Hi guys,
Is there a way to get to the bootloader without the power button? My power button is broken and I'd like to lock the phone before sending it back to samsung. Unfortunately I flashed the stock zip/recovery before realizing that I needed to be rooted to get to the bootloader through various apps. Now I seem to be in a situation where I cannot get to the bootloader to lock my phone using fastboot.
Any suggestions?
If you have the correct drivers installed and the android-sdk you can just do an 'adb reboot bootloader' in the command prompt. Then 'fastboot oem lock'. Without the quotes. You should have no issues unless your phone is off.
You could do that with some roms too
adb reboot bootloader
if you have a terminal emulator app installed..
su(press enter)
reboot bootloader(press enter)
or you can..
reboot recovery(press enter)
I would do what the top guy said and use adb off your computer to push it through.
You had to run adb to get the thing unlocked and rooted in the first place right (not being snotty, its just the only way i know of doing it)?
if you get into a jam just start poking at circuits with a paper clip until something fries lol then they will never know anyway.
Can anyone tell me where to find the fastboot drivers (win7 pro)
and how to enter fastboot mode?
I tried pwr+vol-down and got hard reset menu
pwr+vol-up rebooted to normal OS
adb devices does return
the serial number and
normal functions work
at regular boot mode.
I'd also like to know to reboot into recovery
[I did successfully use adb reboot recovery,
but hoped there was a button push to
enter bootloader or recovery]
adb reboot-bootloader and
adb reboot bootloader both
just reboot to normal OS.
thanks
I have rooted my LG Pheonix, and now am attempting to enter fastboot to flash CWM. I tried using adb command of
Code:
adb reboot bootloader
but that just rebooted my phone and didn't actually enter the bootloader. I also tried the power on while holding volume down, but that also didn't do the trick.
Anyone know how to do this?
I have a Fairphone (original) and I passed the wrong file to adb sideload (yep, feeling dumb right now).
The phone now will not boot. It goes into a boot loop, even if I take the battery out, and then boot while holding power and volume up to get to recovery, it still goes into a loop.
I even tried this script to see if there was a brief window I could get into adb to repair during bootloop, but adb never finishes waiting for the device even after about 5 consecutive reboots.
If I plug the phone in to charge, the empty battery appears, but then after a few seconds it goes into a boot loop too.
Code:
#!/bin/sh
echo "Waiting for device."
./adb wait-for-device
echo "Freeze!"
./adb shell stop
I can get into factory/test mode by holding Volume Down and Power. This seems to be the only state I can get the phone into that doesn't involve a boot loop.
Factory mode looks (mostly) like this picture (my screen shows english translation as well as mandarin):
vi8.info/pic/2014-01/Factory-Mode-Menu.jpg
While in factory mode:
adb can connect
adb shell gives me a shell, but su in the shell gives me permission denied, so no root access it seems
adb sideload says error, disconnected.
fastboot cannot see the device
adb reboot bootloader takes me back into a bootloop
adb reboot recovery takes me back into a bootloop
Is there anything I can do from here to flash a working ROM onto my phone?
I'm on a Mac. I can get access to a Windows machine in a week or so and will try SP FLash when I do, but until then, is there anything that can be done with Mac only?
Hello i tried to flash twrp recovery on my htc 820u but i think it didn't install. Phone was still working correctly until i tried to do a factory reset. Now it will just boot into recovery every time and i have only a black screen. the phone vibrates when i touch the screen but i cannot switch it off. when i reboot it just goes back to recovery.
Can anyone suggest something please? Is there a way to prevent the phone from booting into recovery?
PS: I'm on lollipop 5.0
Vivacity said:
Hello i tried to flash twrp recovery on my htc 820u but i think it didn't install. Phone was still working correctly until i tried to do a factory reset. Now it will just boot into recovery every time and i have only a black screen. the phone vibrates when i touch the screen but i cannot switch it off. when i reboot it just goes back to recovery.
Can anyone suggest something please? Is there a way to prevent the phone from booting into recovery?
PS: I'm on lollipop 5.0
Click to expand...
Click to collapse
You must not duplicate the post in different forum for the same topic.
Anyway, do it as follow:
1. Connect your device to the PC once it is booted into twrp recovery
2. Copy your Lollipop recovery to the device over adb: adb push recovery.img /external_sd/recovery.img
3. Run: adb shell
4. Run in shell: dd if=/external_sd/recovery.img of=/dev/block/mmcblk0p44
5. Run in shell: reboot
If the device reboots into stock recovery, press and hold vol up + vol down + power until the display goes black. Release the vol up button immediately (while still holding other buttons). Device will reboot into fastboot. Select reboot from the menu.
Hope you are back to business.
tomal said:
You must not duplicate the post in different forum for the same topic.
Anyway, do it as follow:
1. Connect your device to the PC once it is booted into twrp recovery
2. Copy your Lollipop recovery to the device over adb: adb push recovery.img /external_sd/recovery.img
3. Run: adb shell
4. Run in shell: dd if=/external_sd/recovery.img of=/dev/block/mmcblk0p44
5. Run in shell: reboot
If the device reboots into stock recovery, press and hold vol up + vol down + power until the display goes black. Release the vol up button immediately (while still holding other buttons). Device will reboot into fastboot. Select reboot from the menu.
Hope you are back to business.
Click to expand...
Click to collapse
thank you so much. that is much appreciated. hope if anyone else encounters this type of problem this will be able to help them.
tomal said:
You must not duplicate the post in different forum for the same topic.
Anyway, do it as follow:
1. Connect your device to the PC once it is booted into twrp recovery
2. Copy your Lollipop recovery to the device over adb: adb push recovery.img /external_sd/recovery.img
3. Run: adb shell
4. Run in shell: dd if=/external_sd/recovery.img of=/dev/block/mmcblk0p44
5. Run in shell: reboot
If the device reboots into stock recovery, press and hold vol up + vol down + power until the display goes black. Release the vol up button immediately (while still holding other buttons). Device will reboot into fastboot. Select reboot from the menu.
Hope you are back to business.
Click to expand...
Click to collapse
By any chance would you happen to know why the twrp shows black screen? it is still functionnal, would it be because of incompatibility with lollipop? and any way to fix it?
PS: it worked fine on kitkat.
Vivacity said:
By any chance would you happen to know why the twrp shows black screen? it is still functionnal, would it be because of incompatibility with lollipop? and any way to fix it?
PS: it worked fine on kitkat.
Click to expand...
Click to collapse
It goes in sleeping mode, you can disable this in settings=> screen=> enable/disable screen timeout (all in twrp)
---------- Post added at 03:22 PM ---------- Previous post was at 03:09 PM ----------
tomal said:
You must not duplicate the post in different forum for the same topic.
Anyway, do it as follow:
1. Connect your device to the PC once it is booted into twrp recovery
2. Copy your Lollipop recovery to the device over adb: adb push recovery.img /external_sd/recovery.img
3. Run: adb shell
4. Run in shell: dd if=/external_sd/recovery.img of=/dev/block/mmcblk0p44
5. Run in shell: reboot
If the device reboots into stock recovery, press and hold vol up + vol down + power until the display goes black. Release the vol up button immediately (while still holding other buttons). Device will reboot into fastboot. Select reboot from the menu.
Hope you are back to business.
Click to expand...
Click to collapse
What can I do when (for step 2) I do not have a recovery? Can I use one not coming from this Phone?
I did encounter the same "reboot to recovery bug" but I got it from updating the SU Binary.
Hope you can help me.
Hi guys, same problem here, with twrp apparently functioning but nothing displays on screen. Also, impossible to boot the device properly.
Tried the whole adb procedure mentioned above, did nothing as far as I can tell. Trying to reboot from fastboot leads to the HTC green boot logo, but no further... What should I try now ? Is it possible to inject a stock rom from HTC and where can I get it ?
Thanks in advance for your help.
thank you this helped me too
moonwise said:
Hi guys, same problem here, with twrp apparently functioning but nothing displays on screen. Also, impossible to boot the device properly.
Tried the whole adb procedure mentioned above, did nothing as far as I can tell. Trying to reboot from fastboot leads to the HTC green boot logo, but no further... What should I try now ? Is it possible to inject a stock rom from HTC and where can I get it ?
Thanks in advance for your help.
Click to expand...
Click to collapse
Same here! Please help!