Database Info

[Q] Is there any recovery that can do this?

Hello fellow XDA members,
I am wondering if there was a custom recovery for the D820 that would allow me to put a password on the recovery to restrict access to it without entering it.
You see, I live in the Chicagoland area and it isn't the best neighborhood in the United States right now(cell phone theft being common). I'd like to go a step further when securing my phone, by restricting any possible thieves from factory resetting the phone to get through my screen lock.
Very similarly to when you add a supervisor password to your computer BIOS.
I appreciate all the feedback.

The problem you have is if you're thinking that much into it. Someone can easily just boot into the bootloader and fastboot erase the data partition

1. If you have something that important, don't keep it on your phone
2. Basic fastboot knowledge is needed to bypass a recovery password by simply flashing a different recovery
3. Locking your bootloader after flashing a custom recovery and/or gaining root access could possibly be a bad idea if something goes wrong, forcing you to wipe
4. I don't think TWRP will ever have password protection, the closest thing you can get is Android's encryption, which sometimes doesn't decrypt properly in recovery, and encryption always causes issues later. Philz Touch is no longer officially in development and won't support Lollipop, CWM will always be CWM.

Philz recovery can password protect recovery. If you then lock your bootloader, no one can bypass the recovery password, so long as you also have an android password. Sure they can erase the data by unlocking fastboot, but the point is not to prevent people wiping your data. the point is to prevent people getting your data.... which you will have to maintain a backup routine for,
I did this for a while whilst I was the official philz maintainer for N5.
Problem is though, the project has pretty much ended so you wont be able to use it forever.

Need help with screen lock or removing data from screen locked i535

I'm sure it's been beaten like a dead horse... Yes I have searched all over XDA and other resources. It seems every time I think I find something... I'm one setting short or one model away from what would work.
Been working on this way too long and now I ask for your help.
I have a client who lost her daughter. (She drown). She has her phone (S3 I535 verizon) but no idea what the lock pin would be and has tried a couple but none work. Unfortunately she's on attempt 8/10 so two more tries and the phone factory resets and all is lost.
She really wants to recover her daughter's pictures and if possible remove the screen lock without losing data (either works for her if it can be done).
I've tried everything I can find.
While she has her gmail and password, when we logged in device manager listed no active devices. (was able to recover some pictures from a backup, but it appears gmail didn't back up more than a couple from a couple years ago.)
Logged into samsung to remote unlock it, but again, no devices on account.
ADB is a no-go because USB debugging is OFF
Tried to put TWRP on it but odin failed
(Found a thread here that seems to be quality but can't load the program in stock recovery and cant get CWM or TWRP on it without debugging.)
Any ideas?
I do not know the android version, but I suspect it is the newest. I used my old S3 to replicate it so I could try these things without damaging her phone and losing the data, and it's running 4.4.2

If you couldn't flash a recovery using Odin then you're probably right about it being on one of the newer versions(your phone), the boot loader got locked up tight and the only recovery we have available is Safestrap. This is a tough one. I'm no expert by far, take what I'm saying with a grain of salt and do your own researching before taking any action after reading this! I see two ways of recovering some or all data if the bootloader is locked(and the device storage isn't encrypted)
1. If you don't have equipment to directly read/write to the internal storage then point her somewhere that specializes in data recovery on smart phones.
2. Factory reset the device, try to recover "deleted" data.
If the bootloader wasn't/isn't locked down then you could probably flash a rom that didn't have the lock screen pin/pattern ect implemented. I don't have the i535 but I know that the prepaid version checks the system partition when flashing via Odin so this probably wouldn't work if it's locked but I can't confirm wether or not this is checked on the i535
Can you enter the stock recovery on the daughters phone just to verify if its updated or not. Should be a string near the top. If it ends with ne1 its on 4.4.2 and I don't recall the one for 4.3. If you're unable to enter the recovery because you have to enter the pin before there's an actual lock screen(with the clock, status bar, wallpaper ect) then it's likely encrypted and there's nothing that you can do about that.

OpenSourcererSweg said:
If you couldn't flash a recovery using Odin then you're probably right about it being on one of the newer versions(your phone), the boot loader got locked up tight and the only recovery we have available is Safestrap. This is a tough one. I'm no expert by far, take what I'm saying with a grain of salt and do your own researching before taking any action after reading this! I see two ways of recovering some or all data if the bootloader is locked(and the device storage isn't encrypted)
1. If you don't have equipment to directly read/write to the internal storage then point her somewhere that specializes in data recovery on smart phones.
2. Factory reset the device, try to recover "deleted" data.
If the bootloader wasn't/isn't locked down then you could probably flash a rom that didn't have the lock screen pin/pattern ect implemented. I don't have the i535 but I know that the prepaid version checks the system partition when flashing via Odin so this probably wouldn't work if it's locked but I can't confirm wether or not this is checked on the i535
Can you enter the stock recovery on the daughters phone just to verify if its updated or not. Should be a string near the top. If it ends with ne1 its on 4.4.2 and I don't recall the one for 4.3. If you're unable to enter the recovery because you have to enter the pin before there's an actual lock screen(with the clock, status bar, wallpaper ect) then it's likely encrypted and there's nothing that you can do about that.
Click to expand...
Click to collapse
I can enter recovery mode and I do believe it is 4.4.2.
because of the delicate nature of her phone (being her passed on daughter's and she used 9 of 10 attempts to guess her pin) I pulled my S3 out of the drawer (coincidentally I stopped using it about 2 weeks after she passed) and everything is identical down to the recovery string at the top. I know it's running the same software and I have all kinds of old pictures and texts on it like she would have and I am logged into gmail on it like she is. I locked the screen on MINE and I know the PIN on MINE. I also saved a backup of my stuff so I'm using my phone as the tester since I was able to put in in the identical situation
I have room to play because of that. Once I have success on mine, I'll try what worked on mine on hers.
So far I've tried...
play.google unlock... While I have now been able to get her device to appear on device manager on google's site, they changed it so that when I remote lock it the screen lock pin does NOT change.
I called Google, Samsung, and VERIZON. None have the ability to change or remove lock screen pin.
I tried ADB, but it doesn't detect any devices when I ADB shell or ADB device.
USB DEBUGGING IS OFF (or we wouldn't be having this convo)
It has stock recovery and not CWM or TWRP (again if I could get one of those on there, we wouldn't be having this convo) (tried ODIN flashing TWRP on, but fails)
---------------------------
Every direction I head I hit a brick wall.
I've never heard of being able to recover data from internal SDcard after reset. Didn't think that was possible.

FYI. recovery mode string is...
ANDROID system recovery <3e>
KOT49H.I535VRUDNE1

Wking46 said:
I can enter recovery mode and I do believe it is 4.4.2.
because of the delicate nature of her phone (being her passed on daughter's and she used 9 of 10 attempts to guess her pin) I pulled my S3 out of the drawer (coincidentally I stopped using it about 2 weeks after she passed) and everything is identical down to the recovery string at the top. I know it's running the same software and I have all kinds of old pictures and texts on it like she would have and I am logged into gmail on it like she is. I locked the screen on MINE and I know the PIN on MINE. I also saved a backup of my stuff so I'm using my phone as the tester since I was able to put in in the identical situation
I have room to play because of that. Once I have success on mine, I'll try what worked on mine on hers.
So far I've tried...
play.google unlock... While I have now been able to get her device to appear on device manager on google's site, they changed it so that when I remote lock it the screen lock pin does NOT change.
I called Google, Samsung, and VERIZON. None have the ability to change or remove lock screen pin.
I tried ADB, but it doesn't detect any devices when I ADB shell or ADB device.
USB DEBUGGING IS OFF (or we wouldn't be having this convo)
It has stock recovery and not CWM or TWRP (again if I could get one of those on there, we wouldn't be having this convo) (tried ODIN flashing TWRP on, but fails)
---------------------------
Every direction I head I hit a brick wall.
I've never heard of being able to recover data from internal SDcard after reset. Didn't think that was possible.
Click to expand...
Click to collapse
With HDDs I know it's possible as I have done it before. The only issue is not overwriting the data when reinstalling a operating system ect. Flash is abit dififfrent but still doesnt overwrite deleted data as soon as its deleted. If you're willing to try it on your gs3 first then go for it. Since the data is very important, I would have her take it to someone who specializes in data recovery instead of trying to wipe it and get the data off it just in case.
Are you able to remotely install applications though the Google Play site or by other means? Might be able to get a shell from one of the ssh server apps if they run the server on startup. If you can get a shell you should be able to work from there.

OpenSourcererSweg said:
With HDDs I know it's possible as I have done it before. The only issue is not overwriting the data when reinstalling a operating system ect. Flash is abit dififfrent but still doesnt overwrite deleted data as soon as its deleted. If you're willing to try it on your gs3 first then go for it. Since the data is very important, I would have her take it to someone who specializes in data recovery instead of trying to wipe it and get the data off it just in case.
Are you able to remotely install applications though the Google Play site or by other means? Might be able to get a shell from one of the ssh server apps if they run the server on startup. If you can get a shell you should be able to work from there.
Click to expand...
Click to collapse
I can remotely install apps via google play site. If I could find a shell that works on startup... please let me know what that does for me?

Wking46 said:
I can remotely install apps via google play site. If I could find a shell that works on startup... please let me know what that does for me?
Click to expand...
Click to collapse
SSH access may let you transfer some files on the device to another machine. (Assuming that it will connect to known wifi networks while locked)

OpenSourcererSweg said:
SSH access may let you transfer some files on the device to another machine. (Assuming that it will connect to known wifi networks while locked)
Click to expand...
Click to collapse
No such luck. Looks like all of them would need me to log in to set them up, which defeats the purpose.
I may have to wait and see if tech changes over time and keep trying until it does.

Wking46 said:
No such luck. Looks like all of them would need me to log in to set them up, which defeats the purpose.
I may have to wait and see if tech changes over time and keep trying until it does.
Click to expand...
Click to collapse
Take a look at this, https://www.nowsecure.com/blog/2015/06/16/remote-code-execution-as-system-user-on-samsung-phones/ may be able to remove the pin. Sorry if discussion about this isn't allowed or frowned upon. Seems like a pain and it may not work for the s3

OpenSourcererSweg said:
Take a look at this, https://www.nowsecure.com/blog/2015/06/16/remote-code-execution-as-system-user-on-samsung-phones/ may be able to remove the pin. Sorry if discussion about this isn't allowed or frowned upon. Seems like a pain and it may not work for the s3
Click to expand...
Click to collapse
Doesn't effect S3 vzw. only S4 and up

Wking46 said:
Doesn't effect S3 vzw. only S4 and up
Click to expand...
Click to collapse
Ah I read "swift" as Swype and my Prepaid Verizon GS3 came with Swype preinstalled.
I have an idea, perhaps try the Verizon repair software "repair" the device to back up data while in Odin mode? I don't recall if it will require a password or anything.I don't believe it required USB debugging to be enabled, don't know if it works while in Odin mode. I don't know if the backups are encrypted or not. You can try using sandboxie to see where it keeps the backed up data. I don't know if it will backup data while you're in Odin mode though. Worth trying I suppose. Don't have time try my The self or I would. Sorry for the rushed message, I'll be home in about an hour though.

HOW TO BYPASS FRP on GALAXY S7 and possibly more 6.0.1 and 7.0

Complettly Remove FRP , ie return YOUR fone to original state ie as if just bought and unregistered, without triping KNOX or any other signs Tamper switches etc being Shown!! , Current binary, official, system status = official, Secure download = enabled, Warranty Void = 0 (0x0000), AP SWREV b:1 k:0 s:0, this last bit i don't know what it is but this is the same numbers it outputted to my download screen when I first Factory Reset the fone after setting up google , making sure adb was off as OEM etc in settings, setting up a fingerprint and a 4 digit pin, and set it to activate before the fone boots.. I tried to make it as hard as i could to break, but ends up it doesnt matter anyway as all the info is in the PERSISTENCE partition, and if wiped, it thinks its never been registered, Again this comes down to security by obscurity hiding a txt file with your google details on it on a partition or anywhere just hoping no one will look there as its buried quite, well kinda deepish, is not security it laziness i forgot to dd the partition to my pc and looked to see if the info was even encrypted and what else was there in that partition as google thought it was impenetrable, just like apple does with "find my iphone" & icloud, but they are getting better am struggling with there new version, but anyway this is android here and
THIS IS HOW I DONE IT!
First Hold [Power} [HOME] and [VOLUME DOWN] all at once until a blue screen appears with stuff about non stock images et, then press [volume up], next Use ODIN.exe, which ive provided as well as every thing else needed, and flash your model version of the .tar file (included) by clicking the [BL} button on ODIN then make sure its has a tick next to it, if not click the box to tick it, then run the RUN_ME.bat file and that's that. Next just flash the STOCK version of your boot file in the way as before in the [BL] tab, sometimes a full new flash is needed via odin, but only rarely, then thats it phones like new, As in never owned before, as the script wipes the partition (PERSISTENT) that holds the username lock files.
this can be done manually as i found the files that lock the fone to the google account are in the PERSISTENCE Partition, it can be in different places per fone or model but usually in /dev/block/PERSISTENCE, or /dev/sda11 or somewhere in the /by-name/PERSISTENCE, just ls /dev/ and worm your way down till you see a PERSISTENCE then dd it by dd if=/dev/zero of=/dev/block/PERSISTENCE or wherever the partition is, simple,
if this works for youn hit hit thanks, or buy me a beer via paypal, cheers, sonnettie
Any Questions Ill answer you, Im very busy with a lot of projects just now and i just had brain surgery after been hit by a bus on a dual carriageway last year, and was in 3 hospitals in surgery for 70 hours, then a comma for six weeks,
PS, This will NOT trigger KNOX as its done at the lowest level below KNOX and before any services or apps start om the phone,
The BOOT loader you flash, all that does is start the system at its lowest level so we can run basic commands from the LINUX base of the fone, like ls, dd, df, mount, , basically like busybox when linux fails to load correctly, This is what the boot file does, first it start adb from its end then it loads only so far, not even to the point where the android flashes, it halts at the Galaxy S7, logo before the loading screen, so nothing loads at all.
The files can be downloaded from here... Files For Removing FRP, Knox Trip=NO, FRP=OFF, ALL Official!!
THIS IS PoC and some files and info to proof it, this was just to show how i was the first person do do this and not charge you for it, yes it need alterations for alternative fones if you cant figure how to do that dont just plug your fone into your pc and start pressing random buttons switches command etc again its PoC for this fone with info on "How to" with other android 6/7 fones thats all if you need a push one button flashy tool im not here for that only to help some one else do that ive done the technical part a app coder can make you a a plug and unlock tool, that was not my intention just to help and stop someone else finding this first and charging every one for it as this can be done remotely if you understand how it works using an apk but whatever........

sonnettie said:
Use ODIN.exe which ive provided as well as every thing else needed to flash your model version of the .tar file (included) the run the RUN_ME.bat file , that's it FRP=OFF , Then just flash the STOCK version of your boot file in the [BL] tab, sometimes a full new flash is needed via odin, but only rarely, then thats it phones like new, As in never owned before, as the script wipes the partition (PERSISTENT) that holds the username lock files.
this can be done manually as i found the files that lock the fone to the google account are in the PERSISTENCE Partition, it can be in different places per fone or model but usually in /dev/block/PERSISTENCE, or /dev/sda11 or somewhere in the /by-name/ folder just ls /dev/ and worm your way in till you see a PERSISTENCE and dd it by dd if=/dev/zero of=/dev/block/PERSISTENCE or wherever the files are, simple,
if this work hit thanks, cheers, sonnettie
PS this is for people that bought a fone and reset it and cant contact the owner or setup a google account on the spot and cant remember any of it, IT IS NOT to be used for STOLEN fones or ILLEGAL USES, and you should never have had to pay for this!!!!
The files can be downloaded from here... https://drive.google.com/open?id=0ByZUWMZ-VMvtMVJ1TE5memt5c0U
Click to expand...
Click to collapse
Hi
Unfortunately this will be use for illegal purposes........
You say to flash the boot file of the phone before running the bat file , why ? what boot file is that?
Do i need to be root?
If not root , will this trigger knox 0x 1 ?

mistake sorry.....

MAX 404 said:
Hi
Unfortunately this will be use for illegal purposes........
You say to flash the boot file of the phone before running the bat file , why ? what boot file is that?
Do i need to be root?
If not root , will this trigger knox 0x 1 ?
Click to expand...
Click to collapse
No no need for root to do this, and no it triggers nothing as the fone doesn't get a chance to boot while its done, hope this helps
and yes, just as the factory reset salute before FRP was, and the screwdriver, knife, car, printer, computer, even fones can be used for illegal purposes, but that NOT US, and we discourage that were helping people that as i see happening a very lot people buy a new fone set up google with anything that comes to mind cos the got a yahoo, or hotmail email, or maybe don't even use them so the just type any random sh!t into the fone thinking they will never use it, then some thing like this happens, before all you had to do was the three finger salute (factory reset) for them and try to warn them use memorable email passwords etc or even write them down in a book somewher, bad sec, but if it a 75 yr old woman coming to you every day coz she cant access here play store to get facebook, or whatever, then its better this way don't you think, with the obvious exception tell them not to use internet banking or there credit card online.

sonnettie said:
No no need for root to do this, and no it triggers nothing as the fone doesn't get a chance to boot while its done, hope this helps
and yes, just as the factory reset salute before FRP was, and the screwdriver, knife, car, printer, computer, even fones can be used for illegal purposes, but that NOT US, and we discourage that were helping people that as i see happening a very lot people buy a new fone set up google with anything that comes to mind cos the got a yahoo, or hotmail email, or maybe don't even use them so the just type any random sh!t into the fone thinking they will never use it, then some thing like this happens, before all you had to do was the three finger salute (factory reset) for them and try to warn them use memorable email passwords etc or even write them down in a book somewher, bad sec, but if it a 75 yr old woman coming to you every day coz she cant access here play store to get facebook, or whatever, then its better this way don't you think, with the obvious exception tell them not to use internet banking or there credit card online.
Click to expand...
Click to collapse
Hi Mate
why we need to flash another boot loader?

the bootloader activates ADB and only boot so far into the system before the Android Virtual Machine starts so we are running on pure linux so no KNOX or any other checkers are running and never know whats going on or happened as its as if they where in a comma at the time lol,
any other questions please ask, sonnettie

Does the latest security patch fix this flaw?

Nope still works

From what i read and what i understood, with this can you restore Knox to 0x0 from 0x1?

Thanks for posting this fix- i literally spent the last day trying to remove the frp lock off a legitimate purchase from ebay. Google has managed to close all the exploits out there on ****-tube and nothing other than paying some other programmer to do this (probably exact thing for a profit) This is why I keep coming back to xda developers. I'm not here for profit or nefarious reasons. I want my phone to work the way it's supposed to without all the bloatware and bull****. You rock and I appreciate it!

Hello,
I think no one has try this unlock method.
Because i think it cant work.
I have seen in the runme.bat there is script error at the end,
where it should be
dd if=/dev/zero of=/dev/block/...
Anyways, it is maybe just a fake when frp unlock methods was fixed?

FLash the boot file then run bat, then while running bat flash the recovery file?
First flash the recovery or the boot? Then run the bat, while running the bat flash the recovery? Please explaina little as I am having trouble with g935usa.

the boot file included in the file i left here

andrei1412 said:
From what i read and what i understood, with this can you restore Knox to 0x0 from 0x1?
Click to expand...
Click to collapse
yes u can, makes it a new fone electronically

XDALies said:
This is a complete load of bull****! The OP claims to have given all the files needed to get around the FRP, but ironically there are no files for the AT&T S7 or the SM-G930A ! If you're too stupid to bypass FRP on the AT&T Variant, just admit it!
Click to expand...
Click to collapse
look at the amount of people how have followed my instructions including ME! and it works on any android frp locked or ox1 fone , Muppet

AMAZING!!!
Finally a slution!! Thanks a lot mate! Feel better!

sonnettie said:
t FRP=OFF ,
First Hold [Power} [HOME] and [VOLUME DOWN] all at once until a blue screen appears with stuff about non stock images et, then press [volume up], next Use ODIN.exe, which ive provided as well as every thing else needed, and flash your model version of the .tar file (included) by clicking the [BL} button on ODIN then make sure its has a tick next to it, if not click the box to tick it, then run the RUN_ME.bat file and that's that. Next just flash the STOCK version of your boot file in the way as before in the [BL] tab, sometimes a full new flash is needed via odin, but only rarely, then thats it phones like new, As in never owned before, as the script wipes the partition (PERSISTENT) that holds the username lock files.
Click to expand...
Click to collapse
I just used Odin with the 930 Boot.tar file. And my phone is now in a permanent restart loop. What did I do wrong? And what do I do now to get it out of loop?
~~Fixed that problem. Still don't know what happened, but I didn't bypass FRP. My phone is sm-g930p. And I used the "G930_USA_(QUALCOMM)_BOOT" file first. Instructions were very unclear.

how to I do this to a SM-G930W8 model as i cannot get them files to work with it.

Since i am a newbie in flashing phones ...
What Zip do i need to select in Odin for the SM-930F (there are two versions of it in there both marked with "stock")

Does this work on the G930A? I assume latest update (7.1 possibly?).

Question BYPASSING DISK ENCRYPTION [SM-A125F]

Hello everyone,
So I've been off the fourms for quite some time, woun't go in detail about that. And as some might know I've broke my LCD touch screen. I got a replacement and replaced it with no isuess, works perfectly.
But...
I forgot the gesutre key I set on this phone because I haven't used it for months, and used my other A217F for the replacement.
I haven't been doing anything related to android so I forgot quite the stuff I use to know. My question is how can I bypass the disk encryption and pull the GESTURE.KEY from USERDATA. It OEM unlocked, rooted via magisk, and runs TWRP custom recovery. This is quite the older version of TWRP. I can flash it to the new one but the SYSTEM root is still under encryption. Idk if maybe I can dissasemble it from the SCATTAR, or pulling it via ADB (wich probably woun't work). I also want to help others who want to achive this so that's also one of the points for this thread. I'll list some of the info of this phone:
SM-A125F
BUF9 firmware SW_REV 1
Patched BOOT and VBMETA images via magisk
Custom recovery (TWRP)
Fixed IMEI and BASEBAND
Thanks,
Krypton

You can't bypass encryption.That's the point of it.To make sure the data is unreadable without the right key.If there was a way to read encrypted data without the key then it would be pointless

jesus201820 said:
You can't bypass encryption.That's the point of it.To make sure the data is unreadable without the right key.If there was a way to read encrypted data without the key then it would be pointless
Click to expand...
Click to collapse
Yea Ik the point is it can still be forceivly disabled via running unsinged firmware. It's OEM unlocked, I should have every ability possible.

Brick. Stuck at "Qualcomm Crashdump"

Hi all,
My op6 is stuck, unable to reboot normally with the famous Qualcomm Crashdump mode message.
The phone has the bootloader unlocked, with TWRP recovery.
1 day ago I could access the recovery even reboot with the power+volume buttons, but it got to a point where it crashes all the time, unable to do anything.
Currently is only able to enter fastboot mode.
I have heard about the MSMDownload Tool.
- Does this tool keep the files/data in the internal memory?
For me the most important thing is to be able to recover the data.
The qualcom dumpcrash mode returns several different messages like:
- stack-protector kernel stack is corrupted in:--schedule*0xB90/OXOd0 (not exact numbers)
- fatal exceptinforece_signalinject.isra.8
Is there any chance of trying something?
I am extremely anxious and worried about the situation
Please help.

Ganapatya said:
Hi all,
My op6 is stuck, unable to reboot normally with the famous Qualcomm Crashdump mode message.
The phone has the bootloader unlocked, with TWRP recovery.
1 day ago I could access the recovery even reboot with the power+volume buttons, but it got to a point where it crashes all the time, unable to do anything.
Currently is only able to enter fastboot mode.
I have heard about the MSMDownload Tool.
- Does this tool keep the files/data in the internal memory?
For me the most important thing is to be able to recover the data.
The qualcom dumpcrash mode returns several different messages like:
- stack-protector kernel stack is corrupted in:--schedule*0xB90/OXOd0 (not exact numbers)
- fatal exceptinforece_signalinject.isra.8
Is there any chance of trying something?
I am extremely anxious and worried about the situation
Please help.
Click to expand...
Click to collapse
to start: it's good thing that you can get into fastboot mode. From there you should be able to do a complete re-install of your device, e.g. using the official LineageOS instructions.
Now to your situation: unfortunately you don't write too much about it like, is your phone running stock OOS or some custom ROM? If it's a custom ROM I'd say you open a topic in the according thread. Then: how much do you know about flashing recoveries, ROMs etc.
Regarding your data: in your current situation it may be extremely difficult if not impossible to secure any personal data now. How I understand it you cannot access the crucial partitions from the bootloader, at least I never heard of methods to get there. Although, people more knowledgeable than me may know of ways. So I do hope you are having recent backups at hand, on your PC or where-ever.
In that case I would start all over (and that's how I got out of a similar situation several months ago): flash recovery, flash latest OOS to both slots, factory reset / wipe everything (to remove any encrypted data you won't be able to access anyways), flash you ROM of choice incl. other part like GAPPS, if needed, do basic setup and then finally try to recover anything that is in you backups.
I wish you a lot of patience and good luck, you'll need it, I'm afraid.

lm089 said:
to start: it's good thing that you can get into fastboot mode. From there you should be able to do a complete re-install of your device, e.g. using the official LineageOS instructions.
Now to your situation: unfortunately you don't write too much about it like, is your phone running stock OOS or some custom ROM? If it's a custom ROM I'd say you open a topic in the according thread. Then: how much do you know about flashing recoveries, ROMs etc.
Regarding your data: in your current situation it may be extremely difficult if not impossible to secure any personal data now. How I understand it you cannot access the crucial partitions from the bootloader, at least I never heard of methods to get there. Although, people more knowledgeable than me may know of ways. So I do hope you are having recent backups at hand, on your PC or where-ever.
In that case I would start all over (and that's how I got out of a similar situation several months ago): flash recovery, flash latest OOS to both slots, factory reset / wipe everything (to remove any encrypted data you won't be able to access anyways), flash you ROM of choice incl. other part like GAPPS, if needed, do basic setup and then finally try to recover anything that is in you backups.
I wish you a lot of patience and good luck, you'll need it, I'm afraid.
Click to expand...
Click to collapse
Thank you for your reply.
is your phone running stock OOS or some custom ROM?
Click to expand...
Click to collapse
Stock OOS, android 10, last release.
Then: how much do you know about flashing recoveries, ROMs etc.
Click to expand...
Click to collapse
I have basic experience installing customs roms, rooting, twrp, unlock fastboot...following tutorials, of course.
Regarding your data: in your current situation it may be extremely difficult if not impossible to secure any personal data now. How I understand it you cannot access the crucial partitions from the bootloader, at least I never heard of methods to get there. Although, people more knowledgeable than me may know of ways. So I do hope you are having recent backups at hand, on your PC or where-ever.
Click to expand...
Click to collapse
here someone says that in theory it would be possible if you have the usb debugging enable, but silly me I had it open but I deactivated it I think, so I'm not sure if I have access or not.
OnePlus 6 Stuck At "Qualcomm Crashdump" Screen All A Sudden | Data Retrieval Critical
Hi good people at XDA. This is my first post on this website and I am absolutely hoping to receive help from you all to find a way out of the depressing and extremely anxious situation I'm in. I was using my OP6 normally today and while I was...
forum.xda-developers.com
Code:
adb devices
mkdir "C:\RECOVERED_DATA"
adb pull /sdcard C:\RECOVERED_DATA
and then finally try to recover anything that is in you backups.
Click to expand...
Click to collapse
but if I do all that flashing process any backups that are in the internal memory will be erased, right?
I had photos, files, whatsapp chat history, documents...etc and they were all in the internal memory. It is not a great loss but it is important for me to be able to recover it.
in your current situation it may be extremely difficult if not impossible to secure any personal data now
Click to expand...
Click to collapse
for me it is more important to recover the files than to recover the phone. your words are discouraging
I have read other posts and maybe being able to install on top (dirty install) the same rom I have, would leave the system as it, is being able to access my files. Not even installing the whole rom but extracting the boot image from the rom and then installing it. but I don't know if I can install a rom or boot image from fastboot, or if I need to have a working TWRP first.
It is said here:
- https://forum.xda-developers.com/t/...over-without-data-loss.4080725/#post-82257413
- https://forum.xda-developers.com/t/...over-without-data-loss.4080725/#post-82261087

Ganapatya said:
your words are discouraging
Click to expand...
Click to collapse
of course that is not my intention. I just try to be realistic
As I wrote in my post, my knowledge is quite basic. I know what I read , and what I experienced with my different devices. So again: you may find instructions and real-life stories showing you ways out of there.
My experience is that you cannot connect your OP6 phone to your PC via ADB while in bootloader / fastboot mode.
a) It's either one or the other: bootloader <=> fastboot or recovery / system <=> adb. Other devices may have different options but we're not talking about Samsung but about OP.
b) I did some additional research last night but I couldn't find a single source talking about *read* access to user data from fastboot. All you can do there is flash i.e. overwrite partitions
c) keep in mind that most probably your personal data are encrypted. So even if you find a way to access your personal data from bootloader / fastboot you may not be able to read it
d) I never used MSMtool, never had to. But I did some more research about it. It looks as if you could re-flash stock ROM using that tool but to the cost of wiping everything. At least that is what the tutorials I found are saying
That said I'd say you don't have much to lose and can go trying out some things.
From my experience the qualcomm crashdump error can have it's source in a malfunctioning recovery solution; I had that when flashing a wrong TWRP version that would not be in harmony with the previously flashed OOS firmware.
From what I read our devices don't have a separate recovery partition, instead it somehow lives somewhere/somehow in the boot partition (experts: please don't crucify me if that is wrong ). So if that is the case one idea would be to extract the boot image from the stock ROM image then flash that to /boot/ from fastboot. Don't know whether that really works and helps, but in theory you would have a default boot partition and kernel *without* a conflicting recovery solution.
In case you're successful you may be able to boot into system and make backups of everything that's valuable to you.
Again: this is extremely wild guessing here, and you'll have to read in a bit on how to properly extract parts of the ROM image.
I also would *strongly* recommend that you continue asking for help in a more technical thread like the LOS19.1 one or Funk Wizard's thread about unlocking and flashing our OP6.
I wish you all luck you need!

I think your best bet it a HW solution, get someone to:
1. replace the modem IC, it's the possible cause of the qualcomm crash
2. solder a direct connection to the internal memory so you can recover your data