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[Q] Trying to root, cant get into download mode

Im following this here:
http://www.techzek.com/how-to-root-samsung-galaxy-s-blaze-4g-sgh-t769-smartphone/
But the power, vol up and down get it to show the yellow "warning" thing that im supposed to see, but it goes away after like half a second so I cant get into it. What else can I do?

how to get to download mode.
As you press the volume +/- and power button , simultaneously plug the micro usb cable into your phone (this cable should already be attached to your pc). This should do the trick.
Happy rooting.

The instructions in the first post are wrong, and should be updated. You have to have the cable plugged in. In the video for example, he has the phone plugged in the entire time. You're not required to have three hands in order to get it done.

I've had no luck with any of the variations on this method either.

Turn your phone off, hold both volume buttons and with your usb plugged into the computer take the other end and plug it into your phone while continuously holding the volume buttons. It will boot into the caution screen and than you press up to get into download mode.
Sent from my SGH-T769 using XDA Premium App

If none of the above still don't work try this
1. Turn off phone
2. Remove battery
3. Remove sim card
4. Remove SD card
5. Plug in USB from computer
6. Hold volume up + volume down
7. While still holding the volumes insert battery
8. Should now be in download mode
Sent from my SGH-T769 using xda premium

Thank you both for the replies. I've tried both methods several times without success. I'm tired now so I'll quit for the night. I'll try again tomorrow a few more times. If I can't get it to work I'll take it as a sign that I'm not meant to root this phone. I must have tried 30 times today; it gets old.

Update:
I've tried this ten or fifteen more times. I'm finding that the yellow warning message, whatever it is, doesn't appear at all, ever, unless the USB cable is not connected when I put the battery in. If the USB is connected, I get the gray battery icon every time, no matter what else I do.
If I do connect the USB, with the battery out, I immediately feel the device vibrating every second or so, as if reboooting.
I tried removing the SIM and SD cards again. This had no effect.
It's very strange. In that video the entire process looks about as easy as doing a simple battery pull. It's just not working for me. Is it possible that Samsung made some of these phones "root-proof"?

Worst case scenario you will have to buy a Samsung jig.
Sent from my SGH-T769 using XDA Premium App

I had to do it a few times myself.... It did not catch for me the first 3-4 times...
Then it worked. Make sure you are holding down all 3 buttons down tight.

amberSamsung said:
I had to do it a few times myself.... It did not catch for me the first 3-4 times...
Then it worked. Make sure you are holding down all 3 buttons down tight.
Click to expand...
Click to collapse
I think I've tried it at least 50 times now, with variations, and it's just not happening. I freely admit my ineptness, but holding down buttons is something even I can manage.
By "three buttons", I take it you mean two. I don't have separate volume up/down buttons on my Blaze; just a single rocker button. That's what you mean, right?
I did get as far as the warning screen, but from that screen there is no option for pressing up to go into download mode, so it seems that my warning screen is different from others'.
I guess the next thing is to research "Samsung jig" and figure out whether this is something I can possibly do.

I went through the same thing, I too thought I had to purchase a jig but the method I posted thanks to another member saved me, try again with a modification to step 6
1. Turn off phone
2. Remove battery
3. Remove sim card
4. Remove SD card
5. Plug in USB from computer
6. Hold volume up + volume down + power buttons
7. While still holding the volumes insert battery
8. Should now be in download mode
Sent from my Samsung Blaze using my awesomeness

xArcane1x said:
I went through the same thing, I too thought I had to purchase a jig but the method I posted thanks to another member saved me, try again with a modification to step 6
1. Turn off phone
2. Remove battery
3. Remove sim card
4. Remove SD card
5. Plug in USB from computer
6. Hold volume up + volume down + power buttons
7. While still holding the volumes insert battery
8. Should now be in download mode
Sent from my Samsung Blaze using my awesomeness
Click to expand...
Click to collapse
Thank you. I just tried it a couple of times, without success. I have to go out now, but I'll give it another few tries later.
If I have to get a jig, should the Samsung Galaxy S be compatible? I'd think so, but I don't know for sure.

This is a slight variation of what everyone is suggesting...I was also getting vibrations when trying other methods.
Turn off phone
Unplug battery
hold volume rocker, make sure you're holding down both up and down
Insert battery
Hold power button until the warning comes up...only takes a few seconds

I said three buttons, because it seemed (at least to me) that you need to hold sides of the volume button down at the same time. It does not seem to be just a up/down button.
ubizmo said:
I think I've tried it at least 50 times now, with variations, and it's just not happening. I freely admit my ineptness, but holding down buttons is something even I can manage.
By "three buttons", I take it you mean two. I don't have separate volume up/down buttons on my Blaze; just a single rocker button. That's what you mean, right?
I did get as far as the warning screen, but from that screen there is no option for pressing up to go into download mode, so it seems that my warning screen is different from others'.
I guess the next thing is to research "Samsung jig" and figure out whether this is something I can possibly do.
Click to expand...
Click to collapse

rbeier1221 said:
This is a slight variation of what everyone is suggesting...I was also getting vibrations when trying other methods.
Turn off phone
Unplug battery
hold volume rocker, make sure you're holding down both up and down
Insert battery
Hold power button until the warning comes up...only takes a few seconds
Click to expand...
Click to collapse
Thanks for this suggestion, but it also didn't work.
This method, like some of the others, takes me into what I think is Recovery Mode. I'm not sure, because I don't really know what I'm doing. The message that flashes on the screen isn't really a warning. Doing it this way, i.e., releasing the power button but not the volume button after the phone starts, takes me to a screen that says,
Android system recovery <3e>
at the top. Then there are some options: reboot system now, apply update from sdcard, wipe data/factory reset, wipe cache partititon. I can use the volume button to select an option, and the "OK Key", whatever that is, to select.
Near the bottom of the screen, in yellow, is the text that I couldn't read before:
-- Verifying internal MMC block...
checksum confirmation -> check(0)
Not need checksum confirmation
already executed!!...
# MANUAL MODE #
And that's it. In the background of this screen, grayed out, there's a white triangle with a yellow exclamation mark in it and a little green android.
Is there a way to get from this screen to Download Mode?

adb reboot download
should get ya

shabbypenguin said:
adb reboot download
should get ya
Click to expand...
Click to collapse
I guess it might if I could get ADB to work. So far, no luck; but that's a whole different problem. There are pages upon pages of posts here from people having difficulties getting ADB to work, so it'll take days or weeks to sift through all that and figure out what I'm doing wrong.
I thought the actual rooting process would be fairly simple, and it would only get complicated when trying to install custom ROMS and that sort of thing, which I'm not trying to do. It appears that I was wrong. I think I just don't have the knowledge to do this.

ubizmo said:
I guess it might if I could get ADB to work. So far, no luck; but that's a whole different problem. There are pages upon pages of posts here from people having difficulties getting ADB to work, so it'll take days or weeks to sift through all that and figure out what I'm doing wrong.
I thought the actual rooting process would be fairly simple, and it would only get complicated when trying to install custom ROMS and that sort of thing, which I'm not trying to do. It appears that I was wrong. I think I just don't have the knowledge to do this.
Click to expand...
Click to collapse
Make sure you have Kies Air turned on when you try to connect. You can use USB or wireless mode then. I tried and without Kies, it would not connect.

amberSamsung said:
Make sure you have Kies Air turned on when you try to connect. You can use USB or wireless mode then. I tried and without Kies, it would not connect.
Click to expand...
Click to collapse
So I should have debugging mode and Kies Air turned on, and then ADB should be able to find the Blaze? I'll try it tomorrow.
Thank you.

[Q] [Q} Broken Power Button, Phone won't go into Recovery or Download Mode

The power button on my phone recently has stopped working. I need to get it warrantied, but I am running CM 10.2. I need to Odin back to stock, but I can not get into Download Mode or the recovery. When I go into Download mode, the initial screen pops up, the one where you choose to hit up to continue, or down to reboot normally. After I hit up, the screen goes black and nothing happens.
I really need to get back to stock, as Bestbuy are being dicks, and demanding I do a factory reset before they send my phone in.

Anything? I still need help on this.

Pompsy said:
Anything? I still need help on this.
Click to expand...
Click to collapse
This has been covered at least 10 times in the past few months we need a sticky. Take your battery out hold your phone so the power button is facing a table or floor and slam that side a few times it should work again (Temporary). You might need to hit it on the surface really hard 10-20 times before it works. Just not to hard or else you might crack the screen. I used a mouse pad to soften the impact. This trick no longer works for me so I ripped the button off. After about a month of doing this I needed to use things that would only hit the button to make it work. About a month after that nothing worked so I just took it off the motherboard and now boot from a off state by plugging into the wall and enter odin mode deny the prompt and it kicks me into a workable state.

ThePagel said:
This has been covered at least 10 times in the past few months we need a sticky. Take your battery out hold your phone so the power button is facing a table or floor and slam that side a few times it should work again (Temporary). You might need to hit it on the surface really hard 10-20 times before it works. Just not to hard or else you might crack the screen. I used a mouse pad to soften the impact. This trick no longer works for me so I ripped the button off. After about a month of doing this I needed to use things that would only hit the button to make it work. About a month after that nothing worked so I just took it off the motherboard and now boot from a off state by plugging into the wall and enter odin mode deny the prompt and it kicks me into a workable state.
Click to expand...
Click to collapse
I can get into the system just fine. When I go into the recovery or download mode, it doesn't stay in that mode. I tried the banging thing, and it made my power button go from intermittently working, to not working at all.

keep doing it until it works. The button is sticking that is why it reboots/stopped working.

Pompsy said:
I can get into the system just fine. When I go into the recovery or download mode, it doesn't stay in that mode. I tried the banging thing, and it made my power button go from intermittently working, to not working at all.
Click to expand...
Click to collapse
It sounds like your power button is physically broken, and it is activating intermittently, which is stopping the phone from entering download mode. My only experience with this problem is my own phone but ultimately mine got so bad that I had to rip the button off the motherboard, as ThePagel did. Your symptoms sound the same as mine.
You can try this procedure to get into recovery, which works for me without a power button. You will probably have the same problem you are having now with the phone rebooting on its own before you actually get into recovery, because the power button is activating.
1. Take the battery out of the phone and unplug it from USB power.
2. Plug in USB power.
3. While holding down the volume-down button and the Home button, insert the battery (this is a little tricky).
4. The phone should start and warn you that you are entering Download mode. If you want to use Odin to return to stock, do that now.
5. If you want to get into Recovery instead, press Volume Down to reboot and then *immediately* push and hold Volume Up and Home simultaneously. The phone should reboot into recovery. Mine does.
If that doesn't work, and you can't get a new phone without returning it to stock, then prying the power button off the phone's motherboard may be your only solution.

Cannot power on phone

So before, my power button gave me issues where it required substantial force to be used in order to get any response. Now all of a sudden, the fingerprint sensor went out as well as the power button itself. When attempting to do a hard reset to correct the problem, the phone won't turn on anymore. So it would seem that the power button no longer works and now I cannot turn on my phone . I've attempted to go into download mode or even the bootloader with little to no luck at all.
Does anyone have an alternative way to power on the phone so I can attempt to backup my data?

konoha457 said:
So before, my power button gave me issues where it required substantial force to be used in order to get any response. Now all of a sudden, the fingerprint sensor went out as well as the power button itself. When attempting to do a hard reset to correct the problem, the phone won't turn on anymore. So it would seem that the power button no longer works and now I cannot turn on my phone . I've attempted to go into download mode or even the bootloader with little to no luck at all.
Does anyone have an alternative way to power on the phone so I can attempt to backup my data?
Click to expand...
Click to collapse
This took a lot of trial and error with various button combinations, but I think I found a solution that works.
You must use the wall charger and cord. That's what I used.
1. Press and hold the volume up and down button at the same time.
2. Plug in the wall charger to the charging port.
3. You will see the lg logo on your phone.
4 Right when you see the lg logo unplug the charger from the phone.
5. Continue holding the volume up and down button.
6. LG logo will go away and then come back and your phone should boot.
5. Release the volume up and down button when it starts to boot.
Note: If you don't pull the power cord right when you see the lg logo, it will go into charging mode.
I was able to successfully boot my phone from a powered off state this way 3 times with no problem.
Once you get it booted, you could download an app from the play store to remap a volume button to be a power button as a temporary solution.
https://play.google.com/store/apps/details?id=com.teliapp.powervolume
Other options:
https://play.google.com/store/search?q=power button to volume button
I hope this helps.

duke69111 said:
This took a lot of trial and error with various button combinations, but I think I found a solution that works.
You must use the wall charger and cord. That's what I used.
1. Press and hold the volume up and down button at the same time.
2. Plug in the wall charger to the charging port.
3. You will see the lg logo on your phone.
4 Right when you see the lg logo unplug the charger from the phone.
5. Continue holding the volume up and down button.
6. LG logo will go away and then come back and your phone should boot.
5. Release the volume up and down button when it starts to boot.
Note: If you don't pull the power cord right when you see the lg logo, it will go into charging mode.
I was able to successfully boot my phone from a powered off state this way 3 times with no problem.
Once you get it booted, you could download an app from the play store to remap a volume button to be a power button as a temporary solution.
https://play.google.com/store/apps/details?id=com.teliapp.powervolume
Other options:
https://play.google.com/store/search?q=power button to volume button
I hope this helps.
Click to expand...
Click to collapse
Holy ****, this method works! Thank you so much, you just saved my bacon!

konoha457 said:
Holy ****, this method works! Thank you so much, you just saved my bacon!
Click to expand...
Click to collapse
You're welcome. Glad I could help.

fkin ****e it worked. thank you my dude

Galaxy s6, boot loop from HELL

Please help me! I own a galaxy s6 (international model, official, not rooted) which is stuck in a boot loop from hell. The led is white (not the usual "boot-up blue") and won't change colour or even turn off. It was the last straw a few hours ago when it randomly restarted, got stuck halfway through the Samsung logo and started making the loudest noise I've ever heard it produce. It was NOT a vibration. Ever since then, it has just been stuck and keeps restarting. When it does get past the "Samsung Galaxy S6" screen it just says 'no command' with the android lying on its back. I'm at a complete and utter loss. It's actually done this a few times this week, but I've always been able to at least boot it into safe mode and uninstall snapchat - which I think is the cause of all this. I can't power off the device, and even when the battery drains completely, the same 'no command' screen appears as soon as it's plugged in. I can't boot it in recovery mode as I can't get it to switch off. I think it may be battery related or even motherboard related. I can't even seem to bypass the 'no command screen. It's just sitting on my floor, charging, overheating and looking all smug. Frankly, I'm pretty damn close to hurling it out of my window.
Also, does anyone know WHY the led is sometimes white or yellow during a boot loop on newer Samsung Phones?

Put the phone in download mode by holding Power + Home + Volume Down buttons. Plug in to Odin and Flash Official Firmware or use SmartSwitch

UltraGamerHD said:
Put the phone in download mode by holding Power + Home + Volume Down buttons. Plug in to Odin and Flash Official Firmware or use SmartSwitch
Click to expand...
Click to collapse
Thanks but I've tried this several times. The device seems to be completely unresponsive to all commands except a force restart (power key and volume down). I can't put it in download mode or even power it off

have u tried using smart switch emergency firmware recovery? power key and volume down should force it to power down, than enter download mode vol down + home + power key.

HowJesNo said:
have u tried using smart switch emergency firmware recovery? power key and volume down should force it to power down, than enter download mode vol down + home + power key.
Click to expand...
Click to collapse
Whenever I use this combination of keys it just restarts and it doesn't even show up on Smart Switch when connected to my mac

if you are not be able to take your phone to download mode then repair center is the only solution.

qasim799 said:
if you are not be able to take your phone to download mode then repair center is the only solution.
Click to expand...
Click to collapse
Yeah. It looks like I have no other choice

I updated TWRP for S10 - on my S10E! - FIXED!

I did not pay attention and 'upgraded' my working TWRP for S10e to TWRP for S10. No 'e'
Now I'm stuck at the very first boot screen 'Samsung Galaxy S10e, Secured by Knox'. After 6 sec the screen go black and then nothing more. No charging icon.
I'm not able turn off the phone for entering download mode with 'Vol down + Bixby' and USB. Any tip for this?
'Vol down + Power' for 7 sec reboots directly back to the same screen. I have not found any other boot-combinations that works.
The phone does not show up in Win.
Any tip? Hard bricked?

superlutin said:
I did not pay attention and 'upgraded' my working TWRP for S10e to TWRP for S10. No 'e'
Now I'm stuck at the very first boot screen 'Samsung Galaxy S10e, Secured by Knox'. After 4-6 sec the screen go black and then nothing more. No charging icon.
I'm not able turn off the phone for entering download mode with 'Vol down + Bixby' and USB. Any tip for this?
'Vol down + Power' for 7 sec reboots directly back to the same screen. I have not found any other boot-combinations that works.
The phone does not show up in Win.
Any tip? Hard bricked?
Click to expand...
Click to collapse
Press and hold volume down, bixby, and power for 10-20 seconds. That should get you to download mode.

klabit87 said:
Press and hold volume down, bixby, and power for 10-20 seconds. That should get you to download mode.
Click to expand...
Click to collapse
Thank you @klabit87, but no change. Adding Bixby to the boot prosess did not change anything. It just reboots to the same very first boot screen.
I'll try to drain my battery to power it off.

superlutin said:
Thank you @klabit87, but no change. Adding Bixby to the boot prosess did not change anything. It just reboots to the same very first boot screen.
I'll try to drain my battery to power it off.
Click to expand...
Click to collapse
Then try without the bixby button. You should be able to force it to bit into download mode.

BTW, on S10 series the classic way to enter Download mode is
-power off
-Vol down + Bixby, then add USB. Connecting USB boots the phone.
Voila, Download mode. Normally.
But I'm even not able to turn off...

I've been able to force it to boot to download by using the key combinations before. It's definitely not hard bricked. It can be recovered.. Just need to get to download mode.

Thank you klabit87, thats kind of good news! Now I just wonder how... I've drained the battery to be able to start from 'off'
(Now I do not know if it even charges? No indication)

MIRACLES!
Battery drained. Bixby + Vol down. Then connected USB (from cherger) and DOWNLOAD MODE!!!
But no connection when connecting to Win. (Yes, drivers installed) Can it be a bad cable? (It's not the original one, and when charging I sometimes got a little warning)

superlutin said:
MIRACLES!
Battery drained. Bixby + Vol down. Then connected USB (from cherger) and DOWNLOAD MODE!!!
But no connection when connecting to Win. (Yes, drivers installed) Can it be a bad cable? (It's not the original one, and when charging I sometimes got a little warning)
Click to expand...
Click to collapse
Yeah you'll want to get a good quality cable for sure. But seems like things will be sorted shortly

I lost 'Download Mode' before I got new cable and had to discharge again. New cabel worked as charm, Odin recognized it at once, correct TWRP installed, rebooted to Recovery, installed kernel & Magisk, and everything was back to normal!
Thank you klabit87 for encouraging me!

That's good news! Glad you got it worked out.