G3 problem - Sprint LG G3

While trying to install a clock face, flashify came up to install and when I hit boot up my phone froze with "(730)fast boot mode started" in upper left hand corner. Can someone help me with this problem?

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[Q] Help! Android won't boot, stuck in recovery mode!

Thanks in advance for your help! So today I successfully rooted my Droid Razr M. I attempted to install the custom ROM Slim Bean. Unfortunately, it doesn't seem that installation completed properly and when the phone tried to reset after the installation, the fastboot screen came on and it said "boot failure." I was able (by pressing the power, volume + and volume - buttons) to get to a screen where I got a few options, one of them being
"Recovery." I clicked on this, and the screen went to an android robot lying on its back with a red triangle above it and an explanation mark (I believe this might be Android attempting to enter recovery mode). However, the phone gets stuck in this screen and I get no where.
I'm afraid I might have bricked my Razr M. Any help on where to start would be much appreciated.

Phone wont boot.

So i rooted my phone, instaled super su then rebooted everyting ok,.then i used flashify to flash recovery (the one in CM site)rebooted the phone but now it wont boot just start a litle with samsong logo and a smal inscription "bootin recovery" in the top left side of the screen just fir tow second. Don't know if i've done something wrong but if someone can help please do.
ilmentor said:
So i rooted my phone, instaled super su then rebooted everyting ok,.then i used flashify to flash recovery (the one in CM site)rebooted the phone but now it wont boot just start a litle with samsong logo and a smal inscription "bootin recovery" in the top left side of the screen just fir tow second. Don't know if i've done something wrong but if someone can help please do.
Click to expand...
Click to collapse
Are u able to boot into download mode? If so, flash stock rom via odin n see if that helps
Unable to boot into download mode, plus the phone doesn't show on my pc. And it always try to boot into recovery even if i just press power button or power button+home button +volum key down.
Phone booted finally, just left the battery out half an hour.

Applying custom recovery went wrong

I apply custom recovery for my Samsung SM-G355H. While I just reboot my phone. I use (twrp) root manager app after downloading the file it show on pop and ask reboot in this case something went wrong and it shows one red exclamation on top left corner and the screen became white. I remove the battery and turn -on the phone it's on but after that I went to recovery mode it shows the red exclamation on top left corner recovery mode has been gone
So please help guys iam so[emoji17] [emoji25]
gowtham02 said:
I apply custom recovery for my Samsung SM-G355H. While I just reboot my phone. I use (twrp) root manager app after downloading the file it show on pop and ask reboot in this case something went wrong and it shows one red exclamation on top left corner and the screen became white. I remove the battery and turn -on the phone it's on but after that I went to recovery mode it shows the red exclamation on top left corner recovery mode has been gone
So please help guys iam so[emoji17] [emoji25]
Click to expand...
Click to collapse
maybe you are in download mode, try this method. Follow any one tutorial. :highfive:

stuck in boot screen, and have a weird green, red, blue screen

Hey guys hope you're fine ^^
A friend of mine is having an issue with his phone so he asked me for help, and now i'm asking you lol
well the problem is that :
1- having a weird colored screen on startup (1st attached image)
2- after few second the phone just get stuck on boot animation (2nd attached image)
3- sometimes the phone goes into and update screen and then get stuck on 5% and after a while reboots (3rd attached image)
4- the phone just wont shut down it when i hold the power button the screen goes black, then instantly i feel a vibration and the multicolored screen comes back, then the same story "boot loop"
Well now let me tell you how this problem occurred, well my friend bought this phone from someone, so he doesn't know if there was custom recovery ever installed on this phone or if it's on stuck recovery
the phone was working fine, then one day an update notification pops up, he does the update, the first time it showed him an error message, but he tried one more time and it got throw the update process, unfortunately the phone got rebooted but never made it past the boot screen
now because the phone won't shut down, i can't get into fast boot or recovery mode (i don't know how to do that unless the phone is shut down, and doing the volume/power button combination)
i'm really stuck here and don't know what to do, i'd really appreciate your help guy
PS: sorry for the English, that was the best i could do
EDIT : i managed to get into fastboot mode,yeeeey! (see the 4th attachement)
how did you get into fastboot mode
i am not able to do it

Need help with my soft-bricked LG l90

I'll get straight to the point, yesterday I went and re-rooted my phone with Kingroot (I had already rooted it once with Kingroot) to try something called Magisk, and basically what happened is that I installed Magisk manager and selected the 3rd option to install it (can't remember the details), I am new at this sort of stuff but I knew it would be risky without some sort of recovery mode installed.
Next thing I know the phone shows the LG logo like normal but with an error message on the up left corner of the phone saying:
"ERROR: boot certification verify
[880]--------------------------------------------
[880]
[880] Secure booting error!
[880] Cause: Boot certification verify
[880]
[880]--------------------------------------------"
And then the screen goes black it doesn't really shut down because it takes me about 10 seconds of holding the power key which is force reboot instead of the 2-3 second hold.
I've been trying to get solutions for this around the forums but nothing works as I don't know my exact model number.
I would appreciate some help and thanks in advance!

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