BUJ1 fw. I had previously rooted the device and it was working fine, then x days later found it wouldnt boot (teal screen with 'enrolled knox guard prevent flashing factory binary (vbmeta)' displayed) so I reflashed the stock binary. Now when I go into dev options, I cant get OEM unlock to appear (tried the date forward/back.. didnt work). Anyone know how I can fis that?
Additionally, in download mode the tab shows 'oem lock off (u)' and 'kg status normal', but when I try to flash the magisk modified ap file to root it, it fails almost at the end of the odin process with the 'enrolled knox guard prevent flashing factory binary (vbmeta)' error displayed on the download screen. Rebooting then boots back into the stock android. Is this likely to be linked to the owm unlock being unavailable in dev options even tho the device is showing oem lock is off?
Related
Hi everybody, I'm new here and I wanted to ask you a problem:
Few days ago I rooted my Samsung Galaxy Grand Prime SM-g53f with a pre-rooted ROM (It was the only way) and I wanted to install xposed framework, but for lollipop is needed a custom recovery, but trying to flash it by odin it says:"Custom binary (Recovery) blocked by FRP". I've been looking on a lot of forums, but I get no answer. I tried with the TWRP app but it says that an error happens.
Delete your google account first. Then flash twrp
Don't do what @aamnahid said, go to the developer options (Tap 8 times in build number), and check OEM Unlock. Then reboot your phone normally then you can try and flash it.
fabiossilva21 said:
Don't do what @aamnahid said, go to the developer options (Tap 8 times in build number), and check OEM Unlock. Then reboot your phone normally then you can try and flash it.
Click to expand...
Click to collapse
Fabio, what else we can do if OEM lock is grayed out (not able to enable/disable)?
Edit: No one replied with a good answer so i reinstalled stock recovery while keeping root and turned off OEM Unblock and it bricked my device with "custom binary blocked by frp lock" and i am currently fixing it with Smart Switch initialization. Moral of the story: Never disable OEM Unlock
(A5 2016)
Does this happen after you turn off OEM Unlock because the recovery is not stock (TWRP is installed) or because the device is rooted or both?
If after rooting with https://forum.xda-developers.com/sa...overy-samsung-sm-a510f-fd-exynos7580-t3314399 i flash stock recovery and turn off OEM Unlock will i still get this message?
Thanks!
Please note that i had the "custom binary blocked by frp lock" error but i fixed it with Smart Switch initialization. I want to turn off OEM Unlock for security reasons
just flash previous firmware version which u have in your phone before frp lock.
nothing to worry its not bricked.
only ensure version u are going to flash is same as before , flash via odin and enjoy
I already did it, my question is that if i remove TWRP and install the stock recovery while keeping root, will disabling "OEM Unlock" show "custom binary blocked by frp lock"
Help
I am going through a similar enigma. I have S7 Edge. If I log in with Google and then turn down unlock on will I get custom binary error? Any help would be greatly appreciated.
@CrystalGTX
This is an old thread, but I am having the same problem; (stupidly) unchecked OEM Unlock. Reboot, and now I have "Custom binary blocked by FRP lock".
When you say "fixed it with Smart Switch initialization", does that essentially mean reflashing firmware?
And as a result, erasing all data?
I've read that flashing stock firmware can save the hardware, but I'm much more concerned about the data; I need my contacts, photos, txts, etc.
EDIT: Err, shoot. I see now this was posted by a Guest, so I doubt the OP is going to give me a response. Anyone else help?
Hello,
Recently I have rooted my samsung galaxy J5 SM-J500F phone. Next I opened OEM and enabled USB debugging, and then flashed TWRP with Odin. All went well, made a full backup (i.e. all the options were selected). I have stored the files on my PC, and then foolishly closed the OEM and USB debugging. Some time after I restarted my phone and I was met with the "Custom Binary blocked by FRP" screen. I could not boot into recovery, the only screen accessible was the download screen. I have hunted for a few firmware files, tried to flash them all to no avail. They are either being blocked by the FRP, or the "secure check fail" error (when trying to flash the PIT). I would like to
a) Repair the phone (my personal files can be deleted, no need for me to keep anything)
b) Prevent this issue for recurring (perhaps by disabling this FRP permanently in some way if possible)
Thanks in advance.
Kaizen-85 said:
Hello,
Recently I have rooted my samsung galaxy J5 SM-J500F phone. Next I opened OEM and enabled USB debugging, and then flashed TWRP with Odin. All went well, made a full backup (i.e. all the options were selected). I have stored the files on my PC, and then foolishly closed the OEM and USB debugging. Some time after I restarted my phone and I was met with the "Custom Binary blocked by FRP" screen. I could not boot into recovery, the only screen accessible was the download screen. I have hunted for a few firmware files, tried to flash them all to no avail. They are either being blocked by the FRP, or the "secure check fail" error (when trying to flash the PIT). I would like to
a) Repair the phone (my personal files can be deleted, no need for me to keep anything)
b) Prevent this issue for recurring (perhaps by disabling this FRP permanently in some way if possible)
Thanks in advance.
Click to expand...
Click to collapse
https://forum.xda-developers.com/android/software/patched-odin-3-13-1-t3762572 That might be worth trying the OEM unlock needs to be left alone when it is unlocked and never touched again.
A friend of mine gave me a galaxy on7 (bricked) for repair. I downloaded the stock firmware and flashed it with odin. After the boot up, the phone started normally. However, the IMEI numbers were not there and the device was giving a drk error in stock recovery. I enabled the Developer Options, tried to toggle 'OEM Unlock' but it wouldn't turn on. I tried the date changing trick for OEM unlock but none of the software update part worked as there was a drk problem. Any ideas on how can I toggle the OEM unlock or fix the DRK problem in this non root state? I plan on rooting the phone and then repairing the IMEIs or simply restore the EFS back up files I found online.
Hi there,
I have a Samsung Galaxy Tab A6 (SM-T285) which I bought today. I followed this tutorial to install twrp, ultimately to root the device:
I can't even post links so sad. But the link was of **********.
Everything worked fine and I was able to boot and reboot fine. Until I signed in with my Google Account. After trying to reboot, I get a black screen with the Samsung logo and a text in red saying: Custom binary blocked by FRP Lock. I went back to the store and they advised me to install Samsung Smart Switch to try and restore. In the Smart Switch program I get an error saying that the device is not supported by Smart Switch.
I can get into download mode, not into any other mode. I can't get into recovery mode. The tablet doesn't start up at all. On the download mode it also says FRP Lock ON.
When I go back into ODIN and retry to install the from above TWRP image, it says operation failed.
Can anybody please advice? I am at a complete loss. Am I supposed to flash the original boot file? Where can I find that for my device? Will my tablet accept that, since ODIN didn't even want to flash my current TWRP image a second time?
P.S. I only read later that you are supposed to change the OEM setting. I didn't. Is that the cause of this issue, and if so, can I do something about it?
Thanks
Pro_Gamer368 said:
Hi there,
I have a Samsung Galaxy Tab A6 (SM-T285) which I bought today. I followed this tutorial to install twrp, ultimately to root the device:
I can't even post links so sad. But the link was of **********.
Everything worked fine and I was able to boot and reboot fine. Until I signed in with my Google Account. After trying to reboot, I get a black screen with the Samsung logo and a text in red saying: Custom binary blocked by FRP Lock. I went back to the store and they advised me to install Samsung Smart Switch to try and restore. In the Smart Switch program I get an error saying that the device is not supported by Smart Switch.
I can get into download mode, not into any other mode. I can't get into recovery mode. The tablet doesn't start up at all. On the download mode it also says FRP Lock ON.
When I go back into ODIN and retry to install the from above TWRP image, it says operation failed.
Can anybody please advice? I am at a complete loss. Am I supposed to flash the original boot file? Where can I find that for my device? Will my tablet accept that, since ODIN didn't even want to flash my current TWRP image a second time?
P.S. I only read later that you are supposed to change the OEM setting. I didn't. Is that the cause of this issue, and if so, can I do something about it?
Thanks
Click to expand...
Click to collapse
Reinstall stock rom
Change OEM setting in Developer Options
Then you install TWRP - Turn off auto reboot in TWRP
After ODIN install, manually reboot to recovery.
gcrutchr said:
Reinstall stock rom
Change OEM setting in Developer Options
Then you install TWRP - Turn off auto reboot in TWRP
After ODIN install, manually reboot to recovery.
Click to expand...
Click to collapse
wait......... do i off oem unlock or on it
Pro_Gamer368 said:
wait......... do i off oem unlock or on it
Click to expand...
Click to collapse
slide the button to the right
gcrutchr said:
slide the button to the right
Click to expand...
Click to collapse
thanks, you're a legend :good::good::good: