might need to try older Samsung drivers (I only tried the latest ones as far as I remember). I wanted these tools in order to check if my bootloader was unlocked so that I wouldn't brick my device if I tried to install a custom ROM and TWRP. Anyway I followed a video and installed TWRP on my phone and installed Lineage OS Android 10 without checking the bootloader since the guy in the video did not mention doing so and still installed the custom ROM and TWRP. It is working fine. I know it is most likely that since this was possible, the bootloader should probably be unlocked but I just wanted to confirm with more experienced smartphone modders if this is indeed the case. Is it then safe to root my phone without checking bootloader?
Sub-question: If a person were to theoretically attmept to install custom ROM or TWRP or root the phone while the bootloader is locked, would that result in the root failing but the device still being usable or would the attempt result in the device being bricked? IE if the bootloader is locked is it dangerous to attempt to flash software to the phone or will it result in a harmless "failed" message, etc.?
Thank you.