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Can anybody explain the difference between the Android Bootloader and the Boot ROM?
More specifically, I'm talking about the Nexus 7 device for now.
If I understand correctly, the boot rom is permanently burned onto a chip and is the first piece of code executed during the boot process.
The next stage, I think, is the bootloader. Is this called the Android Bootloader on Nexus 7 devices? Is 'fastboot' the protocol this bootload supports? (and most android bootloaders?)
During a Nexus OTA update it flashes new bootloader code so apparantly this bootloader can be changed. What happens if you brick the bootloader code/partition?
Is U-Boot an alternate bootloader to the 'Android Bootloader' ?
I'm trying to 'convert' my Nexus 7 into a different tablet but I'm trying to understand all of pieces to see what needs to be modified, etc. I've already built a headphone (3.5mm) to serial cable so I can monitor the bootloader (boot rom?) messages but I need to modify the kernel command line to see the kernel
messages, etc.
Thanks for any help
Hello guys !
I recently bought an Archos Core 101 3G Ultra, with Android 9 Pie.
My objective was to install a GNU/Linux Debian threw the SDE bootloader.
I'm new to this game, but I'm quite persistent. Sadly, all the documentation I can find is largely outdated (Including here. ).
I spent a lot of hours searching, and learned a lot of thing, but I'm finally stuck, and need help.
Actually, everything is damned locked. I think the problem comes more from Archos firmware than Android itself.
I did activate developer settings in Android, checked usb-debugging, oem-unlock and reboot (several times), but it seems not passed to lower software layers.
Besides, when I reboot Android, he tells me he could'nt update settings.
When I go to recovery (Vol + & power), device is unauthorized for adb, and invisible to fastboot (Even after declaring udev rules on my desktop. ).
But if I boot Android, adb works, and if I send "adb reboot bootloader" command, I can see my device in fastboot opened this way.
But I can't execute anything : he always sends me "command unknow" error message.
So no "fastboot oem device-info", neither "fastboot oem unlock" or "fastboot oem unlock-go". I tried "adb root" but without success. When I do "abd shell", most folders are forbidden to me : no mv, no mkdir, not even ls.
I tried to follow several unlock/root tutorials, including the two ones we can find here for Archos gen 9 :
https://forum.xda-developers.com/showthread.php?t=1542058
https://forum.xda-developers.com/showthread.php?t=1653566
But for all the reasons detailed above, they are impossible to archieve (Can't push anything for example).
Anyway, when I do "fastboot getvar-all", I can see my bootloader is locked and protected.
Any idea ?
Days of searching, and one hour after finally deciding to ask question, situation evolves.
Well... seems was bad command : not "fastboot oem unlock", but "fastboot flashing unlock". Bootloader unlocked, Android wiped.
But I'll see next later : I'm frackin' tired, need gaming !
Well well well... unlocking boot loader did not change anything.
I can't install TWRP : no working release for my device.
I tried to play it hard with Magisk : no A/B but system root install. But they soon ask me to extract and modify my recovery partition.
Impossible : I don't have access to such folders.
Seems my device is too recent, or maybe not known enough so I can find stock images on Internet.
Well I'm stuck.
Any idea before I break the tablet into smal pieces on my desk (Or offer it to my mother : she will be satisfied with android... ) ?
To be more acurate (Even if I doubt it will change anything. ) : if anybody has an Archos Core 101 3G Ultra recovery stock IMG, I'd be grateful =D...
Hi! My name is Bautista.
This is my first post well explained, I already asked this question before but I did not express myself well (I hope to do it correctly in this attempt)
My problem happens with my Samsung Galaxy A01 SM-A015M, Running on OneUI 2.0/Android 10 with 2gb of ram, a Snapdragon 439, the stock rom/firmware and 32GB of storage, from Argentina.
Things I tried so far, and didn't work for me:
Unlocking the bootloader by following the Gearallnews and Cyanogenmods guides to the letter.
When trying to unlock the bootloader with the guides on the aforementioned pages, when starting the device a sign should appear saying that the bootloader is unlocked, which did not appear.
The device started correctly in the process to configure the device the first time it is turned on, connect the wifi as the guides said. Followed by that I went to the developer options and the option "Oem unlock" was still activated and in blue (which should not happen, it should appear grayed) I heard that some Samsung devices with snapdragon processors had a bootloader that cannot be unlocked
Unlocking the bootloader using ADB AND Fastboot. (ADB detects my device fine, but fastboot doesn't detect it at all)
Using Fastboot from Windows 7, Windows 10, and Kali Linux.
Installing TWRP.
Use rooting apps. (the ones that appear on the XDA rooting page)
What I am going to with this thread, is:
Can my device's bootloader be unlocked? And if so, how?
If the bootloader cannot be unlocked, how can I root or install TWRP?
Please, if you don't understand something or need more information, let me know by replying to this thread or sending me a private message.
Look inside here.
jwoegerbauer said:
Look inside here.
Click to expand...
Click to collapse
it's the same as Gearallnews and Cyanogenmods guides, i already did that, it dont work
Like the original poster I also have a Samsung Galaxy A01 SM-A015M/DS, OneUI 2.0/Android 10, 2GB ram, 32GB storage, Snapdragon 439, stock firmware (TPA) Panama. I have gone through all the aforementioned procedure and the bootloader does not unlock. There is no bootloader unlock warning on reboot and the OEM Unlock in developer option does not grey out. Does the Snapdragon processor not allow bootloader unlock or is anyone aware of a solution. Thanks for any assistance.
@mullerh
If in Settings -> Developer Option the option "OEM unlock" is present then unlocking the bootloader obviously isn't denied by OEM/Carrier.
But you can check it at your own:
Code:
adb devices
adb shell "getprop ro.oem_unlock_supported"
jwoegerbauer said:
@mullerh
If in Settings -> Developer Option the option "OEM unlock" is present then unlocking the bootloader obviously isn't denied by OEM/Carrier.
But you can check it at your own:
Code:
adb devices
adb shell "getprop ro.oem_unlock_supported"
Click to expand...
Click to collapse
Thanks for your response and assistance. The command:
adb shell "getprop ro.oem_unlock_supported" returns a 1
I googled it but found no clarification but I assume that means it is supported.
Therfore there is something else that is blocking the bootloader from unlocking from the unlock mode screen and just prior to reset.
There is also no unlock bootloader warning during the reset.
The more I have Googled this problem the more it seems to indicate that many newer Samsung phones released in North/Latin America with Qualicom Snapdragon 439 processors, have the the bootloaders locked down with a new "security" feature called SecureBoot. Would be interested in getting the experience of others. Thanks
mullerh said:
Thanks for your response and assistance. The command:
adb shell "getprop ro.oem_unlock_supported" returns a 1
I googled it but found no clarification but I assume that means it is supported.
Therfore there is something else that is blocking the bootloader from unlocking from the unlock mode screen and just prior to reset.
There is also no unlock bootloader warning during the reset.
The more I have Googled this problem the more it seems to indicate that many newer Samsung phones released in North/Latin America with Qualicom Snapdragon 439 processors, have the the bootloaders locked down with a new "security" feature called SecureBoot. Would be interested in getting the experience of others. Thanks
Click to expand...
Click to collapse
Hi! Did you manage to find a way to unlock the bootloader?
I have not been able to unlock the bootloader on this SM-A015M/DS (Latin American) model with Snapdragon processor. I have done a lot of searching but found little info except articles stating Samsung had gone through some extra effort to secure their latest phones. That also means I can not root it. I was hoping to get some feedback from other who may have had a better experience,
have you tried using the twrp app to install twrp?
i had an old galaxy grand prime which was impossible to unlock, but the app worked without issues
the only thing i had to pay attention is to turn it off right before ir reboots after installing and then loading into recovery
letting the mobile startup without doing this overrieded the command to install twrp
Thanks for your response. It is my understanding (I could be wrong) that before TWRP can be installed the Bootloader needs to be unlocked. The older Samsung usually allowed the Bootloader to be unlocked even if there was difficulty in rooting them. It appears that some of the newer Samsung's with the Snapdragon processors have added an additional security feature called SecureBoot which blocks the Bootloader from being unlocked.
Does anyone have a definitive answer for how to turn the bootloader on? I recently purchased a SM-A015M/DS and didn't have issues with the OEM bootloader option appearing in the options. But when I enter fastboot mode it says my device status is locked. I can't work out if that means it's locked or not.
For what it's worth, when I flashed the firmware onto the phone in the first place, I had to enable the developer option manually- I did this by booting into download mode and then a long press on the volume up button when prompted by the menu. I don't see why this wouldn't work for other devices. There are youtube videos that explain in greater detail if you haven't tried this yet.
Newiser7 said:
Does anyone have a definitive answer for how to turn the bootloader on? I recently purchased a SM-A015M/DS and didn't have issues with the OEM bootloader option appearing in the options. But when I enter fastboot mode it says my device status is locked. I can't work out if that means it's locked or not.
Click to expand...
Click to collapse
Enabling OEM unlock option in Developer options does NOT UNLOCK the bootloader. Once you enable the OEM unlock on your device, the unlock ability flag is set to 1, which will allow users to use the fastboot flashing unlock command, the command what starts the "unlocking the bootloader" procedure.
FYI:
After the command is executed, you will see an option for bootloader unlock on your device’s screen.
Use the volume buttons to move up and down and select the option to unlock the bootloader.
A prompt will pop up, asking for confirmation. Use the power button to confirm your selection as yes, and you are done.
The phone will now reboot to fastboot mode. Enter the command “fastboot reboot,” and it will boot into PC.
jwoegerbauer said:
Enabling OEM unlock option in Developer options does NOT UNLOCK the bootloader. Once you enable the OEM unlock on your device, the unlock ability flag is set to 1, which will allow users to use the fastboot flashing unlock command, the command what starts the "unlocking the bootloader" procedure.
FYI:
After the command is executed, you will see an option for bootloader unlock on your device’s screen.
Use the volume buttons to move up and down and select the option to unlock the bootloader.
A prompt will pop up, asking for confirmation. Use the power button to confirm your selection as yes, and you are done.
The phone will now reboot to fastboot mode. Enter the command “fastboot reboot,” and it will boot into PC.
Click to expand...
Click to collapse
FYI:
Samsung devices do not support fastboot command, you use Odin or Heimdall to flash what you need.
The answer you provide is misleading
mullerh said:
FYI:
Samsung devices do not support fastboot command, you use Odin or Heimdall to flash what you need.
The answer you provide is misleading
Click to expand...
Click to collapse
You are right: I was mistaken.
Thank you for clarifying that the bootloader is still locked. But how can I unlock it? Odin will let me flash the files, but I keep getting AUTH errors when I try to flash magisk patched files to root the phone. I'm assuming this is because the bootloader preventing the files from transferring. Is there a way to unlock it using ADB without fastboot, or a way using Odin? It seems crazy that unlocking the bootloader is enabled but I am still unable to actually unlock it.
I have also tried the CROM Service app (couldn't get it to install on my phone, error 3003 with ADB install), as well as the bootloader unlock method where I boot into download mode, hold the volume up key, and unlock the bootloader that way. I have done the latter at least 5 times and the bootloader is still locked. Ridiculous.
This prop apparently only confirms that the phone supports being unlocked, not that it is actually unlocked.
adb shell "getprop ro.oem_unlock_supported"
Check a few others, also see the official docs.
sys.oem_unlock_allowed
androidboot.flash.locked (the docs say this, but I think Samsung uses something different)
ro.boot.flash.locked
ro.boot.other.locked
Maybe also check these:
ro.boot.verifiedbootstate
ro.boot.veritymode
The docs indicate that the verifiedbootstate should be orange if the bootloader is unlocked. I don't know much about it, though.
You can always use grep to search for any interesting values, like "lock" or "boot" or "flash":
adb shell getprop | grep lock
adb shell getprop | grep boot
adb shell getprop | grep flash
Maybe report any interesting values you have with and without OEM Unlock checked. Maybe someone smarter than us will find it useful.
I would really like to see an A01 root happen, it's such an affordable and accessible device for all sorts of things. Great as a backup device or for a project. You think someone would've released some goods for it by now. It's been out all year.
And for the 16GB model, it's absolutely terrible because Samsung eats up so much space, then has the nerve to remove the Adoptable Storage feature. So even if you get a fast SD card, you can't install apps on it. Other than that, it's a perfectly serviceable phone. I would think with root we could get Adoptable Storage working.
To summarize what has been previously stated the Samsung Galaxy A01, version SM-A015M/DS is the Latin American version of this cellphone. This cellphone has a Snapdragon processor. This version is very similar to the versions (also Snapdragon processors) used by some US Carriers. Many current versions of Samsung cellphones have an additional security feature called "SecureBoot" which blocks bootloader unlocking. Some say this features was added at the request of US Carriers
The Asian version of the A01 has a Exynos processor. It is my understanding that with these it is very easy to unlock the bootloader and root the phone using the usual conventional methods. The Asian variant unfortunately does not cover some of the wireless bands used in the US/Canada/Latin America.
I have a Samsung Galaxy A01 SM-A015M/DS, OneUI 2.0/Android 10, 2GB ram, 32GB storage, Snapdragon 439, stock firmware (TPA) for Panama.
My research indicates that there is not yet an available bootloader unlocking and easy root method for this (A01) phone. For some other current Samsung models there does appear to be a method of flashing certain custom ROMs without a bootloader unlock but they appear to come with problems which include loss of some cellphone functions and a reduction in the charged battery life. So it seems hardly worth it.
It also appears that it is current well known that all current Samsung phones with Snapdragon processors have not allowed bootloader unlocking and rooting due to the enhanced security feature.
At this time we can only complain and/or not buy any additional Samsung phones
Perhaps with time skillful developers will come up with a method to solve this problem with this inexpensive A01.
Please provide any new or updated info if you have it.
Any solution for rooting Galaxy A01 ?
I use A015f region SER (Russia) In Russia, too, the device is locked (bootloader) of course, give any solution
One thing I know is that a fellow SM-M015f, which is almost identical, which is with the same Snapdragon 439, except for the battery capacity and screen size and gigabytes of internal memory, successfully unlocks and gets Magisk root.
this phone actually has a fastboot mode, from recover mode select reboot to bootloader, it will boot to fastboot mode,but ive still been unsucessful in getting fastboot mode to work, devices manager reports device error,
I can start the unlock proccess.
But after it is done and the data is wipped,
It keeps locked.
Sad
Greetings all,
I am having trouble attempting to root or even unlock the bootloader on my V60 (LM-V600TM), Android V11. Many guides online seem to gloss over needing the bootloader unlocked before root. TMALSS; I'm not sure if the non-international version can be bootloader unlocked and/or if I can root without needing this. Long version of what I've tried is below:
When following this guide on xda using KDZ,
I am getting stuck at Section 11.1.2:
Code:
C:\adb-platform-tools>fastboot flash frp frp.img
Sending 'frp' (512 KB) FAILED (remote: 'Download is not allowed on locked devices')
fastboot: error: Command failed
Thus to unlock the bootloader, I am following a guide from TWRPupdate:
It says to perform 'adb reboot bootloader' and then 'fastboot oem device-id':
Code:
C:\adb-platform-tools>fastboot device-id
fastboot: usage: unknown command device-id
My phone only reboots into normal mode whenever running reboot bootloader command within ADB.
I can run fastboot commands when I run 'adb reboot fastmode' but I don't believe this is true fastmode. As I have tried everything mentioned here, such as cables or different computers. Essentially most fastboot commands I've tried do not work except for showing my device as listed / connected.
I have also tried the drivers from LG / Google / ADB separately. And on 2 computers.
Is it possible that I don't have rescue mode or a bootloader still? As I get a black screen when entering recovery mode (but my computer recognizes A device), but adb nor fastboot does. I used to see the recovery screen logo, but I stopped seeing this screen either after updating to Android V11 or reading/backing-up the partitions in QFIL.
In last resort, I have tried rooting via patching the boot image using Magisk v23. I downloaded the firmware for my carrier, converted the KDZ to DZ via Python, and extracted the boot.img_117638 file. Given the file is 0 bytes with nothing in text edit, I still converted it to an img file. But in the kdztools android app, when I select this image file and run, I get:
Code:
!Invalid input file
!Installation failed
I'm guessing the boot.img file should have some data in it. But I'm not sure this method would even work due to the fastboot issues, especially with 'download to device' errors.
-------
I'm just at a standstill on what to even try next. I don't see many people having this much trouble unlocking/rooting their v60. Did the OTA Android v.11 break the root-ability?!
PS: Debugging and OEM unlock are both set in developer options. I can also list drivers used if need.
Thanks for the help in advance!
While digging I also found a post by alexenferman whom managed to use QFIL to root many older ZTE smartphones. They state it may but likely won't work on newer flagship phones. It's a great tutorial I'll have to try soon, but is there a reason it likely won't work here?
kyij said:
Greetings all,
I am having trouble attempting to root or even unlock the bootloader on my V60 (LM-V600TM), Android V11.
When following this guide on xda using KDZ,
I am getting stuck at Section 11.1.2:
Code:
C:\adb-platform-tools>fastboot flash frp frp.img
Sending 'frp' (512 KB) FAILED (remote: 'Download is not allowed on locked devices')
fastboot: error: Command failed
Click to expand...
Click to collapse
Why are you even in section 11.1? You have a v600TM ... a TMobile version. Not a Verizon version. Stop. Just stop. Jump to 11.2.
If you have gotten the engineering bootloader in place, you should be good to go with 11.2.
[NG]Owner
NGOwner said:
Why are you even in section 11.1? You have a v600TM ... a TMobile version. Not a Verizon version. Stop. Just stop. Jump to 11.2.
If you have gotten the engineering bootloader in place, you should be good to go with 11.2.
[NG]Owner
Click to expand...
Click to collapse
Haha, I remember reading that and still continued
I am on Verizon myself using this TM model. I know the phone was unlocked to the point where I could use it with Verizon. I even got 5g using my old 4g sim card.
Anyhow.. I have tried using that command already, and get the same 'command not supported issue'.
Code:
C:\adb-platform-tools>fastboot devices
LMV600TMc40cxxxx fastboot
C:\adb-platform-tools>fastboot oem unlock
FAILED (remote: 'Command not supported in default implementation')
fastboot: error: Command failed
Again have tried different computers and cables as I've read fastboot can be pretty picky too.
Did you select/enable OEM unlock within the Developer Options under Settings/System?
[NG]Owner
NGOwner said:
Did you select/enable OEM unlock within the Developer Options under Settings/System?
[NG]Owner
Click to expand...
Click to collapse
Yes I do, I have turned it off and back on as well.
Well then at this point, I'm tapped out. Smarter folks than me will need to step in and take up the mantle.
[NG]Owner
I ended up posting a form to reddit where about 10 people insisted I did something wrong, and with little surprise -- I did.
I did not flash the engineering bootloader after saving a copy.
Makes a lot more sense since it seemed like a lot of steps to backup without actually doing anything
Thanks NG for the help too!
are you success to unlock bootloader yet. if no i will show you
adb reboot fastboot> select reboot bootloader on your phone> fastboot oem unlock
ahsvanz
try
C:\ADB >fastboot devices
C:\ADB >fastboot OEM device-info
etc
replacing
C:\ADB with where ever you fastboot file is located
I too am having the same issue.
I recently wanted to try Android 12, I took a chinnese version of it and my phone is unusable, literally all chinnese.
I want to downgrade, I enabled Debugging and Oeam Unlock in Dev options but I get the ''remote: 'Flashing Unlock is not allowed"" when I try to fastboot oem unlock, I tried different USB ports, I keep updating all my drivers for ADB but nothing is working. I'm panicking a bit cause I don't have a phone to use, and not many people work with ONEPLUS in my country.
If someone has an answer, please save me lol
slimmynine said:
I too am having the same issue.
I recently wanted to try Android 12, I took a chinnese version of it and my phone is unusable, literally all chinnese.
I want to downgrade, I enabled Debugging and Oeam Unlock in Dev options but I get the ''remote: 'Flashing Unlock is not allowed"" when I try to fastboot oem unlock, I tried different USB ports, I keep updating all my drivers for ADB but nothing is working. I'm panicking a bit cause I don't have a phone to use, and not many people work with ONEPLUS in my country.
If someone has an answer, please save me lol
Click to expand...
Click to collapse
have you tried the code above ??
cant you just download the official original firmware and flash that ? im not familiar with the oneplus flashing techniques, ive always had samsungs except for the htc evo 3d back in the day
I tried them all, nothing seems to work
I'm stuck at 'Flashing unlock is not allowed'. I've set up everything I need to in Developer Options, I made sure they're all enabled.
It's really weird, could it potentially be a software issue? The software itself will not allow me to unlock OEM even though the check is turned on?
slimmynine said:
I tried them all, nothing seems to work
I'm stuck at 'Flashing unlock is not allowed'. I've set up everything I need to in Developer Options, I made sure they're all enabled.
It's really weird, could it potentially be a software issue? The software itself will not allow me to unlock OEM even though the check is turned on?
Click to expand...
Click to collapse
how does the one plus flash firmware ? for samsung we use a tool called odin, do you not have a similar tool for your device ?
I don't recall having any toolkit like that, but in order for the toolkit to work.. do you need to have an unlocked bootloader?
Cause the main issue is that I can't unlock it.
i dont think so, if your flashing an official firmware, but for your device i cant be sure of that
?
did you try running your commands as an su , is your device rooted ? you could try sideloading an update.zip maybe
what does it say when you flash this command ? true, true false ?
C:\ADB>fastboot OEM device-info
maybe this will help https://forum.xda-developers.com/t/...us-2-back-to-stock-100.3269543/#post-64279667
slimmynine said:
I too am having the same issue.
I recently wanted to try Android 12, I took a chinnese version of it and my phone is unusable, literally all chinnese.
I want to downgrade, I enabled Debugging and Oeam Unlock in Dev options but I get the ''remote: 'Flashing Unlock is not allowed"" when I try to fastboot oem unlock, I tried different USB ports, I keep updating all my drivers for ADB but nothing is working. I'm panicking a bit cause I don't have a phone to use, and not many people work with ONEPLUS in my country.
If someone has an answer, please save me lol
Click to expand...
Click to collapse
yeah i think some phone makers lock down the bootloader, like its unlocked but when i try to flash a gsi it says device locked state
jamsandpeabug said:
alcatel has a program to download and install firmware but the device is not listed, cannot find fw on the net
Click to expand...
Click to collapse
OK try
c:\adb
Adb fastboot oem device-info
Replacing
C:\adb
With where ever your fastboot is located
Just to check if your device is showing is oem locked or unlocked, it will display with a true or false option. I can't really advise to much as I don't have experience with that device
You could also try
fastboot oem unlock_critical
Not sure if that will work for your device though
Idk what else to recommend, are you stuck at boot ? Can u boot into recovery mode ? Do u have an ext sd card slot
OT-6025D | GSMSERVERPRO
gsmserverpro.com
Is that your firmware
Alcatel 1s Flash File Download [Stock ROM or Firmware
You can Download latest flash file and flash tools for Alcatel 1s phone here. Original stock ROM or Firmware available for free.
mobilereset99.com
Have youlooked at that
if you can confirm your phone has a mtk chipset use mtkclient to bootloader unlock it https://github.com/bkerler/mtkclient
otherwise youre out of luck
But
jamsandpeabug said:
im not stuck at boot, i want to flash gsi but it says device is in locked state even with oem unlocked in dev options, adb debugging enabled etc , and just wont let me flash.. its starts flashing and then fails due to locked state
Click to expand...
Click to collapse
If the flashing starts, and fails, the os would be overwritten and you wouldn't be able to boot. So what you mean is the process trys to start but fails, right yh then I don't know what else I can say to try and help, let's hope mtkclient is an avenue you can pursue
MOD ACTION:
Thread closed since OP has no content.