yashsingh1/xdaforums huggingface dataset:
[Galaxy Note 4 Q&A, Help & Troubleshooting] 3kgt:
Samsung 64Gb class 10 ... no problem here!
[Galaxy Note 4 Q&A, Help & Troubleshooting] equlizer:
Using a Kingston 64gb UHS-I U3 with no issues. Before i was using a regular 16gb class 10 and had some lag. The difference was night and day.
[Galaxy Note 4 Q&A, Help & Troubleshooting] cavags5:
Hi

I have a Samsung 32gb EVO class 10 48mb/s

What i notice some difference is in my S5 the gallery opens very fast and now i have note 4 for 3 days and its not fast to open like in S5.

Even the difference in everything from S5 i don't notice the note 4 more fast.

The only thing note 4 does better is multitasking. And doesn't heat much.

Sent from my SM-N910F
[Galaxy Note 4 Q&A, Help & Troubleshooting] Synthaxe:
128GB Lexar 633x. Very happy.
[Galaxy Note 4 Q&A, Help & Troubleshooting] macmobile:
Sandisk 64gb class 10. About two thirds are full already.
[Galaxy Note 4 Q&A, Help & Troubleshooting] Keladeine:
Me too! 128 Samsung card. I feel like SanDisk kept heating up my phone too hot. Added an extended battery and now I feel like a superhero. This thing is a beast. How will I ever go back to the no-sd-no-removable-battery kind of life?

I'm not even a gamer. Nandroids and titanium alone take up 30 gb. My work files, my entire music library, this is the perfect little satellite for life. I'm a freaking walking cloud storage service. It's awesome.

Sent from my ever faithful SM-N910T
[Galaxy Note 4 Q&A, Help & Troubleshooting] phrsoft2003:
Samsung 128 GB SDXC UHS1 - because it was the cheapest.

I use the internal memory for apps and put all the data (pictures, music, videos, books, documents etc.) on the card.

There is some truth that reading from the card is slower than the internal memory, but it's only noticeable in some rare cases (like having 3000 files in the same folder). Samsung's claim for leaving the card out of the S6/Note5 is not valid. For example since updating to 5.1.1. switching between apps is really near instantaneous, so it depends more on how well the software was written.
[Galaxy Note 4 Q&A, Help & Troubleshooting] slaybad:
I am using san disk 32GB class10 MicroSD card no issues till now
[Thinkpad Tablet General] njking25:
So after flashing the new lollipop update I found myself stuck in a bootloop unable to get into the android operating system at all. I used flashboot and the intel flash tool to try and restore to an older ROM. It forze at 91% with an "error:unable to mount /data" I then used the root tool to try and sideload and install the update.zip from adb shell. No luck. When I rebooted I got to a strange efi menu. Looked around, and it gives me the option to install with with windows?

Anyone have any ideas. I'm waiting for radio shack to open, its the only local place that sells USB otg cables locally.
[Thinkpad Tablet General] njking25:
Here are the photos
[Thinkpad Tablet General] workdowg:
That is something interesting. It is asking which os to boot to, not install.

I'd like to know how you got into the bios? I am looking for a way to install Linux....
[Thinkpad Tablet General] workdowg:
Did you get this figured out?
[Thinkpad Tablet General] dreamnewbie:
I can see "fast boot" enabled. Have You tried to switch it off? any other menu is displayed?

Have You tried to "power+vol down" on it?
[Thinkpad Tablet General] zach181:
I've tried a few ways to get into the BIOS shown... all failed.

Maybe the only way to trigger the BIOS to show is to fully wipe/format the internal storage so the BIOS can't pick up droidboot or anything else. Quite risky though if it isn't the way.

I'm in no way telling anyone to do this and I have not tried it myself. I'd be curious to hear from any advanced users if they have ever completely wiped the internal memory and what options would be available to restore if things did go wrong.
[Thinkpad Tablet General] workdowg:
This guy seems to have stumbled on it also. I flashed the stock kk firmware and I am trying to do it but can't get Lollipop update to work. But it won't boot after it fails so I am reflashing KK again.

http://xdaforums.com/showpost.php?p=60490907&postcount=578
[Thinkpad Tablet General] zach181:
Thanks for the link workdowg,

I'm still trying to work out how they did it. Could do with a step by step and whatever files needed uploaded and linked to. Also the bit about not using windows startup programs.
[Thinkpad Tablet General] workdowg:
If you try it do let me know. I need to get into the bios to get started on a dual boot to Linux on this bad boy...
[Thinkpad Tablet General] zach181:
I will let you know.

I just asked for the OP to clarify a few things before I go ahead. I may try Linux first with Windows 8/10 being the final install.
[Thinkpad Tablet General] dreamnewbie:
So... conclusion. we have to damage firmware to boot efi... :)

If we could swap img file before upload to tab (during this 25 second wait) we could make windows installation possible. Am i right?
[Thinkpad Tablet General] workdowg:
[MENTION=4821597]social-design-concepts[/MENTION] suggested we should try to change the boot order using efibootmgr. I've been communicating with him. Here is the post in the Venue thread... http://xdaforums.com/show...postcount=2083
[Thinkpad Tablet General] zach181:
Links giving 404
[Thinkpad Tablet General] workdowg:
here it is again... http://xdaforums.com/showpost.php?p=61108700&postcount=2083 it got truncated.
[Thinkpad Tablet General] zach181:
Thanks workdowg.

It seems it's not as clear cut as first thought. Mind you, I didn't expect it to be. I did try a HP keyboard with OTG in Android and that got picked up ok (No lights on keyboard)

I'm a bit in the same mind as Social-Design. I'd rather have a definite way to restore Android from a totally blank internal drive before I have a go. Just up to page 214 in the thread so it may be covered later.
[Thinkpad Tablet General] Yosha1:
UEFI soft brick?

Hi guys,

I accidentely tried to use the firmware on my 1050 as described in this thread. I can indeed load the UEFI BIOS with all its settings (even though most don't do anything). But unfortunately, I cannot load any OS. I always get the error "EFI Harddrive failed" - meaning it cannot boot fomr hardrive.

I have used an externally powered USB-HUB with mouse, keyboard and USB-Stick and connected to the 1050 via OTG-cable. If the stick is bootabnle with GPT x64 then it will boot from that stick. All 64bit windows versions that I tried failed to install with "ACPI_BIOS_ERROR". 32bit windows would not start, because the GPT is 32bit and the BIOS does not recognise it.

The best success I had so far was to copy a ISO from android-x86 on the usb stick. It will boot in live-mode from the USB. Not so suprisignly, mouse and keyboard are working, touch isn't. WiFI is working and the SD card is detected. I tried to install this version of android on the harddrive which works, but it installs the EFI GRUB bootloader which is not recognised by the BIOS.

I can also access the UEFI shell.

Unfortunately, I am running a bit out of ideas of what to do in order to get a normal system (or firmware) back. ADB-drivers obviously don't work (the Intel SoC driver is installed as well), so I cannot use the Phone Flash Tool.

Any ideas would be greatly appreciated. :)
[Thinkpad Tablet General] social-design-concepts:
You can get it to boot from USB? Get someone with to use tethered twrp and get a backup of the esp and fastboot partitions.

I have 2 things you can try if the goal is getting back to booting stock Android.
[Thinkpad Tablet General] dreamnewbie:
Have You tried booting any x64 linux iso from flash drive?
[Thinkpad Tablet General] Yosha1:
Thank you for your fast reply.

I just tried that with an Ubuntu Desktop Distro. It boots up from teh USB drive, keyboard and mouse are present. Wifi, sound, touch don't work but I can see the internal Harddrive and the sdcard in the file exsplorer.
[Thinkpad Tablet General] social-design-concepts:
extract and dd this to a usb drive and see if it is able to boot it View attachment 3415895 if it successfully boots replace the fastboot.img thats on the thumbrive with one for your devices and see if it boots. if your fastboot.img is named droidboot.img rename it to fastboot.img.

If you can successfully get your devices droidboot/fastboot.img to load you can then disconnect the usb-otg cable and reconnect it to your PC and use the phone flash tools to restore your device completely.
[Thinkpad Tablet General] Yosha1:
Thank you very much ! I booted with the image you provided and it comes up with a big intel image, saying "Bootoloader Error Code 04" - "Press up to start", " down to turn off". It gives a warning about UEFI is being unlocked.

I copied three different droidboot images to the stick and renamed them to fastboot.img, as you suggested. All of them fail with the error "Fastboot image not verified" and, in red: "Sequence not found".

:(
[Thinkpad Tablet General] social-design-concepts:
Hmm. Can I see a picture of that. It booted the userfastboot though?

Then try taking the esp.img and dd it to usb disk and seeing if it boots. This won't get you droidboot but might get you a black screen with fastboot starting or cmd waiting if so replug it into the PC and see if it detects as an fastboot device
[Thinkpad Tablet General] Yosha1:
Thank you for your help!!!

I made two images, but cannot find out how to attach them and am not allowed to post links yet. So I had t put them on a different host:

i.imgur.com/MBwoFLG.jpg

and

i.imgur.com/lnDpSHp.jpg

Unfortunately, that did not work either, because the esp.img doesn't have a bootx64 in the boot-folder, only bootia32, which is not detected by the BIOS.
[Thinkpad Tablet General] social-design-concepts:
And this is the same esp that if from the last ota, your device more than likely had a 32 uefi to start then with 5.x.x ota would more than likely have updated the uefi to 64bit which should of contained the esp with the 64bit loader,

The S8-50F is like this the current firmware is 32bit the buggy leaked lollipop ota has 64bit maybe you need someone with lollipop to backup the esp for you.
[Thinkpad Tablet General] workdowg:
Here is a dd of lollipop esp partition. https://www.androidfilehost.com/?fid=24052804347779874
[Thinkpad Tablet General] Yosha1:
Thank you so much! That actually got me into Fastboot mode and I am able to connect to my PC. It recognises the device. Yeah :)

When I trying to flash it with the Phone Flash Tool, it starts to flash (i think it was called) the EfiLinux. On the PC it sais:"Device is rebooting", but on the tablet itself, it says:"Efi hard drive not found" and jumps back into the BIOS without rebooting.

To make sure there is no rubbish on the HardDrive I rebootet with USB into Androidx86, because it starts Gparted, reformated the HardDrive with FAT32 and installed Androidx32 on it (With Efi Grub). It can boot from the harddrive without problems. [This is a bit dangerous as the EFI HardDrive is always the first boot option even if you change it in the Boot-setting, but by exiting GRUB, it falls back into BIOS from where I can get it to boot from USB].

Any ideas are greatly appreciated :)
[Thinkpad Tablet General] dreamnewbie:
You have created one Fat32 partition on Yogas flash?
[Thinkpad Tablet General] social-design-concepts:
Post the droidboot.img for me and the xml file for the flash tool
[Thinkpad Tablet General] leonidslv:
when to turn off the tablet press Vol + and VOL- the same time the power button, the display shows "Fastboot Starting". You can connect your Phone Flash Tool status DTX .. What can be done?
[Thinkpad Tablet General] Yosha1:
Hi all,

thank you again for your help.

Here you go:

https://mega.nz/#!RFclSZSB!nkTSWkBGSibxfDMZZm9PxcTrcJ5Poyn3bl49yFUnUdQ

I used the droidboot and flash.xml files from the "YT2-1050F_S0187_150324_ROW" and the "YT2-1050F_S0198_150422_ROW" (kitkat) version which I found on this forum.

I don't know if it is important, because i don't know what it means, but the Phone Flash Tool sais, that the device is in DNX mode (not DTX).

Yes. When I boot the device from teh USB drive using Ubuntu x64, I can use GPARTED which shows one device. In there I can create partitions, erase everything and put a GPT in.

As I stated, I installed Android x86 on the harddrive. It boots into Grub EFI and then it boots the android system. (This device feels more and more like a PC :) )

I didn't know that, but that works for me as well. So, I can boot Fastboot without loading it form an external USB device.

Since I have a complete LInux on teh USB drive and can load data from the SDCard, would it be possible to dd a complete image (like boot, recovery and system) to the harddrive, or could I create three partition and dd those images on there? I see a couple of shell scripts (like in a easy image zip file); could that be of any help to flash on the harddrive?

Kind regards
[Thinkpad Tablet General] leonidslv:
YT2-1050F_S0198_150422_ROW this kit kat
[Thinkpad Tablet General] Yosha1:
Thanks. I corrected that in my previous post :)
[Thinkpad Tablet General] social-design-concepts:
fastboot flash osloader bootx64.efi

fastboot boot fastboot.img

that should be enough to get you into droidboot from the fastboot starting screen.
[Thinkpad Tablet General] bjanice44:
Hi all. I've been watching this thread because I seem to have the same problem after lollipop update attempt. I will describe the issue and would be grateful for any tips.

830F yoga tablet 2

Tried to do the lollipop update. Now the tablet only will boot into what looks like efi she'll. When the tablet first starts I get a efi boot fail message and some thing about a hard drive. The message comes and goes fast so hard to read. Then it goes into the efi shell.

When I press vol + and volume - and power I can get to a screen with the messgae "fastboot starting ..." Then it hangs there.

On the fastboot starting.... Screen I can get the tab recognized by the phone flash tool but in "dnx" mode. When I try to flash it gives errors then reboots into droidboot. In droidboot it tries to continue flashing but then errors out. I would like to be able to reflash everything but am stuck. Screen shots attached.

Any ideas or tips? Thanks
[Thinkpad Tablet General] leonidslv:
you loaded droidboot? I just reloaded UEFI. Wait for the official 5.0.1 firmware (not OTA)
[Thinkpad Tablet General] bjanice44:
Added some screenshots. Even though I get into droidboot it only goes into it as a result of beginning to flash with phone flash tool at the "fastboot starting ..." Screen. In flash tool it says rebooting into provisioning OS. Goes into droidboot then fails some more. When I try fastboot commands in droidboot from a command prompt.. Nothing works even though the device is recognized.
[Thinkpad Tablet General] social-design-concepts:
I've not seen your phone flash tool XML config file , but when you HDD get corrupt you have to use droidboot to repartition and format the partitions before you can flash images.
[Thinkpad Tablet General] bjanice44:
Ok. Do you know how I would go about repartitioning and formatting in droidboot?
[Thinkpad Tablet General] social-design-concepts:
you are able to get into droidboot? past the fastboot starting screen?

fastboot oem start_partitioning

fastboot flash /tmp/partition.tbl partition.tbl
fastboot oem partition /tmp/partition.tbl
note : if you dot have the partition.tbl file most droidboot.img stash a copy under system/etc/ so you could do fastboot oem partition /system/etc/partition.tbl

fastboot erase system
fastboot erase cache
fastboot erase config
fastboot erase data

fastboot oem stop_partitioning

fastboot flash ESP esp.img
fastboot flash fastboot droidboot
fastboot flash boot boot.img
fastboot flash recovery recovery.img
note : recovery.img is optional if you don't have a copy this should be rebuilt by android on boot anyways
fastboot flash system system.img

if you get errors post screen shots of droidboot
[Thinkpad Tablet General] Yosha1:
Thank you again,

I managed to do the steps you just posted this morning. The partitioning, erasing and flashing worked fine for me. When I try to boot, I get the usual error "EFI Harddisk failed". In the "Boot Maintenance Manager" the ESP partition comes up and when I have a look inside there are two folders (Boot and Intel)

The file structure is:

<EFI>
<Intel>
<Data>
warmdumb.efi
efilinux.efi
<BOOT>
bootia32.efi

I figured out already, that the tablet in its current state is not able to boot booti32.efi only bootx64.efi
[Thinkpad Tablet General] bjanice44:
Here's the deal with droidboot for me. When I do the vol +- & power I get to the fastboot starting .... Screen. Then if I go into Intel phone flash tool it recognizes the tab in dnx mode. If I then start to flash with flash.XML. It tries to start flashing in dnx mode then there is an error (see screen shot) and the flash process then says "rebooting into provisioning OS"... That's how i get into droidboot.

I will try the fastboot commands you posted and will report back. Thanks
[Thinkpad Tablet General] social-design-concepts:
the esp file you flash is from lollipop? the one posted earlier has both the 32bit and 64bit? what are you flashing? kitkat or lollipop?
[Thinkpad Tablet General] Yosha1:
I did it with:

fastboot flash osloader bootx64.efi
fastboot boot droidboot.img

That brings up droidboot for me. When I start the Phone FLash Tools, it says it is in state P not in state DNX anymore.

I ended up not using the flash.xml files, instead typing the command directly in the command prompt. The flashboot that is on the tablet does not recognize certain command (like unzip) which is in the flash file and therefore stops.
[Thinkpad Tablet General] leonidslv:
Yosha1, I can not connect a keyboard and a USB flash drive. How do you do?
[Thinkpad Tablet General] Yosha1:
You will need an externally powered USB hub.

---------- Post added at 06:40 PM ---------- Previous post was at 06:34 PM ----------

Hmmmmmm...that's a fairly good question :)

I have the following

Update.zip, which contains the efi 64 bootloader and droidboot from this post

This is how i get into droidboot. But the update.zip dows not contain a ESP.img (only a esp.zip).

Then I have

YT2-1050F_S0198_150422_ROW (which is kitkat). This one contains all images and flash.xml files but the esp.img has only the 32 bit version.

I also have

YT2-1050F_S0187_150324_ROW (which i believe is lollipop ???). But the esp.img is the same as the one above.

And I have:

yt2-1050f_usr_s000143_1501051823_ww21_row (which contains only boot, revocery and system images).
[Thinkpad Tablet General] social-design-concepts:
Flash the dumped lollipop esp.img a few pages back and the lollipop boot droidboot and system.img
[Thinkpad Tablet General] bjanice44:
From the fastboot starting... Screen and I run these commands

fastboot flash osloader bootx64.efi
fastboot boot droidboot.img

I get the screen shot below. So the only way I can get into droidboot is via that convoluted way I mentioned before. However, when I do get into droidboot through that method none of fastboot commands work. Not sure what to do now.
[Thinkpad Tablet General] Yosha1:
If you have a keyboard attached, have you tried typing "exit" in the UEFI shell.? It should continue to boot. Or you could try and change the boot order in the boot maintenance menu (but that requires a keyboard as well).

Does the droidboot show any kind of error?
[Thinkpad Tablet General] bjanice44:
Can't get a keyboard working with it. The only error is what I showed in the screenshot.
[Thinkpad Tablet General] leonidslv:
What usb hub you use? I, too, with power but not running.
[Thinkpad Tablet General] Yosha1:
Thanks. I loaded the ESP.img from lollipop form this post.

A flashed the rest from the lollipop as you suggested.

On the booting screen I get "EFI LINUX ERROR [target_from_inputs:316] Reset source couldn't be retrieved. Falling back in TARGET.BOOT"

After 1 minute the tablet reboots and shows the same error.
[Thinkpad Tablet General] Yosha1:
It's from Belkin. I don't know exactly what kind, because I found it at work. I attach a picture with it on the lower left and running Ubuntu x64 from the attached USB drive.
[Thinkpad Tablet General] leonidslv:
What's new? Any progress?

esp.img took here as boot.img and droidboot.img of OTA Lollipop and replace these files YT2-830F_S0195_150422_ROW (kitkat). Launched Flash.xml Phone Flash Tool and received a 92% error in the flash /data/easyimage.zip

Now Loading Droidboot !!!!

I understand the need to wait for the ROW firmware 5.0.1 that would bring it to success?

[IMG="droidboot"]http://cs4-1.4pda.to/6589443/IMG_20150727_030000.jpg?001bc2a22e35cb9e55b584c0000000001a4cb65b0e604e32adc0a3cb61f9abc7[/IMG]

P.S. sorry I did not know English well
[Thinkpad Tablet General] Yosha1:
Hi guys,

this will be my last post :eek:

After reading the instructions from this post under the section "lollipop version is downgrade to kitkat", I donwloaded the zip file and had a look at this picture. I have the Yoga Tablet 1050F, so I chosed the firmware file shown in the image.

The downgrade went fairly easy by using fastboot on the command line:

fastboot flash capsule flash-LtoKK-PVT-810.kv

I think the capsule is the firmware. In other downloads I found the file capsule.bin. Some I tried as well and they are usually up- or downgrading the intel firmware.

BE EXTREMELY CAREFULE WHEN DOING THIS! A WRONG FILE CAN HARDBRICK YOUR TABLET!

After the firmware update was completed, I was able to get into droidboot (using Vol+ and Vol- and Power) or into fastboot (using Vol+ and Power) during boot. The droidboot 2.0 that has been installed understood most of the commands in the flash.xml (like unzip etc.). I did not manage to load the system.img but I managed to get into Recovery Mode .

Because I was distracted for a minute, I accidentaly flashed the wrong firmware file (flash-LtoKK-DVT-810.kv instead of PVT), I completely bricked my tablet, but blessing in disguise, Lenovo Service replied to my enquiry I send them a couple of weeks ago, saying they are happy to repair the tablet under warranty for me.

So, that's it from me. I hope I was able to help and support you guys a little bit and special thanks to the members of this board who, so quickly and willingly, supported me. During this little excursion, I certainly learned a lot about UEFI and fastboot, i.e. I found the manual of the Z3600-3700 Intel chips, that explained a lot of things regarding the BIOS settings. I read the fastboot source code to understand what its doing and so on.

I'll stay subscripted on this thread for a while out of interest, but obviously I cannot help annymore.

Take care
[Thinkpad Tablet General] leonidslv:
It is a pity, you gave a lot of good ideas!
[Thinkpad Tablet General] leonidslv:
Can anyone realties write in detail how to flash the bios on the old version?
[Thinkpad Tablet General] vampirefo:
Can't your device boot Linux from usb?, I too have been trying to find away to get into my bios, well I actually did thanks to Dell Venue10_5050, lol. getting into bios wasn't needed for me to boot Linux though, I just wanted to see the bios.
[Thinkpad Tablet General] leonidslv:
I restored 4.4.2 Kitkata !!!! Thank you all !!!!!!

http://xdaforums.com/showpost.php?p=62060611&postcount=657
[Thinkpad Tablet General] workdowg:
I had a bum usb hub. I got a different one and tried a couple times with Arch with formatted usb stick to mbr and then tried gpt. I am going to give Ubuntu x64 a try. Some people have linked bootia32.efi from the asus t100. I'll try that too.

Right now I'm on Lollipop and the upgrade removed droidboot and replaced it with what looks like the standard Intel iwfi fastboot. So now I'm unsure how to approach this. 32bit or 64bit?

The reason I wanted to get into the bios was to change the boot order. I tried using efibootmgr but it doesn't change it, it only displayed the info.
[Thinkpad Tablet General] vampirefo:
Mine boots 64 only, cool if yours boots both.

Anyway for me to get into bios, below might help you might not.

adb reboot dnx

fastboot boot droidboot.img