I'm now finally trying to flash the T-Mobile version onto my sm-g998u1, When I follow the instructions to get into bootloader it just restarts the phone normally like a regular reboot? Any guidance on getting this done correctly. Below are the steps I saw how to reboot into bootloader:
Turn off your Galaxy S21.
Connect it to your computer using a USB cable.
When the charging percentage level animation stops, hold the Volume UP + Power keys simultaneously for 5-7 seconds.
Keep both the hardware buttons pressed until you enter the Android Recovery mode.
Once you enter the recovery mode on your Galaxy S21, highlight Reboot to Bootloader using the Volume Down key and select it using the Power button.
Your Galaxy S21 will boot into the Download Mode
Much thanks and sorry again for the many posts.
fil.lujan said:
I'm now finally trying to flash the T-Mobile version onto my sm-g998u1, When I follow the instructions to get into bootloader it just restarts the phone normally like a regular reboot? Any guidance on getting this done correctly. Below are the steps I saw how to reboot into bootloader:
Turn off your Galaxy S21.
Connect it to your computer using a USB cable.
When the charging percentage level animation stops, hold the Volume UP + Power keys simultaneously for 5-7 seconds.
Keep both the hardware buttons pressed until you enter the Android Recovery mode.
Once you enter the recovery mode on your Galaxy S21, highlight Reboot to Bootloader using the Volume Down key and select it using the Power button.
Your Galaxy S21 will boot into the Download Mode
Much thanks and sorry again for the many posts.
Click to expand...
Click to collapse
Hi mate
Maybe step 3 is not quite right, you can check this thread it has a lot of information
Reboot Phone in Download Mode: Connect USB-cable to your computer. Hold down "Volume up" and "Volume down" at same time. While holding down, connect the USB-cable to your phone. Or use the command "adb reboot-bootloader"
Do not wait for the % animation.....
Further information here
You can also do it via ADB (adb reboot download)
Thank you. Appreciate it.
Glad I could help
Related
Hello everyone.
I got a new Galaxy Ace S5830i today.
I rooted it and installed CWM (http://forum.xda-developers.com/showthread.php?t=1552792).
After that I did install Retribution beta 4 (http://forum.xda-developers.com/showthread.php?t=1806471).
Then after rebooting I ended up getting a boot animation loop and neither the recovery mode would work nor the download mode.
Could anyone of you please help me? I feel very uncomfortable with a brick in my pocket. :x
I'd be surprised if neither were working, particularly if you are getting as far as the boot animation.
To clarify, to enter recovery mode: Switch off your phone (pull out the battery and re-insert if its looping and the power button won't work), hold down power button AND home/rectangular button AND volume up button. When you see the Samsumg GT-S5830i logo, let go of the power button but continue to hold down the home and volume up buttons for around 5 seconds then let go of everything. Recovery console should appear on screen.
To enter download mode: Switch off your phone, hold down power button AND volume up button AND volume down button. Warning about custom OS's should appear, followed by download mode after pressing volume up again. If this doesn't work try taking out battery, sim card and SD card, connecting USB lead (screen will be completely powered off) and then trying the key combination.
Unlocked and rooted with TWRP and SuperSU.
Ok, so I messed with framework-res.apk when I wasn't in recovery mode, and now know I should not have done this unless I was in recovery.
Phone will start to boot and begin the boot up animation but then goes blank. Adb does not recognize the device when connected to my computer, so I don't think it boots.
Problem is that when I hold volume down and power buttons together, it won't boot into fastboot mode, either.
So I can't use adb and can't get into fastboot mode. If I hold the power button down for 7 seconds, it starts to boot again but goes blank after the boot up animation begins.
Any ideas? I don't understand why I can't get into bootloader mode. I wouldn't think a system file like framework-res.apk would have anything to do with the bootloader mode.
OK, figured it out. I had to disconnect my phone from my computer and then hold all 3 buttons down - power, volume up and volume down and then release. That put me into bootloader mode.
I can now confirm that you (or at least I) should not mess with framework-res.apk even while in recovery, lol!
All I want is my custom wallpaper back, wah!
The good news is that if you can't boot into bootloader using volume down and power, you can try the 3 button reset to get into bootloader. Have to hold them all down for at least 10 seconds and you can't be connected to your computer by a USB cord.
Hello. I have a razr I and decided to unlock the bootloader. I tried the button combination power + volume down several times, but the phone just powers up normally (actually rhe screen flashes for a second, but doesn't go into fastboot mode. I trided using adb reboot fastboot but the device just reboots. What can I do about it?
NVM, just did it by fastboot reboot bootloader...
Ok, one more thing. It seems my device ignores the key combo, but I was still able to get into fastboot mode by using adb. However, I have tried to flash a custom recovery with no success.
I tred using the supplied installer and after rebooting I get to the open robot screen with the red exclamation mark. Then, after holding some keys (not sure if power or power + volume down I get into recovery, but it's still the stock android recovery. Then I tried flashing the recovery image from fastboot mode. It sait the recovery was flashed, but still cannot boot into recovery. What's wrong with my phone?
axlastro said:
Hello. I have a razr I and decided to unlock the bootloader. I tried the button combination power + volume down several times, but the phone just powers up normally (actually rhe screen flashes for a second, but doesn't go into fastboot mode. I trided using adb reboot fastboot but the device just reboots. What can I do about it?
NVM, just did it by fastboot reboot bootloader...
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Click to collapse
Just incase you need to do it in the future:
Hold volume down, then hold the power button. When it begins to vibrate release the power button and keep the volume down button pressed until you get into fastboot.
AGISCI said:
Just incase you need to do it in the future:
Hold volume down, then hold the power button. When it begins to vibrate release the power button and keep the volume down button pressed until you get into fastboot.
Click to expand...
Click to collapse
Alright. So how about the never appearing CWM recovery?
Hi
I've flashed (including kernel) my phone (C6903) TrinityVengeanceRaptorXHD_1.3-XperiaZ1 and TrinityVengeanceRaptorXHD-LB_UB-Patch-V1.4 taken from here. Unfortunately after it was done my phone was also done.
There is no reaction on 3 buttons pressed at the same time and i cant get into flashmode or fastboot mode. Holding power button makes a single vibration that is being repeated as long as the PB is being hold.
Can anyone help me bringing it back to life? Can it be done not leaving the room or do i need some special tools or send it to guys that has these?
Regards
Wizzy
Hi
I've managed to rescue it. I'm not sure how i did that os i will put here steps that i've taken. Firstly i could not enter fastboot or flashmode by PButton + Vol UP or Vol Down button. I've opened flash tool and connected phone while holding power down button but after unpacking flash image it prompted to unplug the device and plug it again with volume down button being hold but nothing was happening.
So here are steps:
1. I've connected it to the AC and tired holding different combination of buttons ( to see if the led is working ). VIsualy no response has been noticed.
2. While flash tool was still hanged on prompted dialog i've connected the phone to the PC while holding volume down button.
3. It started flashing process.
Thansk & Regards
Wojtek
Hi all,
i need to share with you how to enter your a6 in download mod:the way i found is:
just press vol+/vol- and connect your phone on pc,
that's all
It works for me
dabenaute said:
Hi all,
i need to share with you how to enter your a6 in download mod:the way i found is:
just press vol+/vol- and connect your phone on pc,
that's all
It works for me
Click to expand...
Click to collapse
wow thank you. when connected to pc maybe that's same as pressing power button. but in actual when pres vol+ and vol- and power,,the phone keeps looping on samsung logo. maybe it need to release some of those button during looping cycle....
Now, my A6 plus is in a boot loop after I pressed Volume up + Volume Down and Power Button. What hppened? How can I go back ?