Can't Unlock bootloader + Always rebooting - Nexus 7 Q&A, Help & Troubleshooting

Hi my friend have a Nexus 7 and had a problem, it cant boot, but after a few moment it reboots. So i tried to know what is the problem but i didn't find it, i tried to unlock the bootloader but it wont work ! So What can i do ?

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Unusual Problem

Hi all
I've softbricked my OP2, however the booloader comes back as locked, when i try to unlock it (via oem unlock) my OP2 hangs at the boot screen, any Ideas?
Try this https://forums.oneplus.net/threads/updated-29-03-2016-mega-unbrick-guide-for-a-hard-bricked-oneplus-2.347607/

URGENT HELP!! NEXUS 6P Bootloader stuck

Hi everyone,
I rooted my nexus 6p using Nexus Root Toolkit, the root was succesfull , then I went to recovery mode to flash the images for the new google assistant (im not sure if this is what cause it) , the device will turn on with this message "Your device software can't be checked for corruption. Please lock the bootloader." , then after 3/5 seconds it goes to a Google Logo wth a small opened padlock where th home button is. but it never fully boots, i can access the bootloader and get into the recovery mode, but thats all, how do i fix this, , will locking the bootloader on the Nexus Rootkit work?
Many thanks
Jacob

Can't fix bootloop VNS-L21C432

Hello
Thing is a few months ago, I've got this phone with broken screen and dead battery, so i've got those two few days ago, and fixed phone, but when i turn it on, it just restarts after HUAWEI logo.
I can enter recovery, tried factory data, but still same
I've tried dload metod with SD card with VNS-L21C432B131, it is updating, and i think it finish it, but again it won't start.
i can enter fastboot, bootloader is locked, and i'ts FRP locked, so can't realy unlock bootloader :/
I have downloaded this DC - Unlocker, and it gives me IMEI and Serial Nr, and also it says that now Firmware is VNS-L21C900B131
Has anyone had this situation? Can this be fixed?
Alsno, first time to see this DC-unlocker, is it sure that it would unlock FRP and Bootloader, maybe then i'll be able to fix?
Please help

S8 SM-G950F stuck on logo and FRP lock

Hello guys, after using his phone my girlfriend battery dies and when charged and power on again it's says FRP lock, i tryed flashing on stuck rom, but it always stuck on logo, i tryed a lot of rom versions and cant find one that works, tryed custom roms but i cant install twrp with FRP locked so i have no idea what to do to give it back to life. any solutions?

Can't get Huawei P8 into boot loader and fastboot

Tried to root the phone 5 years ago and the phone is stuck on bootloop. I recently tried to fix it. I cant get it into boot loader or fast boot, comands on abd arent working. Ive tried eveyrthing, just need some help getting the phone working.
GRA-UL00 model, purchased in 2016, been broken since 2016.
press to power button+vulome down button for 1 minutes , after 1 minute , the phone will reboot to fastboot . If not , the phone neds to flash a recovery or flash a boottloader or the phone already soft brick

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