yashsingh1/xdaforums huggingface dataset:
[Asus Transformer TF700] Artimis:
I have a few questions:

1) Why is it necessary to reflash the ROM if we aren't making any changes to the /system partition? For reference, I am running CROMI-X 5.4

2) Am I able to restore /data from a nandroid after converting to F2FS in order to get may tablet back to my existing setup? Or will it be incompatible at that point?

3) If I'm already running the _thatv11 kernel, am I ok to go or do I need to reflash the kernel for some reason?
[Asus Transformer TF700] berndblb:
1) Watch the installer script: Quite a few apps, their libs get installed to /data

2) http://xdaforums.com/showthread.php?p=59415954

3) format data, convert to f2fs, reflash the rom, flash _thatv11, restore data from nandroid. Could work, but no guarantees. I do not restore anything related to apps and their data anymore - too many potential conflicts
[Asus Transformer TF700] unil:
Hi,

I'm on CROMIX 5.4

I've installed twrp 2.8.6.5 kang version in order to convert /data to f2fs.

Following the recommandations (step3), I've tried to Format data in wipe menu.

The console said "Simulating actions... Updating partition details....done" and said Data Format Complete Successful

I last only 2 secondes instead of 60 min mentionned...

When I check on Data, everything is still here, nothing is formated....

So I've decided to skip this part and go to step 4 of this guide: convert to f2fs

I've swipe to change Data to f2fs and one more time the console says:

"Simulating actions... Updating partition details....done" and said Format Complete Successful

This took only 2 sec.

And when I check, Data is still in ext4...

I'm sure I've missed something?

Could someone help me please?

Thanks

Unil
[Asus Transformer TF700] _that:
Turn off "Simulate actions for theme testing" in Settings.
[Asus Transformer TF700] unil:
Thanks !!!

Works perfectly...
[Asus Transformer TF700] Artimis:
I am happy to report that I am now on CROMI-X 5.4 using F2FS after restoring data and everything is running very smoothly. The only caveat was the _thatv11 kernel did not work -- the /data partition would not mount and I was getting the "Encryption Unsuccessful" error message upon boot. This was fixed by flashing the _thatv10 kernel modifed by sbdags here: http://xdaforums.com/showpost.php?p=53769336&postcount=5388

Since I run everything off internal storage (no rom2sd or data2sd -- or even using a microSD at all), this works out.

The process I used was

1) Boot into TWRP while connected to a PC

2) Make a full backup (nandroid)

3) Copy everything from internal storage (including the back-up) over to the PC using MTP since this is supported in the modified TWRP you posted.

4) Did a full Data Format

5) Converted /data to F2FS

6) Copied everything back over from PC to internal storage using MTP

7) Nandroid restored the /data partition only

8) Flashed the modified _thatv10 kernel I referenced.

The end result = everything working exactly how it was before only much faster with F2FS. Quadrant (which isn't the best indicator) is showing benchmarks at 1000 points higher which is a 20% improvement over what I had before (I run with FSYNC enabled).

Thanks for all the help!
[Asus Transformer TF700] kevinthefixer:
Just a little addendum--we have found and confirmed a bug in TWRP 2.8.6 also, for both TF300 and TF700. It will not power down or reboot system or

bootloader, it will only reboot into itself. One more reason to use lj50036's Kang TWRP, available for both the above tablets.
[Asus Transformer TF700] berndblb:
Good point. OP edited accordingly. thanks
[Asus Transformer TF700] Artimis:
So I ran into my first issue as a result of using this method and thought I would post resolution here for anyone that runs into the same problem. After running the tablet for a few days, I realized that all downloads were failing, TiBu backups were failing, and trying to write data to any folder on internal storage would fail. Writing data to the root of /sdcard (/data/media) would work just fine though.

As it turns out, transferring all data back to internal storage via MTP screws up folder permissions -- it's apparently a known issue. For anyone running into this issue, I used Step #2 here to resolve the issue:

http://xdaforums.com/google-nexus-5/general/sdcard-problems-upgrading-android-t2938749

For the part mentioning using root explorer to fix the permission of the Download folder, make sure you go through /data/media to do it. If you go through the /mnt/sdcard or /storage/emulated/legacy it won't let you change permissions.
[Asus Transformer TF700] jacobsensei:
So, Does everyone with a successful conversion feel a definite performance upgrade?

Thanks...

the ONE
[Asus Transformer TF700] LetMeKnow:
I am running f2fs on the external SD since it first came out for the tf700. I am still running it and working perfectly fine for more than a year without any corruptions on my tf700. I also running f2fs on the internal SD for more than six months as an experimental testing and it is still running fine too. So I think that f2fs on both internal/external is very stable at least on my tf700. You have to try it out and let us know if it is running stable on your device, good luck...:fingers-crossed:

BTW, it is running smoother with f2fs than ext4 on my device. I think that you should give it a go and try out as many kernels as possible to see which one gives your device a better performance and stability....;)
[Asus Transformer TF700] Artimis:
Total night and day difference in terms of performance/responsiveness. I enjoy using my tablet so much more after the conversion.

100% worth it.....
[Asus Transformer TF700] Brewshack:
Signature Mismatch

Damn, I think I killed my TF700. I did the F2FS conversion of the data folder as described but then I did a restore of a backup that was done in EXT4. After it was completed I rebooted and the Tf700 won't reboot.

I get:

Signature Mismatch

Booting Failed

Unrecoverable bootloader error (0x0000000).

I get this even when I try to enter into the bootloader by Power Button plus Volume Down Button.

Have I just bricked my device? :(

Thanks
[Asus Transformer TF700] Artimis:
Restoring a backup (even an ext4 backup) shouldn't have bricked anything (if it's indeed an issue with the bootloader). The only partition that should have been restored was /data. I can see this happening if you restored /boot as it may have restored an incompatible kernel/ram disk and prevent booting.....but you should still be able to enter recovery if that were to happen.

Are you sure you are holding the buttons down long enough? Also, did you update to a compatible bootloader (and reboot) prior to converting to F2FS and restoring?
[Asus Transformer TF700] berndblb:
Almost but not quite.

Follow this. To the letter...

http://xdaforums.com/transformer-tf700/help/guide-t2853546
[Asus Transformer TF700] lj50036:
He PM'd me, he not longer has access to the bootloader ....

Its a hardbrick ..... :(

Thx Josh
[Asus Transformer TF700] LetMeKnow:
How could one converted a data partition in f2fs and ended up with a bootloader corruption, hmmmm. It is hard to understand the logic.... :confused: Does the new twrp touches the bootloader partition somehow by any chance?
[Asus Transformer TF700] Brewshack:
I don't follow the logic either, but looks like I just screwed it up completely. I thought I had the latest bootloader on, 10.6.1.14.10, but on reviewing my original backup before unlocking, etc. the folder name has 10.6.1.14.4 in it, so I can only assume this was the actual bootloader version I was running. This probably has more to do with the issue than the actual F2FS conversion.

Let me just be a warning to everyone else. Follow the instructions to the letter and double check everything before you start!!!!

Thanks Josh and others for your help. I will source a new motherboard and start again :)
[Asus Transformer TF700] lj50036:
I can only go off what the user said, he tells me what happen, I have to take his word .....

No TWRP cannot touch the bootloader, so I also cannot follow the logic, It is only what I have to go on .....

The fact he had the bootloader for a few reboots after, whatever happen..

It points to emmc failure, Its rare, but it can happen.....

In conclusion, the user has no access to fastboot/adb and has no nvflash blobs...

So there is nothing that can be done ....

Thx Josh

That bootloader should have been ok to use...

It is recommended to update it to 14.10 but not required for what you were doing..

Sorry for the bad news, cannot save them all .....

Thx Josh
[Asus Transformer TF700] goast:
hi guys a total noob to f2fs and this tablet, about to install zombi-pop, in recovery i went to data and hit format data, then put in yes, afterwards it now says: formatting data using make _ ext4fs fuction, is that what it is supposed to say? also, i got this step from under the 3rd step optional but recommended... any advaice would be great...
[Asus Transformer TF700] berndblb:
Yep. Let it finish then convert to f2fs. Your data partition is getting a nice trim right now
[Asus Transformer TF700] goast:
Is there a more private way I can contact u, via hangouts or something? Please pm me if possible and thanks for the quick response

---------- Post added at 09:27 PM ---------- Previous post was at 09:19 PM ----------

ok so now it has finished and says: you may need to reboot recovery to be able to use /data again. updating partion details... done... and has buack and reboot system at the bottom... what do I do next? doesn't say specifically in op and I'm scared to mess it up

---------- Post added at 09:35 PM ---------- Previous post was at 09:27 PM ----------

nevermind i got it thank you [MENTION=4968172]berndblb[/MENTION]
[Asus Transformer TF700] XDMerciless:
RESOLVED - Issue formatting data partition from ext4 to f2fs.

I'm having the exact same issue below, but coming from stock ROM intending to flash to ZOMBI-POP:

http://xdaforums.com/showpost.php?p=62670505&postcount=3165

According to the same user above, they were able to resolve it manually. I already sent a PM, if and when the user above responds to the PM, I'll follow up, but I wanted to know if there were alternative methods to formatting the data partition from ext4 to f2fs without TWRP, or if any one could recommend another work around it would be greatly appreciated!

EDIT:

After some further research on other forums, discovered that the TWRP 2.8.7.0 TF700T data format partition functionality from ext4 to f2fs is a known bug. Although I wasn't able to find a non TWRP way of doing it, the work around was with Kang TWRP:

http://xdaforums.com/transformer-tf700/development/recovery-kang-twrp-tf700t-2-8-x-xarea51-t3049395

Using KANG TWRP 2.8.7.2, I was successful in formatting the data partition to f2fs, on a TF700T.
[Asus Transformer TF700] silverchairbg:
I am currently on CM11, do not care about anything on tablet right now, so can wipe/format anything. I fancy CM11, so I'd rather do not experiment with other ROMS, but responsiveness after 1 month of use is getting sluggish. So I want to try F2FS and see how that behaves. I've read most of the relevant threads and figured out I need a kernel that supports F2FS as CM11 M12 snapshot, does not. GrimLock kernel v.4 is for KitKat (CM11), so that would work. However, what are the exact steps? My assumption is:

1) format /data and change /data to F2FS

2) install CM11 rom

3)install gaps

4)install GrimLock kernel

5) first boot?

Please advise, the tablet is used mainly by my 4 year old and I don't want to leave her hanging without it, If I blindly go ahead and brick it.
[Asus Transformer TF700] berndblb:
Most likely those steps are fine. Assuming that both installer scripts write the kernel to /staging (from where the bootloader will write it to /boot on the next boot) the Grimlock kernel will just overwrite the CM kernel if flashed in the same recovery session. If you want to go the extra mile just add a simple reboot to bootloader between steps 3 and 4.
[Asus Transformer TF700] silverchairbg:
But wouldn't reboot between 3 and 4 cause the tablet to go into bootloop? After all the kernel that CM11 comes with is not F2FS enabled.
[Asus Transformer TF700] berndblb:
That's why you would reboot into the bootloader - not into system. But as I said: Most likely the sequence you posted is just fine. ;)

Try that first. And even if Android does not boot, just long press the power button, then hold Vol Down during boot, enter recovery through the bootloader menu, flash Grimlock's kernel and reboot. Nothing will break. The rom just won't boot because the file system on data is not recognized.
[Asus Transformer TF700] djmacpro:
Guys my 4gb sd got corrupted trying this rom cm12.1

I perfectly created partitions then converted them to f2fs as mentioned installed the rom n waited for 10min still nothing happened so removed battery and got into fastboot to flash boot img after that also same thing so i wanted to go back to stock rom so i tried deleting the partition from miNitool partition but those f2fs partition are not getting deleted it comes up again i also tried converting them to ext4 again from recovery bt the wont get converted and now sd is not detected in pc via card reader but minitool is able to detect.

Pls help to recover it
[Asus Transformer TF700] _that:
You should use more punctuation your sentences are hard to read if you removed the battery you apparently do not have a tf700 kthxbye
[Asus Transformer TF700] berndblb:
.... and a few more problems with your post:

I have no idea what device you have but I doubt that the rom supports anything other than /data on f2fs. If you converted anything else the rom probably won't boot.

You used minitool which has destroyed many SD cards. That card is probably toast, use Gparted next time.

Post in your device thread, this one is for using TWRP on the TF700 - nothing else.
[Asus Transformer TF700] djmacpro:
Sorry but I did all for my HTC pico I was installing cm12.1, anyway to delete those f2fs partition? So that I can get back my SD card which is now getting displayed on computer.
[Asus Transformer TF700] berndblb:
Again. Nobody here has any clue what your htc Pico needs.

And you are talking about an external microSD right? minitool probably destroyed it. That tool is known for it. Sorry
[Asus Transformer TF700] Dirt_Bag:
Just followed steps 1-4 including the optional "format data". I'm running TWRP version 2.8.7.0 on factory 4.2.1 and bootloader 10.6.1.14.10. When I try step 4, I get the following messages;

What do I do now!?
[Asus Transformer TF700] lj50036:
Give my kang version a go :p

Its linked in the OP..... :good:

Thx Josh
[Asus Transformer TF700] berndblb:
Yeah, that ^^^

Can't remember if 2.8.7.0 had a bug but better to run the latest version..
[Asus Transformer TF700] Dirt_Bag:
OK, I am on KANG 2.8.7.4 now. Do I need to do another nandroid backup from the updated TWRP, or will the one performed this morning from 2.8.7.0 be the same thing?
[Asus Transformer TF700] berndblb:
Naa, should be fine. Unless the older version borked the nandroid which is unlikely.

But if in doubt... shooting a nandroid takes no time at all... trash the old one, get a new one.
[Asus Transformer TF700] rattboi:
Hi,

I'm in the process of getting my TF700t going as well as it can, and in that process I've installed TWRP KANG 2.8.7.4. I'm not interested in backing anything up. I'm totally fine starting from scratch on everything.

Following your guide, it says that when I format /data, it may take up to 60 minutes. I did follow this correctly, I think. "Format data" -> "type yes". It formatted it, but it took about 30 seconds at the most. Did I do something wrong? Everything is currently very snappy in Zombi POP, but I'm concerned that it will slow down over the next few weeks (as I've experienced in the past with the TF700 and other roms).

Any thoughts on why my case is different from your guide?
[Asus Transformer TF700] berndblb:
I wouldn't worry about it. Maybe they dropped the secure erase in the last version? IDK, have not run the formatting yet. Would be a question for [MENTION=5123642]lj50036[/MENTION]
[Asus Transformer TF700] lj50036:
I have had a few reports of this over the years.....

This has something to do with the tablet itself....

I still included secure erase for sure......

Maybe if [MENTION=4477698]rattboi[/MENTION] is willing to pull some info off the tab, I could know more...

But either way if you are doing.... wipe / format data / type yes... It is doing a secure erase....

Thx Josh
[Asus Transformer TF700] rattboi:
lj50036,

Sure, what would you like to know?
[Asus Transformer TF700] Dirt_Bag:
I just did this on my TF700 and the format /data took at least 30 minutes and possibly 45. I wasn't timing it, and walked away for a while so I don't know for sure...
[Asus Transformer TF700] lj50036:
This will involve formatting /data .....

So let me know when and if you are going to do such things...

We can do this then....

Thx Josh
[Asus Transformer TF700] rattboi:
I'm down for the pursuit of knowledge. I've barely got anything installed on it at this point anyways. Would be easy to get back to where I am. Next steps?
[Asus Transformer TF700] lj50036:
boot into twrp

format data

reboot back into twrp

adb shell hexdump -C -n 104857600 /dev/block/mmcblk0p8 > hexdump.txt

this will output the hexdump.txt file to your PC in the currect dir

upload the file

Thx Josh
[Asus Transformer TF700] rattboi:
Oops,

I've already gone through with it...

gist.github.com/rattboi/5d97131e69a56708a190
[Asus Transformer TF700] lj50036:
No worries....

You can do the new one too if you'd like..... :good:

Thx Josh
[Asus Transformer TF700] rattboi:
It's the same thing, but truncated, right?
[Asus Transformer TF700] lj50036:
Correct.... :)

But it redirects the output to your PC rather then the tablet....

So no need to adb pull it off......

I am still learning myself.. :good:

Thx Josh
[Asus Transformer TF700] rattboi:
gist.github.com/rattboi/5d97131e69a56708a190

This is now updated with the 2nd version you requested
[Asus Transformer TF700] rattboi:
You need anything else? Inconclusive results?
[Asus Transformer TF700] lj50036:
Nope, sorry :D

Looks like to me that it is doing a 'secure erase' which is good :)

I cannot tell you why it happens so quickly, but that is part of the game....

Thx Josh
[Asus Transformer TF700] bobkoure:
Using F2FS modified TWRP; no option for F2FS?

I downloaded the TWRP specified at the very beginning of this thread (2.7.0.0 / red go-back arrows) and when I select 'Wipe' then "Advanced Wipe" there is no option to change file system type, even after I've selected a folder.

Any suggestions? Just run the format.zip file?

Thanks!
[Asus Transformer TF700] berndblb:
You did not download the recovery specified in the OP.

2.7.x is way too old and does not do file system conversion
[Asus Transformer TF700] Petfish:
I did this, and got a message saying encryption can't complete and the tablet needs to reset.

When I try to do so, it boots back into the twrp, tries to complete again, fails, and repeats.

I have a nandroid from before this happened but can't break out of the loop now.

Any suggestions?
[Asus Transformer TF700] berndblb:
Have you tried a full format of data? This takes an hour or more. Let it finish.

Then convert to f2fs.
[Asus Transformer TF700] lj50036:
That sounds like to me, that the ROM you installed does not support f2fs...

If android cannot mount /data it assumes its encrypted..

Thx Josh
[Asus Transformer TF700] zangaby:
Thank you !
[Asus Transformer TF700] BigBxcks:
does this work with any and all android? I have the LG K7 metroPCS version with bootloader unlock and Twrp v3.0.2.0
[Asus Transformer TF700] _that:
Your kernel for both recovery and system must support f2fs, and you must convert the correct partition. If you blindly follow the guide for a different device, you might hard brick your device.
[Asus Transformer TF700] BigBxcks:
Alright :) how would I figure out if my kernel and recovery supports this Filesystem? Is there something specific I must do ? Or is it device dependent?
[Asus Transformer TF700] _that:
cat /proc/partitions

(via adb shell or in a terminal app) lists all supported filesystems.
[Asus Transformer TF700] BigBxcks:
This is what shows up from the code I put in
[Asus Transformer TF700] skapika:
good thing; like that the system is more faster
[XDA Assist] Monstercat007:
I have seen and confirmed that my device Samsung Galaxy Tab S 8.4 is rooted! Now my friends talk about the Flashing ROM thingi... How can i do it? Do i need to open my computer for it? Does it take much time? Or whatever else.... And does it even get flashed or stuff? Please Please Please tell me how can i do it!

I HAVE ROOTED MY DEVICE THROUGH THE ODIN MODE!!! SO TELL ME THE SUITABLE METHOD!
[XDA Assist] jd1639:
Thank you for using XDA Assist. There is always the possibility of bricking your device when flashing roms. So I would suggest that you don't just rush in but first read more about your device and learn about it. In the link below look in the general and q&a forums and look for the threads at the top which are stickied, they're the ones with the stick pins. Good luck!

http://xdaforums.com/galaxy-tab-s
[Windows Phone 8 Q&A, Help & Troubleshooting] Hritwik:
Anyone knows how to change IMEI number Of Windows Phone????:)
[Windows Phone 8 Q&A, Help & Troubleshooting] teenurmi:
I think you cant change it. It is like ID for your phone.
[Windows Phone 8 Q&A, Help & Troubleshooting] ngame:
why looking for something like that ?

If you are a lumia user I think It's not possible for you at this time . but maybe ativ s users can do such thing .
[Windows Phone 8 Q&A, Help & Troubleshooting] Hritwik:
Hmm... If Samsung phones can do it then can you please provide me the guide,...i want to test it...
[Windows Phone 8 Q&A, Help & Troubleshooting] ngame:
but maybe ativ s users can do such thing

Doesn't mean that they can

Got it? I don't know where imei stored but i guess may be possible
[Windows Phone 8 Q&A, Help & Troubleshooting] Hritwik:
[MENTION=2159229]sensboston[/MENTION] and [MENTION=4542506]ngame[/MENTION] ....now wp has interop capabilities..... now do you know the keys to change IMEI or device id....

sensboston told path for wp7 to change device id...but wp 8....na....
[Galaxy S 4 Q&A, Help & Troubleshooting] bsnpr24:
My Galaxy S4 turned off randomly. I attempted turning it back on via the power button and it would not respond. Then I tried taking out the battery and replacing it, the device vibrates with the Galaxy S4 logo showing up for about a couple seconds, then the screen goes blank again. I even tried placing a battery from a different S4 - still doesn't work. I tried opening the devise verifying the power button and it seems to be fine (but not sure). I tried hitting the power button on a flat surface a couple of times which in fact fixed the problem but then the issue proceeded to re-occur again.

I am stuck and need help ASAP. The phone has not warranty and I have 8 months of contract to go. Please assist. I would really appreciate it.

Phone model: SGH-I337M

Anybody know what's wrong with my device?
[Galaxy S 4 Q&A, Help & Troubleshooting] Strephon Alkhalikoi:
The power button has begun to fail. Whacking it on a flat surface temporarily fixed the issue, but the only permanent fixes are to either replace the button, which is exceedingly difficult without precision tools, or to replace the motherboard.

Even though your S4 is no longer under warranty, I still would bring it to a service center to have it looked at. They can determine exactly what the problem is and also tell you how much it will cost.