Database Users

Please, help a n00b. I think I broke my Nexus S 4G

Let me first start off by saying that I am on a Mac.
I used these directions to get my phone unlocked and get ClockworkMod Recovery or whatever running on my Nexus S 4G.
I then loaded Cynogen onto my SD card, booted into Clockwork, wiped my phone, then tried to install Cynogen. It failed- it couldn't install boot.img or something.
Now, when I try to boot up my phone, it just shows the Google logo with the unlocked icon below it. It never successfully boots. I can still get into Clockwork Recovery, but below every menu section over the logo, it always shows some error like
Code:
E: failed to something something /cache
Can you guys please, PLEASE instruct me on how to get my phone working normally? I don't need it unlocked, just running the stock OS.
Anyone who can successfully help me do this on a Mac will receive a nice PayPal donation if they wish.
Thank you so much in advance.
And yeah, I know I shouldn't have been attempting this because I am such a n00b.

westinl said:
Let me first start off by saying that I am on a Mac.
I used these directions to get my phone unlocked and get ClockworkMod Recovery or whatever running on my Nexus S 4G.
I then loaded Cynogen onto my SD card, booted into Clockwork, wiped my phone, then tried to install Cynogen. It failed- it couldn't install boot.img or something.
Now, when I try to boot up my phone, it just shows the Google logo with the unlocked icon below it. It never successfully boots. I can still get into Clockwork Recovery, but below every menu section over the logo, it always shows some error like
Code:
E: failed to something something /cache
Can you guys please, PLEASE instruct me on how to get my phone working normally? I don't need it unlocked, just running the stock OS.
Anyone who can successfully help me do this on a Mac will receive a nice PayPal donation if they wish.
Thank you so much in advance.
And yeah, I know I shouldn't have been attempting this because I am such a n00b.
Click to expand...
Click to collapse
What version of CWM did you flash?

Pm me and we will use a chat service (aim, yahoo messenger) and I will walk u through it.

My suggestion of what I would do is this. Find a windows computer somehow. Go to the development section and look for the sticky about rooting the ns4g. Look for the link to flash the d720 back to stock. Download all those files to a flash drive. Take the drive to the windows computer and set things up then flash the phone back to out of the box stock.
Then you can go back to the Mac and do the root and 3024 cwm recovery and rename the sh file that puts stock recovery back in at boot time. After all this you can do what you want but I would suggest staying with the stock experience. This might be extreme to fix this but in my opinion, I wouldn't waste time trying to fix it, especially since you are new to this. It's like computers, yeah you could try to fix it but you could be opening a can of worms. It might take less wasted time putting it back to complete stock instead of f-ing around trying to figure out what happened and how to fix it. You could take hours trying to fix an install of windows that keeps falling on it's face, or you could format and install windows fresh and new in maybe thirty minutes. Which is easier?

CM7 will not work at the moment because it still uses 2.3.3, go find instructions for a 2.3.4 Nandroid. if you want though,i heard that supeaosp works on a ns4g.
Sent from my Nexus S using XDA App

westinl said:
Let me first start off by saying that I am on a Mac.
I used these directions to get my phone unlocked and get ClockworkMod Recovery or whatever running on my Nexus S 4G.
I then loaded Cynogen onto my SD card, booted into Clockwork, wiped my phone, then tried to install Cynogen. It failed- it couldn't install boot.img or something.
Now, when I try to boot up my phone, it just shows the Google logo with the unlocked icon below it. It never successfully boots. I can still get into Clockwork Recovery, but below every menu section over the logo, it always shows some error like
Code:
E: failed to something something /cache
Can you guys please, PLEASE instruct me on how to get my phone working normally? I don't need it unlocked, just running the stock OS.
Anyone who can successfully help me do this on a Mac will receive a nice PayPal donation if they wish.
Thank you so much in advance.
And yeah, I know I shouldn't have been attempting this because I am such a n00b.
Click to expand...
Click to collapse
Dude, you can't flash regular Nexus S ROMs on the Nexus S 4G.
Reflash the latest clockwork recovery.
Use fastboot flash recovery recovery.img
then...
Go to recovery, mount the USB storage, and put this zip on the usb storage:ROM
Go to recovery and flash that zip

here's the recovery that works. cwm and stock. How many times is this going to happen with new people and this phone in this forum section before a new subsection is made? We are going to be putting out a lot of these unnecessary fires with people making first time mistakes until something is done so as to not confuse them. Some don't realize that there are different versions of the same phone that aren't necessarily compatible with each other.
The way things are set up now, it isn't making this problem go away. I think that a different method should be tried if the current one isn't working too well. I'm flogging a dead horse now......

I'm looking to root my new NS4G as well -- and do it right the first time. On a Mac as well.
If the similarly-suited OP had issues I'm a bit more skeptical about my effort.
A separate forum might be necessary so people with the D720 hardware don't have near-brick experiences.
Sent from my PC36100 using XDA Premium App

soooo....did the op ever get it running again? i wonder if anyone ever took up on his paypal offer

[Q] Xoom files doesnt change

Hello guys,
i got a serious and frustrating problem here.
A few days ago my xoom was stuck on the M screen, so I used a thread in the forum and recovered it.
It solved myh problem back then, but since I had 3.2 before this and the solution injected me with Android 3.01 my problems started to show themselves.
the first one is that
<b> Through Fastboot, RecoveryMod, ADB </b> and any other way you can Imagine to install a new ROM or even remove or create a file,
All of them show success message but when I check them out I see no changes.
i tried fastboot and Recovery to install nearly every ROM,Recovery and bootimage in this site but so far it was wild goose chase.
so I want to ask if I'm doing anything wrong or if you need any more information here, but please help me with this

wow I cant believe it, All these masterminds here and no answer to my distress signal??
Guys I am so in trouble and this is the only place I hoped to get answered.
I can provide you with more info if you need, but please dont say I'm on my own here.
all these years this forum was the last hope for me.
i know I'll get my answer here one day

You are not being very clear about what you have done,, but I'm assuming that you reinstalled the stock image that got you back to HC 3.01. Can you see if you are able to get OTA updates to get you back to at least 3.1, or 3.2 if possible?

If that's my problem forgive me please, Ive written that post in 3:00AM
for the sake of clearity I should add some info:
1. I even tried stock ROMs but you see I cant even flash them (Not from Recovery nor Fastboot) the steps seem successful : it opens the package,it installs them and it says everything was a success. But when I restart the device I see nothing has changed.
2. OTA updates are the same, they keep downloading and when the sysem reboots to recovery to install them it cant find them.
3. You dont believe it if I say even files and programs that I remove from device by my hand(Android OS) are back after the first restart.
And you see it's dark magic! everything from a file to a partition are back by one reboot. I dont know what should I call it but I havent seen anything like it on the whole Internet.
So seems like I should make a competition for the xda experts here
Can you publish it so all of them can see it?

Mohfath said:
If that's my problem forgive me please, Ive written that post in 3:00AM
for the sake of clearity I should add some info:
1. I even tried stock ROMs but you see I cant even flash them (Not from Recovery nor Fastboot) the steps seem successful : it opens the package,it installs them and it says everything was a success. But when I restart the device I see nothing has changed.
2. OTA updates are the same, they keep downloading and when the sysem reboots to recovery to install them it cant find them.
3. You dont believe it if I say even files and programs that I remove from device by my hand(Android OS) are back after the first restart.
And you see it's dark magic! everything from a file to a partition are back by one reboot. I dont know what should I call it but I havent seen anything like it on the whole Internet.
So seems like I should make a competition for the xda experts here
Can you publish it so all of them can see it?
Click to expand...
Click to collapse
Actually, I have seen someone with the same problem here on this forum, but I can't recall exactly what the solution was.
Can you describe, step by step what you are doing, what cable you are connecting to your pc with, etc?

okantomi said:
Actually, I have seen someone with the same problem here on this forum, but I can't recall exactly what the solution was.
Can you describe, step by step what you are doing, what cable you are connecting to your pc with, etc?
Click to expand...
Click to collapse
That would be relief to know this could be solvable.
I will look more too.
As for your post I must say:
1. I plug the Xoom to the PC using the included cable
2. I start the xoom and start fastboot
3. on the PC system has the drivers and completely knows it
4. I start with SDK:
I. Fastboot oem unlock (Completing onscreen instructions and reboot device)
II. Fastboot mode again I use Fastboot flash boot boot.img
III. Continuing with Recovery,System
IV. Rebooting the device anything is the same.
My ROM is unchanged by the process and keeeeeeeeps giving the damn error of System process error please submit
5. And with ClockworkrecoveryMod I have the stock ROM on my sd card.
I. I choose install zip from sd card.
II.Choose the correct zip file and start flashing.
III. Choosing Wipe Data/Factory reset will take the device into a complete hang. unless I first use the mount page to mount the System/Data
IV. I reboot the device and ..... you know nothing changed.
so thats my story.
Still hope to find something about it.

Thanks...that was helpful. But now I want to know the following:
Were you rooted before the trouble started?
What did you do to recover?
If rooted, what version of CWM recovery did you have installed? Did you do a nanadroid backup? (I guess the answer is no, because you could have just restored with that).
What recovery are you accessing when trying to flash a zip file?
If you can answer these questions I will continue to wrack my brain trying to recall where I saw that thread.
Edit: please check out this thread http://forum.xda-developers.com/showthread.php?t=1370312
Some of what I said to him may help you .

okantomi said:
Were you rooted before the trouble started?
What did you do to recover?
If rooted, what version of CWM recovery did you have installed? Did you do a nanadroid backup? (I guess the answer is no, because you could have just restored with that).
What recovery are you accessing when trying to flash a zip file?
If you can answer these questions I will continue to wrack my brain trying to recall where I saw that thread.
Edit: please check out this thread http://forum.xda-developers.com/showthread.php?t=1370312
Some of what I said to him may help you .
Click to expand...
Click to collapse
Being rooted? -> Yes, The world is more beautiful with root!
to recover -> I followed this: http://forum.xda-developers.com/showthread.php?t=1097997 Shame it was Android 3.0
I use ClockworkRecovery 3.0.0.28 and I cant upgrade it cause of ... you know
And for your help I must say you are definitely the most caring person I know...
I'm off to check the provided link now

I was thinking of something that might be a reason.
I have this tiny problem:
When I go to CWM and choose Erase userData/Factory Reset Device Hangs
Click to expand...
Click to collapse
I was thinking of may be the userdata partition is corrupted and I gotta find a way to flash it completely.
Somehow I used Fastboot utility to do this and after saying Success, Nothing changed again.
Do you know any other way to physically do this job?

Bricked on Justin's T-Mobile rom? Phone thinks its a D801? Here's how you fix it.

I figured with the amount of bricked LS980s with Justins rom I've been seeing at my shop I might as well make some sort of tutorial to help some people out. Searching doesn't bring up too many threads but there are a couple and hopefully a few of the guys in those chime in. My goal is to make this visible and save many of you hours of trouble. Many thanks to Justinswidebody for building the rom. I won't post the link as most can use the search to find it just fine.
Why does the LS980 brick with Justins rom?
It updates.
I think the majority of people flash the rom and forget to take the necessary steps to prevent an update and when it does it will try to reboot into recovery and wipe the system resulting in a soft brick. Most of the time TWRP will remain, which is good, but reflashing the rom will do no good.
Right after this happens what do I do?
Imeadiately plug in you usb and adb push the stock ZVA rom onto the sdcard
use this command:
adb push nameoffile.zip /sdcard
It will take a while.
Once it finishes you need to wipe everything but internal and flash. Once done, power off and boot into download mode.
Prepare LG Flasher and correct TOT file with DLL. I may post a link later.
In my personal experience with installing justins rom it's best to start fresh with ZV7, trust me you will have less headaches. Once it finishes you're ready to redo the whole thing.
I dicked around with the phone and now I can't get into recovery?!
You have to have recovery on there.
If you can't get into download mode then your journey ends here, not sure there is a fix for that, however, you probably already have it in DL mode and getting a fail "wrong DLL" or some ****. Your phone now thinks it's a T-mobile D801. Forget the sprint files, you're gonna flash the tmobile files just to get it to boot. I actually had a customer bring me the phone and managed to flash the right combo to get it to boot but he didn't know what he did, I'll have to find them.
Now, once booted up you'll notice wifi and data will not work along with keyboard and other things thus making it impossible to download flashify and reflash recovery. The phone, in some cases, will only stay booted for 20 seconds and then reboot over and over. It's like this phone is actively tying to make your life difficult. Relax, and let the adb drivers install. Test it by opening a command prompt and write: cd/
/adb
/adb devices
Allow the rsa key. You won't have time to transfer the stock sprint ota file so we need to transfer it in recovery.
Download the simpletool flasher by OptimusRS, this will flash recovery to your phone and remember to choose d801 not ls980. Reboot into recovery. Once the adb drivers have installed you're going to adb push the stock zip back onto the sdcard like you did before. Wipe everything and flash, then power off. Once you boot into download mode it should recognize the phone as an LS980 once again and you are free to flash the correct tot and dll files.
Congrats! You did it!
How do I prevent this from happening in the future?
I've been fighting with this for a while and I think finally know how to be 100% successful in turning off the OTA, if anyone has something to add please do
Go into the app manager and find google services framework and uncheck or disable or both
Use a file manager to go up to CACHE and delete the update that will most likely be hiding in there
Go up to system/app and rename any service that looks like it would provide an update- LDdownload provider is one. I wish I had a list of all of them but I really don't know what the exact app is.
Special thanks to all the guys contributing in these threads:
http://forum.xda-developers.com/showthread.php?t=2641831
http://forum.xda-developers.com/showthread.php?t=2682926

Exactly at this point
I am exactly at this point, but not turned on usb debugging, so i don't have adb access to the phone. When I try to flash the phone with ls980 TOT it says, the device is D801 and if I try D801 KDZ file, it shows an error message "previousLoad()". I have both download mode and Recovery mode. I have tried sideloading rom on recovery, but I get an error like "E: footer invalid, E: signature invalid"
What can I do to unbrick it. I am trying desperately for the past few weeks.

Anoop S S said:
I am exactly at this point, but not turned on usb debugging, so i don't have adb access to the phone. When I try to flash the phone with ls980 TOT it says, the device is D801 and if I try D801 KDZ file, it shows an error message "previousLoad()". I have both download mode and Recovery mode. I have tried sideloading rom on recovery, but I get an error like "E: footer invalid, E: signature invalid"
What can I do to unbrick it. I am trying desperately for the past few weeks.
Click to expand...
Click to collapse
Honestly, this kind of brick is a *****. I had a customer bring in one that he actually used Flashtool to put on the original t-mobile dll and tot file, and adb does not work in order to get recovery on. Sucks.
Not many people have experience with this stuff and flashtool is a pain when this happens

2strokenut said:
Honestly, this kind of brick is a *****. I had a customer bring in one that he actually used Flashtool to put on the original t-mobile dll and tot file, and adb does not work in order to get recovery on. Sucks.
Not many people have experience with this stuff and flashtool is a pain when this happens
Click to expand...
Click to collapse
Lol I'm having this issue with one of my customers and it fails. I unlock these things and pass them on but I ALWAYS disable the Google Play Services firmware update in order to avoid this and clearly warn them NOT to factory reset.
This one guy got his elsewhere and the guy gave him no warning on the update. So he contacted me and his is worse than my first experience with the T-Mobile rom OTA brick. Seems like his seller didn't use AutoRec which is more reliable. Basically, mine still had TWRP, this one does not. Mine would boot into the LG logo with those wonderful white words on the top left. His is completely discharged, NO TWRP or anything. Boots the LG logo breifly and basically kicks it directly into Firmware Update mode.
So basically I have to restore the D802? I used the T-Mobile 4.4.2 kitkat based rom on mine, not sure what this had, but I know it was a T-Mobile rom as the customer described. Question is, how do I install a custom recovery then? I know that mine would get detected as a T-Mobile, but since I had the luck of having TWRP, I simply wiped everything, and it would then flash via flashtool as a normal LS980.
Any ideas on how I get TWRP on it? Should I experiment using the AutoRec for the T-Mobile variant?

I really F-d it up

To start, I'm using the Verizon VS980.
While trying to get a custom recovery working on the latest OTA version, VS98026A, everything I tried seemed to fail. I used twrp manager to install the latest twrp into my recovery, but at the step where it reboots into recovery I got sent to fastboot instead. No problem, just try again right? Same problem. I did a little digging and it seems the 26A update locked down the bootloader tight, can't even get loki working, but flashing the 12B aboot was supposed to be a workaround. So I flash the 12B aboot through fastboot. Oops. I must have missed a step SOMEWHERE, even though I'm fairly experienced and careful, because now it won't boot.
At this point I'm thinking I'll just bite the bullet and restore it. Nope. Recovery mode is dead now, as is fastboot. I try to connect download mode, and it appears to work (download mode shows on the phone) but the computer doesn't recognize the phone even exists.
I'm a week away from my next paycheck to find a phone to pull the guts out of, and I have a full TWRP backup of all partitions, including EFS. What are my options, if any? Help... please?
(I also read - too late - that freegee is supposed to automatically downgrade bootloader)

No one has any ideas on fixing it?
I'll settle for ideas that will make it impossible to tell if it's rooted, like make it so it won't turn on or at least remove that ugly warranty-breaking "rooted" flag on the recovery warning. I'll just take it in for warranty claim after.

Anyone have any ideas? Maybe wiring the USB to short it out?
I seriously just need to break it, and soon because my employer can't contact me.
As a revelation that may fix/break the phone, I got the computer to recognize the phone. It came up as a bunch of unformatted drives, and one that was readable that contained an "image" folder.

since your computer can detect it now, why dont u try flash kdz using LGFlashtool ?

zekurosu said:
since your computer can detect it now, why dont u try flash kdz using LGFlashtool ?
Click to expand...
Click to collapse
Thanks for the suggestion, but it wouldn't work. It was detecting it as qhusb_bulk, not download mode.
I followed the steps here, http://forum.xda-developers.com/showthread.php?t=2582142, and partway through dd'ing the aboot my phone shut off. I guess the battery died. Now it won't turn on again AT ALL. Just what I wanted, kind of. At least now I can replace it under warranty.

LG V20 H910 Root attempt fail, any plan of recourse?

Hi. I'm just gonna say this first: I didn't know entirely what I was doing when beginning this operation. I was just trying to do something fun and new, and it didn't pan out. I fully acknowledge that I am an idiot.
Now, the story. I was attempting to root my LGV20 with this guide: https://forum.xda-developers.com/v20/how-to/root-h910-v10m-t3664500 .
I have read over this thread more times than countable and thought I was doing everything correctly. I got to the "STEP3.BAT" portion of the guide and long story short, my phone crashed during it and somehow got foobarred.
It *kinda* works (as in it will boot for around a minute) and then blue/black screen into a reboot.
Is there any way I can save this phone? Hard resets, going into software, more dumb computer stuff, anything. I don't *need* to get this phone working again but it would be really preferable.
Simultaneously I fully accept the responsibility in failing the operations. I know that somewhere I must have messed up. If no-one wants/ can help me, tell me so. Just means new phone time.
If any more detail on what happened is needed, tell me.

First off: that guide is ONLY for the H910 (AT&T) variant, so make sure with your model
and also, when you said a "blue or black screen" it also has very small writings too, right? If so, then you may have faced a kernel/bootloader panic
Technically your phone is *still* alive, and your best method is to start over again, assuming if you read the whole guide carefully then you have backed up your firmware and can still access download mode.
Flash your stock firmware back (or use the H915 firmware provided by the guide), wipe and setup your phone again, then root the phone again.
I also suggest replacing the TWRP recovery inside the provided Dirtysanta folder cuz that's what i did when i faced the kernel panic

MEMO#22 said:
First off: that guide is ONLY for the H910 (AT&T) variant, so make sure with your model
and also, when you said a "blue or black screen" it also has very small writings too, right? If so, then you may have faced a kernel/bootloader panic
Technically your phone is *still* alive, and your best method is to start over again, assuming if you read the whole guide carefully then you have backed up your firmware and can still access download mode.
Flash your stock firmware back (or use the H915 firmware provided by the guide), wipe and setup your phone again, then root the phone again.
I also suggest replacing the TWRP recovery inside the provided Dirtysanta folder cuz that's what i did when i faced the kernel panic
Click to expand...
Click to collapse
Thanks so much. Freaked out over this for a good bit. Came back, did what you said and we're back at that step fully working. Life saver.
Now my first guess as to why step3 failed is that i didn't have the latest version of TWRP. How can I set that up?

Inside the root package folder you can see an .img file named twrp 3.0.2-1- us996.img
What i did was downloaded a later version
(not latest cuz my phone won't boot at the latest version for some reason), copied the name of the original twrp and renamed it, paste it to the folder, overwrite the old one, and try to root it again

MEMO#22 said:
Inside the root package folder you can see an .img file named twrp 3.0.2-1- us996.img
What i did was downloaded a later version
(not latest cuz my phone won't boot at the latest version for some reason), copied the name of the original twrp and renamed it, paste it to the folder, overwrite the old one, and try to root it again
Click to expand...
Click to collapse
Alright, i've done that now too. Thanks. Is there anything else i should/need to keep in mind to ensure failure is not going to happen? I want to make 100% sure I get everything right this time.

reptarien said:
Alright, i've done that now too. Thanks. Is there anything else i should/need to keep in mind to ensure failure is not going to happen? I want to make 100% sure I get everything right this time.
Click to expand...
Click to collapse
No i don't think there is more things to do, the guide you're following is pretty much straightforward already.
100% guarantee is always a stretch here in XDA. But if you're still facing problems you can ask for help on that guide's thread.

MEMO#22 said:
No i don't think there is more things to do, the guide you're following is pretty much straightforward already.
100% guarantee is always a stretch here in XDA. But if you're still facing problems you can ask for help on that guide's thread.
Click to expand...
Click to collapse
I really want to give up on this. This time I successfully made it through all Step 3, but I also noticed that my screen was kind of glitched and not rendering properly at that stage. After it rebooted, I unplugged my micro usb cable and it gave me an angry green warning message I will attach here.
If you/someone can tell me what to do with this message from here or instruct me on how to flash stock H910 10 q back onto the phone without doing TWRP (since i'm evidently incapable of installing it) I would be most appreciative.

Slightly better picture without anything cut off.

reptarien said:
I really want to give up on this. This time I successfully made it through all Step 3, but I also noticed that my screen was kind of glitched and not rendering properly at that stage. After it rebooted, I unplugged my micro usb cable and it gave me an angry green warning message I will attach here.
If you/someone can tell me what to do with this message from here or instruct me on how to flash stock H910 10 q back onto the phone without doing TWRP (since i'm evidently incapable of installing it) I would be most appreciative.
Click to expand...
Click to collapse
The screen glitching is normal, the green text after boot however is somehow not.
Sad to hear that it still didn't work, there something seems to be interrupting the process of rooting your phone. I dunno if it has something to do with ARB (anti rollback) preventing you to root
If you want to go back to your stock firmware that you backed up, you can:
-Carefully flash each file of your backed up firmware through adb and fastboot mode
-build a zip file of your firmware and flash through TWRP (since it didn't succeed tho)

MEMO#22 said:
The screen glitching is normal, the green text after boot however is somehow not.
Sad to hear that it still didn't work, there something seems to be interrupting the process of rooting your phone. I dunno if it has something to do with ARB (anti rollback) preventing you to root
If you want to go back to your stock firmware that you backed up, you can:
-Carefully flash each file of your backed up firmware through adb and fastboot mode
-build a zip file of your firmware and flash through TWRP (since it didn't succeed tho)
Click to expand...
Click to collapse
Could you reply with any links with a tutorial on how to do the first thing? Or describe it. Sorry for being so dumb i'm a total newbie lol

reptarien said:
Could you reply with any links with a tutorial on how to do the first thing? Or describe it. Sorry for being so dumb i'm a total newbie lol
Click to expand...
Click to collapse
Unfortunately i can't find any guides when it comes to flashing the back up.
I did read something back then on turning it into a zip file, but even if you can build one you still need TWRP, in which case you haven't successfully installed, so that's no option
Flashing the backup files requires specific commands, especially to the part on what partition should it be flashed to
When LGUP backs up your phone's firmware, you can see a vast number of files(i can't remember how were they named, I'll look up a reddit post about it)
The files where named based on what partition it came fom (H910_modemxx_COM12, H910_system_COM12 or something like that)
These are image files, what i did as far as i can remember was rename these files by adding an IMG extension for ADB to recognize
Flash them according to it's partition name:
"Fastboot flash system H910_system_COM12.img"
"Fastboot flash recovery H910_recovery_COM12.img'
Etc.
To go to fastboot, turn off your phone and hold the volume down button , then plug your phone to the PC.
But i really cannot guarantee this, because for all i know, in order to flash this you need fastboot, and to get fastboot you need to root your phone, because only the engineering bootloader has it (i'm sorry if it's wrong tho), and flashing these files to fastboot might be a bit dangerous because it will not verify the files, there may be chances that you might flash a corrupted file. so flashing via LGUP is the safest option so far if you don't know what you're doing