Samsung Tab A6 - Bootloop with 'failure to mount /efs (Invalid argument)' - Samsung Galaxy Tab A series Questions & Answers

Hi, I'm having bootloop issues with my Samsung Tab A6. When I boot up, I see a blue screen saying "Installing system update", which then goes to a terminal showing the following errors, that imply some sort of filesystem issue:
{
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"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Unsure what exactly I did to cause it, it's been a while since I've used it.
Any ideas on what can be done?

zodac01 said:
Hi, I'm having bootloop issues with my Samsung Tab A6. When I boot up, I see a blue screen saying "Installing system update", which then goes to a terminal showing the following errors, that imply some sort of filesystem issue:
Unsure what exactly I did to cause it, it's been a while since I've used it.
Any ideas on what can be done?
Click to expand...
Click to collapse
Pretty much points to a failed emmc.
I'd install twrp and try formatting all those partitions and then try and install the stock firmware.

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[HELP] Problem with custom Recoveries PLEASE HELP

Hi xda
i have a Galaxy S5 G900f Knox 0x1
my problem is with custom recovery whenever i try to flash custom ROM's i get stuck at the boot screen and the phone never boots
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
i tried cwm recovery and twrp both gave me the same problem
however when going through the flashing process in both recoveries neither one of them gave me any errors the flashing goes smoothly till i restart the device then i get stuck
i noticed something after flashing customs and get stuck i can reboot to recovery and when i go to mount and storage
system, data and cache all are unmounted i try to mount them but when i restart the device they get unmounted!!
- could this be the problem?
- any solutions?
HELP PLEASE

Help! Bootloop / Booting failed

My friend asked me to fix his Nexus 7.
I've never tried fixing one of these from boot loop's ect so I need help.
All I get is the Google logo then the volume buttons to start/restart/recover ect ..
Whichever I press I get a small message in the corner saying "booting failed"
As you can see from the image below, I can get into this screen.
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
I've tried the Nexus Root Toolkit but I keep getting errors,
I have also watched hours of video's and read thousands of lines of tutorials on how to fix it, but obviously I can't !
So, any help/guidance is highly appreciated !

Samsung Galaxy Note FE (E:Failed)

Hello,
I have an Samsung Glaxy Note FE, with Android 8 updated OTA, never ROOTED. The Issue is that i receive this error after Wiping Data and Cache: "E:Failed to clear BCB message:failed to find /misc partition"
Why appear this error and what should i do next?
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
I would try to flash a full oreo firmware in odin, that should restore misc partition too
I tried many times, even changing the country of firmware. Some said to me that this is not an issue and doesn't affect the useability. Maybe with Android Pie it will be removed, who knows.
I have the same problem. In fact, my FE is rebooting repeatedly, and I can't flash the newest stock rom with Odin 3.12. Every time I tried to flash, it rebooted automatically. I don't know why and how to fix it...

Samsung S7 Edge -TWRP /data Error

Error started from Flashing Kernel though i flashed same kernel before and it worked fine.
its showing 'Failed to mount '/data' (Device or resource busy)'
I tried Changing file system in Advance Wipe but same error showing.
It Showing internal Storage 0 and also /data size 0
Whatever I'm going to do its showing same error.
I'm also unable to go to download mode or power off the phone. its going back to TWRP
I used LineageOS 16.0 before and was going to Flash same rom with Morokernel.
Thanks in Advance if any expert help me
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}

"couldn't load bitmap....failed to open...." errors in Tab (SM-T550) recovery mode

"couldn't load bitmap....failed to open...." errors in Tab (SM-T550) recovery mode
Hey all,
I'm seeing some strange error messages inside the Recovery Mode of my Galaxy Tab A (SM-T550):
"E: couldn't load bitmap pocchange_00009 (error -7)"
........
"E:failed to open /dev/block/boot/device/by-name/misc: no such file or directory"
- please see attached photo of screen.
Important to note that this tablet has never been rooted or had a custom recovery or rom put on.
Stock all the way.
I tried a factory reset and even flashing the original firmware via Odin.
Unfortunately neither of these made these weird messages disappear.
Any ideas??
Sorry for the push by myself but I edited the original to include the error messages in text.
and here's the image again
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}

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