Question A02s A025G - How to block bootloader to original form? - Samsung Galaxy A02s

Hello I want to block my bootloader, I tried to root my phone, something gone wrong, then I decided to install official firmware again, but my bootloader isn't block I think, can't use Google pay etc. In developer options I can't see OEM Unlock bar. I tried to block bootloader by ADB, but my phone can't be found by this program. This solution with chaning data and time and restarting phone also doesn't work

Related

Unlocking Samsung device

Hi,
I am in fatal situation, where I set temporarily random pattern for lock screen and now I cannot unlock the phone.
The device is Samsung Galaxy S5 Neo, with android 6.0. I cannot factory reset it at all cost.
I tried everything but I have found one solution that I am unable to test, because of errors. Here are my questions:
1. Can I unlock the phone using aromafm? I do not have custom recovery, so there is a message about unsigned zip. I even signed it using sign-app but there is another error about "whole file verification" or something similar and it doesn't start.
2. Can I install custom recovery without unlocking my phone? Do I have to root my phone? If yes, can I root it without unlocking?
3. Debug is disabled, but if I could enable it somehow, then it could work. Is there any method? Like bypass lock screen and turn it on, or anything else...
4. Unlocking phone is as simple as removing one file from the device (gestures.key). But I am unable to do it. Let's say I have access to the phone files, but I cannot delete this file, because of SecurityException. If I root my phone, will I magically gain the permission?
5. Samsung find device is sadly not configured. Can I configure it without unlocking the device?
Thank you for your support.
Regards.

Vodafone VFD 300: Unlocking bootloader not allowed - says it's "secure".

This is a problem, and it's doing my nut. I have a Vodafone Smart Mini 7, which I desperately want to root, to get all of Google's bloatware and the stuff the original network provider put on it.
I've already unlocked it to all networks, but the bootloader is being a PITA. I've done the usual with adb and fastboot, namely put it into USB Debugging, and then done this;
Code:
adb devices
adb reboot bootloader
fastboot getvar all
When I get to the section on the bootloader, it advises me that it's Secure.
I tried to use
Code:
fastboot oem unlock
and when I confirm on the phone that I want to unlock it, I get told that Remote Unlock is not allowed.
I assume that the fact that fastboot getvar all says that the bootloader is secure, means I need some sort of key to get it off. My old network provider don't know where to get it from, my tech team don't know where to get it from and I'm screwed.
Anyone got any ideas on whether I can get round the "secure" part of this, like some way of finding the key for it? Thanks
TootyRooty said:
This is a problem, and it's doing my nut. I have a Vodafone Smart Mini 7, which I desperately want to root, to get all of Google's bloatware and the stuff the original network provider put on it.
I've already unlocked it to all networks, but the bootloader is being a PITA. I've done the usual with adb and fastboot, namely put it into USB Debugging, and then done this;
When I get to the section on the bootloader, it advises me that it's Secure.
I tried to use
and when I confirm on the phone that I want to unlock it, I get told that Remote Unlock is not allowed.
I assume that the fact that fastboot getvar all says that the bootloader is secure, means I need some sort of key to get it off. My old network provider don't know where to get it from, my tech team don't know where to get it from and I'm screwed.
Anyone got any ideas on whether I can get round the "secure" part of this, like some way of finding the key for it? Thanks
Click to expand...
Click to collapse
I have the exact same issue I read some threads and nothing solid has come out of it some say they managed to get root but others say they bricked the phone
Any news on this topic? I too have one i desperately would like to root because it is permanently full and you cant do anything wih it. The Google apps and the apps installed by my service provider take up all the onboard storage space. I downloaded only Whatsapp and Facebook Lite and bam,the phone is completely full and useless as it cant do updates,runs extremely slow and does all sorts of random stuff like restarting on its own etc. driving me utterly insane.

fastboot oem unlock not allowed! even after unlocking it in developer mode

Hello everyone
Recently I've hard reseted my lenovo Phab (pb1-750n) mistakenly before removing my google account and unfortunately I stocked in google FRP lock, I've searched many sites and seen many videos to bypass the FRP with no success.
Finally I found a russian forum that uploaded the Chinese version of device ROM, since the google apps are banned in China therefore updating the ROM from recovery mode succeed (I downloaded ROM and put it in the SD card, then update the ROM from recovery) and device got back alive again. (NO Google NO FRP )
but the second struggle wave slapped my face, (NO google apps NO joy ), for instance I downloaded Gapps and tried to install it by replacing stock recovery with TWRP, so in device, I turned on developer mode by tapping build number many times and turned on USB debugging and oem unlock, see, I turned on damn oem unlock!!! but in the fastboot when I run the
Code:
fastboot oem unlock-go
, the result ends in oem unlock not allowed report and
Code:
fastboot flash recovery TWRP.img
also failed due to the bootloader lock status. BTW international ROM seems to be all in Chines clouds and is not accessible for non Chines people to download them, at least I couldn't do it.
any idea what is wrong in here????? did Chines made ROM to be like that???? any chance to solve the issue???
this happens because you do not unlock the bootloader, just released to unlock
jeangraff30 said:
this happens because you do not unlock the bootloader, just released to unlock
Click to expand...
Click to collapse
well, after updating system to the 6.0.1, problem solved, it seems android 5.1.1 stock ROM for this phablet do not allow to unlock bootloader, I found it in a russian forum, they said so.
anyway thanks for reply.

Question A02S SM-A025G - Google Pay, McDonald's application doesn't work (Root problem)

Hello recently I tried to root my phone, wanting to fix ghost touch, I did something wrong and the phone stopped working, "Only official binary blah blah blah ..." popped up during startup, I decided to reinstall the official stock, the phone started working normally, even ghost touch repaired, I looked at the Root Checker application if I have root, it turned out not, which is all right, but when I want to add the card to google pay or open McDonald's applications, I get a message that the phone is rooted or was somehow rooted modified, what can I do in such a situation, please help me, I tried to install other stocks from other operators and restore the phone to factory settings: _ (
I saw one solution, probably in this forum where someone wrote to enable OEM Unlock and USB Debugging then disable and enable again, something like this, but I don't see OEM Unlock in the developer option, I know that with a failed root attempt, I somehow unlocked this option, but I don't remember how and I prefer someone to help me as best as he can, because I don't want to break anything anymore, I just want Google Pay to start working for me
OEM is probably hidden cause your device isnt older than 7 days. Connect to wifi and enable automatic time and date, than disable once done set the date atleast 7 day forward and oem should appear but you will have to lock ur bootloader before you disable oem and if you are running a custom firmawre make sure to backup data if you wanna go to normal firmware
But I use official firmware from some Samsung firmware site, i think my bootloader is locked, anyway do you have any solves to make work google pay?
I tried to unlock OEM but this solution with data & time doesn't work for me.
Hey, when I go to Google Play Shop there is an information that my device isn't certified, I tried to register my ID Device and still doesn't work can It be a problem, because of that Google Pay doesn't work?
syonox said:
OEM is probably hidden cause your device isnt older than 7 days. Connect to wifi and enable automatic time and date, than disable once done set the date atleast 7 day forward and oem should appear but you will have to lock ur bootloader before you disable oem and if you are running a custom firmawre make sure to backup data if you wanna go to normal firmware.
Click to expand...
Click to collapse
If i wait 7 days OEM option should unlock automatically?
Is it good idea to root this device correctly and use magisk to make google pay work good or for example root this device and then unroot to make work google pay?
Eco24 said:
If i wait 7 days OEM option should unlock automatically?
Click to expand...
Click to collapse
before you do this if odin says you are in custom mode backup all your data before doing this. no it wont automatically, first you have to go to odin mode and hold up for a bit until the screen shuts and shows the question (do you wanna lock your bootloader) you select yes once done if you are on custom it will bring up only odin mode before anything thats where u flash firmware, now that should get rid of the root, and then if u wanna disable oem connect to wifi disconnect date and time unselect automatically and go 7 days ahead and the option will appear.
How to check if i have custom mode and what i have to hold up?? please explain better because i don't know what i have to do

Question Sm-t227u mdm lock/rooting help

Hello! So I am on a journey to attempt to root a Samsung tab a7 lite sm-t227u. So I want to be extremely transparent as to my reason for rooting:
I was given this tablet by my father whom got it from a previous job. When he left the job they never asked for it back, a long with a good bit of supplies he had that he got to keep.
So, I have this tablet, I can get into it as it doesn't have a passcode. I have wiped it by factory reset as well. However, it has IBM's MAAS360 installed and after factory reset AND a firmware flash using odin I still cannot get rid of this maas360 mdm. It is not Knox locked. I can activate developer mode and change all those settings, but I cannot download any apps through the app store at all or enable unknown source app install as those are under an IT block. I also do not have the OEM unlock option in dev options. I've tried the whole changing the date and connecting to wifi, with and without sim card but I cannot get this option to show, nor can I unlock the bootload through fastboot.
I have read that most of the new samsung phones do not have a bootloader unlock option, but from what I can tell that is specific to the snapdragon phones, and this tablet is running a mediatek chip.
Now, if I can remove mdm restrictions without rooting that's great, but I have a feeling that is the only way to properly flash this thing to completely remove the mdm.
I have tried the recovery tar that is posted in this forum but I cannot get it to flash, likely because I still don't have an unlocked bootloader
Have any of you all faced something similar or know of a solution? I may call the company the mdm is managed by and just see if they will remove it from their system, but I find it highly unlikely.
SM-T227U is an American model wich doesn't have the OEM unlocking option, you could unlock using unofficial ways but those are not pretty "stable".
coocooguy246 said:
Hello! So I am on a journey to attempt to root a Samsung tab a7 lite sm-t227u. So I want to be extremely transparent as to my reason for rooting:
I was given this tablet by my father whom got it from a previous job. When he left the job they never asked for it back, a long with a good bit of supplies he had that he got to keep.
So, I have this tablet, I can get into it as it doesn't have a passcode. I have wiped it by factory reset as well. However, it has IBM's MAAS360 installed and after factory reset AND a firmware flash using odin I still cannot get rid of this maas360 mdm. It is not Knox locked. I can activate developer mode and change all those settings, but I cannot download any apps through the app store at all or enable unknown source app install as those are under an IT block. I also do not have the OEM unlock option in dev options. I've tried the whole changing the date and connecting to wifi, with and without sim card but I cannot get this option to show, nor can I unlock the bootload through fastboot.
I have read that most of the new samsung phones do not have a bootloader unlock option, but from what I can tell that is specific to the snapdragon phones, and this tablet is running a mediatek chip.
Now, if I can remove mdm restrictions without rooting that's great, but I have a feeling that is the only way to properly flash this thing to completely remove the mdm.
I have tried the recovery tar that is posted in this forum but I cannot get it to flash, likely because I still don't have an unlocked bootloader
Have any of you all faced something similar or know of a solution? I may call the company the mdm is managed by and just see if they will remove it from their system, but I find it highly unlikely.
Click to expand...
Click to collapse
Hey man! Still got your tab 7? I also have a SM-T227U and have oem unlocked! After doing the usual stuff, you will want to turn off automatically update in developer settings. After that, go to settings>General management>Date and time and select manual time and date, and set it for exactly 10 days before the day you attempt this. OEM unlock will appear in dev settings!!!
Then turn off device and while holding power up + power down, plug into PC. It will show the pre-download mode screen where it asks if you want to continue. Just follow the on screen instructions to unlock bootloader!
*note that the bootloader unlocking results in an unavoidable factory reset**
evan5935 said:
Hey man! Still got your tab 7? I also have a SM-T227U and have oem unlocked! After doing the usual stuff, you will want to turn off automatically update in developer settings. After that, go to settings>General management>Date and time and select manual time and date, and set it for exactly 10 days before the day you attempt this. OEM unlock will appear in dev settings!!!
Then turn off device and while holding power up + power down, plug into PC. It will show the pre-download mode screen where it asks if you want to continue. Just follow the on screen instructions to unlock bootloader!
*note that the bootloader unlocking results in an unavoidable factory reset**
Click to expand...
Click to collapse
Sweet! I will absolutely try this when I get home this afternoon, will report back with results!
But just for clarity. Let's say I start with a freshly wiped tablet. Go through set up and connect to wifi, do I need to add a Google and Samsung account? Then in dev settings, enable USB debugging, also enable wifi debugging? Then change the date. Is there any step I am missing?
coocooguy246 said:
Hello! So I am on a journey to attempt to root a Samsung tab a7 lite sm-t227u. So I want to be extremely transparent as to my reason for rooting:
I was given this tablet by my father whom got it from a previous job. When he left the job they never asked for it back, a long with a good bit of supplies he had that he got to keep.
So, I have this tablet, I can get into it as it doesn't have a passcode. I have wiped it by factory reset as well. However, it has IBM's MAAS360 installed and after factory reset AND a firmware flash using odin I still cannot get rid of this maas360 mdm. It is not Knox locked. I can activate developer mode and change all those settings, but I cannot download any apps through the app store at all or enable unknown source app install as those are under an IT block. I also do not have the OEM unlock option in dev options. I've tried the whole changing the date and connecting to wifi, with and without sim card but I cannot get this option to show, nor can I unlock the bootload through fastboot.
I have read that most of the new samsung phones do not have a bootloader unlock option, but from what I can tell that is specific to the snapdragon phones, and this tablet is running a mediatek chip.
Now, if I can remove mdm restrictions without rooting that's great, but I have a feeling that is the only way to properly flash this thing to completely remove the mdm.
I have tried the recovery tar that is posted in this forum but I cannot get it to flash, likely because I still don't have an unlocked bootloader
Have any of you all faced something similar or know of a solution? I may call the company the mdm is managed by and just see if they will remove it from their system, but I find it highly unlikely.
Click to expand...
Click to collapse
If it has Mediatek chipset then you can use SP flash tool to format the tablet firmware and reflash it.
I would strongly recommend you to backup the NV DATA and NVRAM files before you format the tablet.
coocooguy246 said:
Sweet! I will absolutely try this when I get home this afternoon, will report back with results!
But just for clarity. Let's say I start with a freshly wiped tablet. Go through set up and connect to wifi, do I need to add a Google and Samsung account? Then in dev settings, enable USB debugging, also enable wifi debugging? Then change the date. Is there any step I am missing?
Click to expand...
Click to collapse
You can follow this guide actually! ( https://forum.xda-developers.com/t/...220-t225-install-lsposed-magisk-mods.4406933/) it recommends just skipping the setup junk
I have found that many times, rooting methods work across different models of the same device unless there are some sort of major differences in chipsets or some sort of random change lol
The only thing that doesn't seem to work for our model is section V of the guide which is for the removal of the "bootloader is unlocked" screen at startup. so you will still need to press the power button on that screen to boot up. It's a tiny hassle, but otherwise no big deal in my personal opinion
Make sure to read all the way to the end of the root section (section 4) and especially remember step 7. I retried probably 4 times and even patched the entire AP file of the firmware for use in odin (doing this gives a second warning on Knox screen that it isn't samsung official fw then boots normally into the bootlogo screen) before realizing everything was going fine.. I recommend just using the patched Magisk boot.img first just because I find it unsightly
Just flash the boot.tar in the AP slot. Don't download any of the boot imgs from the guide because they are for the t220's and t225's. I'll link the one I made according to the guide below. It'll save you some time and you won't need to install zarchiver and Magick just to have it factory reset again lol. Just download the latest Magisk apk (26.1) from the official github (https://github.com/topjohnwu/Magisk/releases) and install it when you have completed the 2nd factory reset/the patched boot img install.

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