Cannot enter download mode or recovery mode - Samsung Galaxy S8 Questions and Answers

So here is my situation: SM-G950U with a fresh clean install of stock 9.0 firmware via Odin. Phone reboots, and begins setup. However, I'm met with FRP warning. No big deal, since I know a way around that, but I need to reboot to download mode first and install safestrap to do it. Problem is that neither button hold combination does anything except boot the phone normally. Vol up nor vol down + Bixby + Power provide results from a reboot or a powered off state, except boot the phone normally. I cannot use adb commands either because developer options are not yet enabled because I can't get passed the FRP screen. I should be able to access both modes regardless of what stage of setup the device is in, correct? I know I have before. Is this some kind of security patch? Is there any other way to get to download mode to use Odin? Or a method to bypass FRP without Odin or a custom recovery, or safestrap? I'm really stuck on why I can't force it using the three buttons during boot/reboot. Thanks in advance for your input.

Related

[Question] Semi-Brick?

I was troubleshooting my home button that works from time to time.
So i flashed latest firmware for phone, but im pretty sure i flashed HOME_CSC instead of the normal CSC *FML*
So now when i boot download mode i cant choose by volume buttons, and booting download mode with "adb reboot bootloader" will just reboot rom normally...
Edit: Download mode boots, when using hardware buttons, but cant choose continue in download mode to be able to flash TWRP/Firmware with Odin again.
I guess if i could root it with some 1click method i could try issueing reboot bootloader command from root, but i guess that wont work either and there is no 1click methods AFAIK
Any suggestions?
Would usb-jig work to bypass bootloaders continue screen?
Are you able to boot into recovery?
Yeah i can boot into recovery, i can boot into bootloader too, but i cant press continue..
I can use the Phone semi normally, sometimes home, power or volume Buttons stop working though
In recovery all buttons work, but its the original recovery, so there is not much todo in it afaik?

Root my sprint tab 4?

So I followed this https://forum.xda-developers.com/ta...wrp-install-twrp-root-samsung-galaxy-t3111934 and the best thing ever happened..... Nothing.....
It's a sprint galaxy tab 4 7 inch updated to 5.1.1 SW version T237PVPS1BPL1
So how do I really root?
When in download mode, after flashing twrp, holding power, vol+, and home takes me back to download mode. If i start with device on (or off) and do exact same method, I get stock recovery.
I'm no noob, but most has been htc where the bootloader has to be unlocked first. I have recently rooted 2 samsung s5 devices for my brother doing odin to flash recovery and then flashing superSu. And i have used that crappy app on my tab that floods your device with bloatware (king root) that set off my knox crap. Which has been removed and I lost root.
I'm also aware that some devices, if you don't get into custom recovery as soon as it is installed, then factory one takes over.
So i flash recovery, and progress bar shows finished, but if i hold power, vol+, and home.... It just goes back to download mode.
If I reboot the device, and then hold down above said task, it goes to factory recovery.
Does this fall in the "don't reboot device and go straight to recovery" device? If so, how?
Or, is it not installing recovery?
And why do I get download mode from download mode, and recovery mode from device on/off in normal mode while holding same buttons in each situation?

[HELP!] Custom binary blocked by FRP Lock.

Hello. I have an unlocked SM-G935F which I'm unable to boot normally nor in recovery mode, I always get this error message:
Custom binary blocked by FRP Lock.
Click to expand...
Click to collapse
I can only boot in Download mode.
Apparently this happened because I disabled Developer Options, it may have triggered some kind of anti-tamper protection. I read the only way to fix this is by flashing stock firmware. I have pictures on the Internal Storage I don't want to lose, is there a way to mount the storage or to boot the phone without wiping the internal memory (the bootloader is already unlocked)?
It may work in recovery mode via twrp. If it doesn't work, I believe there is no other way to recover your device.
Dark Stranger said:
It may work in recovery mode via twrp. If it doesn't work, I believe there is no other way to recover your device.
Click to expand...
Click to collapse
I do have TWRP installed, but I can't get to it with the Vol Up + Home + Power buttons combination, as I get this error all the time, as I get it when trying to boot normally. Is there a way to boot recovery from Download mode, as it's possible to do in Fastboot mode?

[ODIN] S10+ will not boot into Recovery Mode

Hi,
This is my first time trying to root an android phone
I'v flashed with Magisk from the github, Used ODIN to do so,
Had OEM unlocked Grey out (already unlocked) in the settings before doing so, and USB debugging etc,
After i successfully flashed with ODIN
I was watching a video and was told to finalise the steps you have to boot into Recovery mode to wipe the phone
Now i followed the button process the person in the video did Vol down + Power to Restart the device from Download Mode
Then Volume up + bixby + power and he said to release the power and bixby after the bootloader warning but i did this and i'v not been able to reach Recovery mode
My samsung is just constantly stuck on the boot Logo after the bootloader warning
but i can restart the phone and reach Download mode again
Would anyone be able to assist thanks
Flash stock firmware.
Also, please keep your issue in your thread. As this is not a patched Odin issue. Thanks
RealBBB
Key Cave
Sent from my SM-G950U1 using Tapatalk

No recovery or download on SM-T500

Seems I found a way to semi brick my SM-T500. I was attempting to install the LOS 18.1 ROM just posted in the guide section. Some how I got the "can only install official" error message on my download screen after flashing TWRP. Made the mistake of flashing only the stock AP without BL or CSC and now I can't get into either recovery or download modes. Holding vol up and down and plugging in USB cable does nothing. Same with holding power button and either vol up or down. Blank screen. Can only power on and boot to system.
Did you install twrp and can you get into recovery. I had similar problem but was still able to get into download mode from power off. However to do so I had to boot into twrp and select reboot and power off... from that menu you can also boot directly to download mode... I know that doesnt halp much if you hadnt installed twrp yet... but thought I would throw that out there...
wizzdome said:
Did you install twrp and can you get into recovery. I had similar problem but was still able to get into download mode from power off. However to do so I had to boot into twrp and select reboot and power off... from that menu you can also boot directly to download mode... I know that doesnt halp much if you hadnt installed twrp yet... but thought I would throw that out there...
Click to expand...
Click to collapse
I can't boot TWRP or download. The only thing that will boot is system. Can't even get to the lock/unlock screen.
can you connect to adb shell? and try #reboot download
or #reboot twrp. I figure if you get to download you can reflash stock and start over.
Also when your trying to boot into recovery try not being plugged in. Not sure about this device but a lot of older Samsung's that I had would not let me get into recovery if I was plugged in during boot.
Locked oem mode
Locked download mode
Locked wipe factory
Locked update from sd card
Recycling item...
Need factory reset
I saw alot of issues with twrp so I tried Magick for first time ever on my SM-T500 and had a minor hiccup bc I wasn't paying attention to firmware and installed an old AP with newer firmware but ended up just reflashing the whole tablet with the same firmware as the AP that is required for Root and presto it worked! AND HEY IM DEF A NEWBIE!
housemusix said:
Locked oem mode
Locked download mode
Locked wipe factory
Locked update from sd card
Recycling item...
Need factory reset
Click to expand...
Click to collapse
Yeah I've run into the same thing, I originally missed the step to run Magisk after I flashed the patched tar and rebooted into the System and it triggered the "Prenormal KG state" problems. Finally I managed to flash stock ROM back and got to exactly where you are now.
I was able to just flash the patched Magisk AP without CSC and BL, and now it will only go to stock recovery and was able to get TWRP to work once but couldn't factory reset or wipe cache due to (which I assume was) a ton of mounting failures when it loaded.
Anyone else have suggestions to get this thing stable so I can flash LOS? I can get to Download mode.
hello, I post this because it's seems the same subject. I have to password protected (forget password) original rom tablet (non root). For me the datas are not important , I just want to remove the password or reflash with original rom. I downloaded Odin , usb driver and correct firmware. I select AP firmware with Odin, I see the connexion (COM3 green) and it's stuck to "setup connexion".
My problem is that it's impossible to enter in download mode.
When I try to shutdown the tablet, it ask me for a password.
When I press for seconds the power button , after few second I see the Samsung Logo and the tablet restarts.
I try to press volume up, volume up and volume down etc...but each combinaison...no recover, no download mode, nothing and impossible to flash . is it normal ? how to do to unsticked SetupConnetion ?
regards
bruno
housemusix said:
Locked oem mode
Locked download mode
Locked wipe factory
Locked update from sd card
Recycling item...
Need factory reset
Click to expand...
Click to collapse
This is not the same as my problem. My problem is that I flashed AP without BL and the two don't match. It isn't that things are locked but that I can't boot to anything but system. Can't boot recovery or download so I can't flash ANYTHING. Not even stock.

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