download boot fail - Android Q&A, Help & Troubleshooting

I have a T9 (RK3328) TV stick, it got bricked. I searched the internet and tried many methods to recover it, but failed, please help if you know a better solution.
I used RKBatchTool to restore it, and got a blue square, but after I click "restore" button, it failed at "download boot fail"
I also tried RK Android Tool, my stick is loaded as "Found one MASKROM Device". I played around the tool, but every time it failed at the same reason "Download Boot Fail".
I have no ideas, anyone please help!

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LG D390n Error: boot certification verify

hello guys i'm new here...and i have a big problem with my LG D390n ... i don't know what its mean this
the phone don't start up.. i cand do nothing :/ i can't enter in download mode,or recovery mode or anything else
ERROR: boot cerification verify
[1200] -----------------------------------------
[1200]
[1200] Secure booting Error!
[1200] Cause: boot certification verify
[1210]
[1210]------------------------------------------
Please,please i need help,i can't do anything..it freeze when i try to make a factory reset.. :/ i need help please somebody
this is te image with the freeze logo and download mode
i.imgur .com/ YBWSYXd.jpg[/IMG]
i.imgur. com /1fELirH.jpg[/IMG]
LG D390n boot certification verify
hey,
I have the same problems with some additional "perks":
when accessing download mode:
1. DOWNLOAD MODE
loading........
keep holding vol+ until download appears
ERROR: boot certification verify
secure booting error
cause: boot certification verify
2. RECOVERY MODE
It accesses it but then stops on loading screen "factory reset processing..." and i have to take out the battery to turn it off
3. Computer does not recognize it. It recognizes every other phone and I've downloaded all the necessary drivers and c++ updates
4. I have tried: LgMobileTool, lgFlashTool...
And nothing works I've been trying to fix it for a couple of days now and i am slowly giving up on it so I'm asking you guys for a little help on this, does anyone has a clue what can I do with it other then throwing it in the neighbors front yard...
I would appreciate any suggestion or idea.
Black screen, boot error, demi god
You may flash your device using "LG Flash tool 2014" with a firmware for your device.
Search on xda for "LG Flash Tool 2014" and you'll get all the resources you need.
If this does not help, follow the tut posted on the following thread by me.
https://forum.xda-developers.com/android/help/help-bootloop-lg-l70-d320-t3304382#post70962321

Motorola G not bootable after rooting with KingRoot

Hey Mates!
I've been looking for a solution but cant find any helpful advices.
I have rooted my Motorola G 2 days ago, no problem. As soon as I rebooted it, it wont boot.
these are the errors that occur when I try to boot it
-hab check failed for boot
-failed to verify hab image boot
-failed to validate boot image
Fastboot Reason: Fall-through from normal boot mode
When I try to go to recovery, it says "no command".
Edit: It also says that my device is locked.
Meanwhile I've connected it with my PC and I tried to run the desktop version, but no changes so far.
I'd really need your help

Trying to fix Hard bricked Huawei. Help please!

Device is Huawei Ascend y600-u20
It's completely dead, it will only vibrate when holding the power button.
I'm trying to fix it with SPflash tools. but i'm encountering this one error
I can flash Preloader alone without any problem. but when i try flashing everything else or anything else it gives "BROM ERROR: ?? (8)"
Also I Can Format "whole flash", but when i try "whole flash except bootloader" i get this error: "BROM ERROR : S_DL_READ_PT_FAIL (5073)"
I have correct drivers installed, Correct Rom and have tried different versions of spflash tool. Also tried flashing without battery. same thing happened every time
any ideas what i'm doing wrong?

Trying to unbrick dead huawei! Help please

Device is Huawei Ascend y600-u20
It's completely dead, it will only vibrate when holding the power button.
I'm trying to fix it with SPflash tools. but i'm encountering this one error
I can flash Preloader alone without any problem. but when i try flashing everything else or anything else it gives "BROM ERROR: ?? (8)"
Also I Can Format "whole flash", but when i try "whole flash except bootloader" i get this error: "BROM ERROR : S_DL_READ_PT_FAIL (5073)"
I have correct drivers installed, Correct Rom and have tried different versions of spflash tool. Also tried flashing without battery. same thing happened every time
any ideas what i'm doing wrong?

No.1 M2 bricked sp flash tool error 4010

Hello
I'm new on this website, my name is François, and I'm french (sorry for my english).
I have a problem with my NO.1 M2 phone. Sunday 7, I'm using it, play with app, at the same time, I received a call and a sms. I answer call, after this I answer sms and come back on app. At this moment, my phone freeze, screen stay on, nothing work. I wait some minutes, unscrew back and shut down 1 mn with the switch. Restart and I only have the NO.1 logo.
If I start with vol+ , I have menu with recovery, fastboot, normal. I can't access recovery (never try before this problem). I access fastboot and try to flash with fastboot command, but I have this answer: "FAILED (remote: download for partition "tried partition" is not allowed. I try format, but "formatting is not supported for file system with type "raw data".
I try sp flash tool. I download the 3 firmware on official website. Driver are installed, sp flash tool see my phone like mediatek preloader usb vcom, or mediatek usb port (if I hold vol+ when connect).
Test with or without battery, change in spft option with, w/o, auto detect battery, download only, firmware upgrade, format all + download, nothing work. With download only, I have only "download DA" (100%) and after BROM ERROR: S_FT_DOWNLOAD_FAIL (4008). With upgrade or other, I have "download DA" next "format" and it's stay at 0% and message "BROM ERROR: S_FT_FORMAT_FAIL (4010).
I use a windows seven laptop, spft from link in post, try with and without xp compatibility, try 3 usb cable, all usb port from my laptop (4), It's allways the same.
I notice, I have this phone from april 2015, come with android 4.4. August 2015, I firmware update with android 5 from july download link, and work perfect all this time.
I have search some answer with my friend Google, try some version of SPFT, try with 3pc (two win 7 and one xp), but nothing work
Thank you for your help.
François
EDIT: Is it possible that is a hardware problem? Like EMMC dead?

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