Reboot Lenovo P2 in serial communication mode (COM & LPT) - Lenovo P2 Questions & Answers

I messed up several things (mainly modem). I have tried several things, but now I want to try this https://forum.xda-developers.com/lenovo-p2/how-to/how-to-restore-lenovo-p2-hard-brick-t3652900
It requires you to start Lenovo P2 in serial boot. But my phone is not bricked, so I can load bootloader, recovery, and never able to start in serial console mode.
My question is how do I start it in serial console mode? I have fastboot/ADB/TWRP, so any solution is welcomed.

Related

Bricked Lenovo Vibe shot z90-7, no edl, fastboot twrp and locked bootloader.

I got a lenovo vibe shot z90-7 which was using Android 5.1. I found an upgrade rom on needrom to 6.0. I flashed it using qfil (qualcomm flashing tool) and it went all right, all functional. But I also wanted to unlock the bootloader and install a twrp (I found a procedure and twrp image on a russian forum). I followed the steps but it didn't work, I still wasn't able to unlock the bootloader. Thus, I was not able to enter fastboot anymore: from adb I was typing "adb reboot bootloader" and the device would reboot normally, not in fastboot mode. I decided to change to another rom (from needrom) which was claiming would allow you to unlock the bootloader. So, without hesitation I flashed it in qfil (edl mode) and it went all right, but I got stuck in boot loop. After the splash screen, the device shuts the screen off and does a long vibration and stays like that. If I connect it via usb to my pc I get a some "need to format drive" alerts, and in qfil I see "Qualcomm HS-USB Diagnostic 9006 (COM5)". If then I try to flash the rom I get this log:
Code:
Start Download
COM Port number:5
Switch To EDL
Download Fail:System.Exception: Failed to Switch to Emergency Download mode
at QC.QMSLPhone.Phone.QPHONEMS_SwitchToEDL()
at QC.SwDownloadDLL.SwDownload.SwitchToEDL()
Download Fail:Switch To EDL FailSystem.Exception: FireHose Fail
at QC.SwDownloadDLL.SwDownload.SwitchToEDL()
at QFIL.Tech.DownloadTech.SwitchToEDL()
Finish Download
It's seems like I need to get in Edl mode first, but I cannot use adb and pushing vol+ and plug the usb at the same time (or a little bit first one or the other, I tried all) does't do anything but booting the device normally.
I also tried getting in fastboot mode (keep vol- and power button) but it doesn't work.
I read of an "engineering mode" by keeping vol- on boot. It does something, the screen becomes black, but it's on. On my pc the adb driver comes in in the popup, like if I'm in fastboot or adb, but on "fastboot devices" I can't see anything, while on "adb devices" I see a device, which is "? unauthorized". Strange to me, I can't do much with it since it's unauthorized and the screen on the device remains black. And after a few seconds (about 30) it gets back to long vibration and screen off state.
I can get into the stock recovery by holding vol+, vol- and power, but it's a very poor recovery. All I can do is reboot, shut down, wipe data and update. I tried to use "update" and put a zip file of an official rom downloaded into the sd card and named "update.zip" as suggested by the recovery, but I get an error (with no technical information about what kind of error), so no luck with that either.
I tried to force the qualcomm driver from "Qualcomm HS-USB Diagnostic 9006 (COM5)" to "Qualcomm HS-USB QDLoader 9008 (COM5)", then tried to flash using qfil, but I still get an error, even if this time is different:
Code:
COM Port number:5
Sahara Connecting ...
Sahara Version:0
Start Sending Programmer
Download Fail:System.Exception: Unable to download Flash Programmer using Sahara Protocol
at QC.QMSLPhone.Phone.QPHONEMS_SaharaArmPrgDownload(String sFileName)
at QC.SwDownloadDLL.SwDownload.QPHONEMSSaharaDownloadArmPrg(UInt64& version, String armPrgPath)
Download Fail:Sahara FailSahara Fail
Finish Download
I finally tried to download the rom in .qsb format and get in engineering mode again, but the screen remains black and no sign of flashing possibilities.
Please help, I tried everything it came to my mind.
I also tried with miflash, but still got errors...
Thank you
Hello, did you solve the problem? i have the same as you....
regards
Hi guys.
I had the similar problem few moths ago. I tried to remember what i've done to fix it, but I don't remember all things, I hope this steps helps to find the solution.
Check this:
-Use Windows 7 (I tried with Windows 10 and always appears some errors)
-Use original miniUSB cable or good quality cables
-Install Lenovo Usb drivers
Turn ON phone and press Vol+ and Vol-, hold 3 seconds
If you cant enter Recovery mode (because is corrupt or bricked), phone will vibrate for 1-2 seconds and screen keep black. Now connect USB cable (check drivers, also if Qualcomm HS-USB QDLoader 9008 was installed)
Once you done, use QSFL or MiFlash (but not 2016 version!, never works to flash)
NOTE: I had some problems with my desktop computer with Windows 7 but no problem in laptop. So check it in more than one...
Good luck.
How I fixed this
I fixed it installing a update.zip via recovery (vol + plus vol - plus power) I found here
http://forum.xda-developers.com/android/development/vibe-shot-6-0-update-root-xposed-t3409989
This not fixed the phone , but allowed me to unlock bootloader entering in fastboot mode (vol + plus vol - plus plug usb) using this
http://lenovo-forums.ru/topic/18149-lenovo-vibe-shot-разблокировка-bootloader/
Then I was allowed to install TWRP as explained here
http://lenovo-forums.ru/topic/18150-lenovo-vibe-shot-расширенное-рекавери-twrp-by-sevenmaxs/
Then I was able to go to TWRP terminal and type
reboot edl
Phone went into downloader mode and I was able to install this rom with QFIL
http://www.needrom.com/download/lenovo-vibe-shot-android-6-0-1-1625-encn-unlocked/
and I restored NVRAM with a qcn file I found in Ebay after putting the phone in diagnostics mode. Then I changed imeid, meid and esn to the original ones I found in the box. Phone fixed.
Just note that this file was for a Z90-7 rom and it will not work with a Z40a20 rom.
Hope this helps someone.
francesco9696 said:
I got a lenovo vibe shot z90-7 which was using Android 5.1. I found an upgrade rom on needrom to 6.0. I flashed it using qfil (qualcomm flashing tool) and it went all right, all functional. But I also wanted to unlock the bootloader and install a twrp (I found a procedure and twrp image on a russian forum). I followed the steps but it didn't work, I still wasn't able to unlock the bootloader. Thus, I was not able to enter fastboot anymore: from adb I was typing "adb reboot bootloader" and the device would reboot normally, not in fastboot mode. I decided to change to another rom (from needrom) which was claiming would allow you to unlock the bootloader. So, without hesitation I flashed it in qfil (edl mode) and it went all right, but I got stuck in boot loop. After the splash screen, the device shuts the screen off and does a long vibration and stays like that. If I connect it via usb to my pc I get a some "need to format drive" alerts, and in qfil I see "Qualcomm HS-USB Diagnostic 9006 (COM5)". If then I try to flash the rom I get this log:
Code:
Start Download
COM Port number:5
Switch To EDL
Download Fail:System.Exception: Failed to Switch to Emergency Download mode
at QC.QMSLPhone.Phone.QPHONEMS_SwitchToEDL()
at QC.SwDownloadDLL.SwDownload.SwitchToEDL()
Download Fail:Switch To EDL FailSystem.Exception: FireHose Fail
at QC.SwDownloadDLL.SwDownload.SwitchToEDL()
at QFIL.Tech.DownloadTech.SwitchToEDL()
Finish Download
It's seems like I need to get in Edl mode first, but I cannot use adb and pushing vol+ and plug the usb at the same time (or a little bit first one or the other, I tried all) does't do anything but booting the device normally.
I also tried getting in fastboot mode (keep vol- and power button) but it doesn't work.
I read of an "engineering mode" by keeping vol- on boot. It does something, the screen becomes black, but it's on. On my pc the adb driver comes in in the popup, like if I'm in fastboot or adb, but on "fastboot devices" I can't see anything, while on "adb devices" I see a device, which is "? unauthorized". Strange to me, I can't do much with it since it's unauthorized and the screen on the device remains black. And after a few seconds (about 30) it gets back to long vibration and screen off state.
I can get into the stock recovery by holding vol+, vol- and power, but it's a very poor recovery. All I can do is reboot, shut down, wipe data and update. I tried to use "update" and put a zip file of an official rom downloaded into the sd card and named "update.zip" as suggested by the recovery, but I get an error (with no technical information about what kind of error), so no luck with that either.
I tried to force the qualcomm driver from "Qualcomm HS-USB Diagnostic 9006 (COM5)" to "Qualcomm HS-USB QDLoader 9008 (COM5)", then tried to flash using qfil, but I still get an error, even if this time is different:
Code:
COM Port number:5
Sahara Connecting ...
Sahara Version:0
Start Sending Programmer
Download Fail:System.Exception: Unable to download Flash Programmer using Sahara Protocol
at QC.QMSLPhone.Phone.QPHONEMS_SaharaArmPrgDownload(String sFileName)
at QC.SwDownloadDLL.SwDownload.QPHONEMSSaharaDownloadArmPrg(UInt64& version, String armPrgPath)
Download Fail:Sahara FailSahara Fail
Finish Download
I finally tried to download the rom in .qsb format and get in engineering mode again, but the screen remains black and no sign of flashing possibilities.
Please help, I tried everything it came to my mind.
I also tried with miflash, but still got errors...
Thank you
Click to expand...
Click to collapse
Hi, did you slove the problem? Same situation with me. But I managed to install twrp ( Chinese) but I can't install any rom .. After successful flashing it reboot with lenovo logo, then long vibrates.. When I connect it to PC. It show number of partition and need to format popup.. I tried different ROMs.. All via twrp. I don't use miflash or qfil.. If you have solved it please share how. Thanks.
i know how to enter in edl mode in z90-7 or z90a40
Hello
This is nisar I successfully entered in edl mode and flashed rom to know the procedure pm me on +919743392420 WhatsApp
Bricked Vibe Shot - multiple partitions in device manager - no edl
having read all the above I'd like to share small info once again, it is all about correct qualcomm drivers, you can get them from androidurdu.net, do not search on the site but click on mobile drivers then scroll down and download qualcomm usb drivers.zip . unpack and use "checked" folder within the zip, they are signed and work on any windows including 10th. You see, your brick might be having an edl times, but PC doesn't know without proper drivers installed. You might want to remove all earlier/bad driver versions, for example try sigverif command or just install below qualcomm drivers and try away.
1. connect phone with good usb cable, 2. press power button till it shuts, then release power button and press volume up and down same time and phone will enter edl mode itself almost instantly, if you had twrp installed then it'll enter there, if so run from terminal "reboot edl"; keep device manager open and comm tree will appear along.
other way is via adb reboot edl command, if fastboot doesn't work, or fastboot reboot-edl
on miflash when refreshed you see the short port name and the number like com4 or 3. now it's time to flash, but the last proven flash I did with QiFL, Miflash works as fine.
i used latest international marshmallow version. after first boot, within dev mode unlocked oem + enabled adb and connected to PC with phone turned on in order to accept handshake prompt.
unlocking bootloader is easy via adb command: adb reboot bootloader, then: adb bootloader unlock-go .
all files are available online via some russian speaking forum, you just need to install twrp, then place su.zip onto phone (I copied on internal memory), boot into twrp and flash; if clean - no errors flash then you got neatly rooted marshmallow phone.
my struggle with bricked vibe shot was worth it. earlier I noticed cpu was running high, all cores all the time. also many google apps which I wanted to eliminate for draining the battery and uploading stuff all the time.
right after flashing su.zip boot into phone and install kernel adiutor from play store, then take control of how your 8 cores behave. I discovered the minimums were set at 800+Mhz so I dropped them to 200, then below within cpu section enabled all "disabled" options for boost + enabled "ondemand" + plus few more. You got to understand the process and enjoy tuning your phone your way.
I've charged my vibe shot 3 hours ago and was randomly chatting on whatsap until now and I have 73% battery. Day before yesterday before the bricking, full charge would not last more than 3 hours, incredible battery performance thanks to "adiutor" .
One more important thing, use correct rom version for your phone because of advanced camera and specific drivers camera won't work well.
Names of files used to make my phone a super hero:
1. adb-setup-1.4.2.exe
2. Miflash_140509.exe
3. Qualcomm_USB_Drivers.7z via androidurdu.net
4. TWRP-3.0.2.0_Z90a40_by_SevenMaxs.rar - has .bat files inside; enter bootloader mode and shoot
5. UPDATE-SuperSU-v2.76-SYSTEMMODE-PRO.zip (I pay for my apps including supersu pro)
6. Z90a40_Android-L_unlock_7M.7z , or use command line via adb shell.
7. Z90a40_S363_160625_ROW_QPST.7z - latest intl Mashmallow Os , to make it more perfect download marshmallow google dialer - patched.apk.
8. QPST / QIFL , used to flash the above rom
I'm not a pro so small mistakes are acceptable, I hope.
ciao.
francesco9696 said:
I got a lenovo vibe shot z90-7 which was using Android 5.1. I found an upgrade rom on needrom to 6.0. I flashed it using qfil (qualcomm flashing tool) and it went all right, all functional. But I also wanted to unlock the bootloader and install a twrp (I found a procedure and twrp image on a russian forum). I followed the steps but it didn't work, I still wasn't able to unlock the bootloader. Thus, I was not able to enter fastboot anymore: from adb I was typing "adb reboot bootloader" and the device would reboot normally, not in fastboot mode. I decided to change to another rom (from needrom) which was claiming would allow you to unlock the bootloader. So, without hesitation I flashed it in qfil (edl mode) and it went all right, but I got stuck in boot loop. After the splash screen, the device shuts the screen off and does a long vibration and stays like that. If I connect it via usb to my pc I get a some "need to format drive" alerts, and in qfil I see "Qualcomm HS-USB Diagnostic 9006 (COM5)". If then I try to flash the rom I get this log:
Code:
Start Download
COM Port number:5
Switch To EDL
Download Fail:System.Exception: Failed to Switch to Emergency Download mode
at QC.QMSLPhone.Phone.QPHONEMS_SwitchToEDL()
at QC.SwDownloadDLL.SwDownload.SwitchToEDL()
Download Fail:Switch To EDL FailSystem.Exception: FireHose Fail
at QC.SwDownloadDLL.SwDownload.SwitchToEDL()
at QFIL.Tech.DownloadTech.SwitchToEDL()
Finish Download
It's seems like I need to get in Edl mode first, but I cannot use adb and pushing vol+ and plug the usb at the same time (or a little bit first one or the other, I tried all) does't do anything but booting the device normally.
I also tried getting in fastboot mode (keep vol- and power button) but it doesn't work.
I read of an "engineering mode" by keeping vol- on boot. It does something, the screen becomes black, but it's on. On my pc the adb driver comes in in the popup, like if I'm in fastboot or adb, but on "fastboot devices" I can't see anything, while on "adb devices" I see a device, which is "? unauthorized". Strange to me, I can't do much with it since it's unauthorized and the screen on the device remains black. And after a few seconds (about 30) it gets back to long vibration and screen off state.
I can get into the stock recovery by holding vol+, vol- and power, but it's a very poor recovery. All I can do is reboot, shut down, wipe data and update. I tried to use "update" and put a zip file of an official rom downloaded into the sd card and named "update.zip" as suggested by the recovery, but I get an error (with no technical information about what kind of error), so no luck with that either.
I tried to force the qualcomm driver from "Qualcomm HS-USB Diagnostic 9006 (COM5)" to "Qualcomm HS-USB QDLoader 9008 (COM5)", then tried to flash using qfil, but I still get an error, even if this time is different:
Code:
COM Port number:5
Sahara Connecting ...
Sahara Version:0
Start Sending Programmer
Download Fail:System.Exception: Unable to download Flash Programmer using Sahara Protocol
at QC.QMSLPhone.Phone.QPHONEMS_SaharaArmPrgDownload(String sFileName)
at QC.SwDownloadDLL.SwDownload.QPHONEMSSaharaDownloadArmPrg(UInt64& version, String armPrgPath)
Download Fail:Sahara FailSahara Fail
Finish Download
I finally tried to download the rom in .qsb format and get in engineering mode again, but the screen remains black and no sign of flashing possibilities.
Please help, I tried everything it came to my mind.
I also tried with miflash, but still got errors...
Thank you
Click to expand...
Click to collapse
have you try
adb reboot edl
Hey, I have the same problem as you, trying to do the step you did, but I get stucked at the first step,
I cannot find the file UPDATE.ZIP in the page from your link....
Could you help?
Thanks
josepgb said:
I fixed it installing a update.zip via recovery (vol + plus vol - plus power) I found here
http://forum.xda-developers.com/android/development/vibe-shot-6-0-update-root-xposed-t3409989
This not fixed the phone , but allowed me to unlock bootloader entering in fastboot mode (vol + plus vol - plus plug usb) using this
http://lenovo-forums.ru/topic/18149-lenovo-vibe-shot-разблокировка-bootloader/
Then I was allowed to install TWRP as explained here
http://lenovo-forums.ru/topic/18150-lenovo-vibe-shot-расширенное-рекавери-twrp-by-sevenmaxs/
Then I was able to go to TWRP terminal and type
reboot edl
Phone went into downloader mode and I was able to install this rom with QFIL
http://www.needrom.com/download/lenovo-vibe-shot-android-6-0-1-1625-encn-unlocked/
and I restored NVRAM with a qcn file I found in Ebay after putting the phone in diagnostics mode. Then I changed imeid, meid and esn to the original ones I found in the box. Phone fixed.
Just note that this file was for a Z90-7 rom and it will not work with a Z40a20 rom.
Hope this helps someone.
Click to expand...
Click to collapse
Sorry if it's reviving the thread but i found a way to unbrick the device from this state. Not sure if will work for all models because this one was a really weird one (almost all button combinations were different than any described on the internet). So my phone was from China (Z90-7 - later it showed that it's a Z90A40 and I had to flash that firmware) with a international chinese ROM and it god badly bricked (no edl, no lenovo recovery, locked bootloader etc. etc.). Now, when holding [vol+]+[vol-]+[pwr] (usually recovery mode according to the internet) it went into the Qualcomm 9006 diagnostics mode that shows a million partitions. There was no way i could get it into edl mode but there was the so called factory mode that is accessed by holding [vol-] and plugging in the usb before it vibrates. Through this I managed to flash firmware in .qsb format from a SD card and successfully unbricked the phone that I almost threw into the bin.
1. Check if your phone has "factory mode" [vol-]+[pwr] then release [pwr] or hold [vol-] while inserting usb cable.
- make sure to try different combinations, the button combinations on my phone were much different than what I mostly found on the internet
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
2. Download Vibe Shot firmware in .qsb format (Google it, the phone will warn you if it's not the right one (A40 or -7))
3. Copy the .qsb file into SD:/sdfuse
4. Insert the SD card into the phone (maybe a restart will be needed for it to be detected, you should see a message saying "DEV: External storage" when you select sd flash)
5. Select "SD update" and follow the instructions.
I hope this helps someone who can access the factory mode. This is so easy and I couldn't believe that there is so little information on flashing it this way.
Good luck.
i wonder how do you change HS-USB Qualcomm 9006 become HS-USB Qualcomm 9008?

G4 doesn't boot, doesn't factory reset and reboot itself during kdz flash

Hello!
I'm trying to flash an H815AR with v20.KDZ and LGUP, but I'm struggling, first to get it to boot into firmware update mode (when I press vol up button and connect the usb from the pc to the phone it's a lottery to get it into download mode and even there I need to play lottery again to see if it boots into firmware update mode, which happened only two times on 20 tries), and then it reboot itself during the update and the program LGUP will show an error message that the phone has been disconnected (tried diferent cables).
The phone wont't start, and factory reset will do nothing (just freez the phone).
Sometimes the phone is recognized as "Qualcomm HS-USB QDLoader 9008(COMx)" where the x is the port number, and if I'm lucky I can get it into download mode only to see that it's not being recognized.
If I get lucky on firmware update mode, it shows on device manager like this "LGE AndroidNet USB Serial Port".
I have tried in diferent computers, both with win 10.
Any suggestion is more than welcome!

MOTO G6 - Qualcomm - EDL Mode

Hi,
I'm after some advice, how do I place the Moto G5 in Qualcomm mode or EDL mode.
I have entered the bootloader by holding down and turning the phone on, this allows me to use fastboot.
From there I can scroll down to QCOM, but when I press the power button it boots into the normal system instead of EDL mode.
I have also attempted from within fastboot to use:
fastboot oem edl
fastboot oem qcom-on
fastboot reboot emergency
and
fastboot reboot-edl
Although non of these have been sucessful.
I also have access to an EDL cable, although, when I plug the phone in, then flick the switch 10 seconds later, it does not enter EDL mode, it just charges.
The phone sometimes shows as File Storage Linux USB Gadget in device manager, although it is inaccessible, I have updated the laptop to use the qualcomm drivers, although I don't think it will ever recognise it if I can't put the phone into qualcomm mode to begin with.
Any help would be much appreciated.
What are you actually attempting to do?
This mode is generally used to unbrick a device but you have access to the bootloader/fastboot mode and you wouldn't use edl mode to unbrick this device anyway
It's also used on some device to unlock the bootloader but again you wouldn't do that with this device
So without knowing what you are trying to achieve I can't give you any advice
Technically if you start the phone normally then enable usb debugging in dev options then connect phone to PC and in a terminal window where you have adb set up type
adb reboot edl
Not all devices support this mode though and I've no idea if this one does
TheFixItMan said:
What are you actually attempting to do?
This mode is generally used to unbrick a device but you have access to the bootloader/fastboot mode and you wouldn't use edl mode to unbrick this device anyway
It's also used on some device to unlock the bootloader but again you wouldn't do that with this device
So without knowing what you are trying to achieve I can't give you any advice
Technically if you start the phone normally then enable usb debugging in dev options then connect phone to PC and in a terminal window where you have adb set up type
adb reboot edl
Not all devices support this mode though and I've no idea if this one does
Click to expand...
Click to collapse
Without going into too much detail as to why, there are tools I have access to which can be used to take a full back up of the entire memory block of the phone when it is in Qualcomm mode.
I cannot access adb on the device to use "adb reboot edl" so I am limited to either trying to activate Qualcomm using a button combination or via fastboot, unless you can advise another way.
Any help or a point in the right direction would be much appreciated.
jameswstubbs said:
Without going into too much detail as to why, there are tools I have access to which can be used to take a full back up of the entire memory block of the phone when it is in Qualcomm mode.
I cannot access adb on the device to use "adb reboot edl" so I am limited to either trying to activate Qualcomm using a button combination or via fastboot, unless you can advise another way.
Any help or a point in the right direction would be much appreciated.
Click to expand...
Click to collapse
Sounds dodgy to me - sounds like you're trying to access data from a phone that isn't yours so I won't be helping
TheFixItMan said:
Sounds dodgy to me - sounds like your trying to access data from a phone that isn't yours so I won't be helping
Click to expand...
Click to collapse
It's not dodgy, but I fully understand.
Thank you anyway.
try fastboot -i 0x2b4c oem ​​reboot-edl (it's working for LENOVO ZUK Z1 and ZUK Z2)
You can try (if you can/have the TWRP image) to flash TWRP and in reboot options select EDL.
In case the bootloader isn't unlocked you can also use fastboot boot [TWRP image name] to boot directly into TWRP without flashing and then repeat, go into reboot options and select edl.
Not sure if it works for you, if it does let me know that I have helped!
TheFixItMan said:
Sounds dodgy to me - sounds like you're trying to access data from a phone that isn't yours so I won't be helping
Click to expand...
Click to collapse
I need help too. So, I own a Moto G5s plus sanders. I unlocked its bootloader the day I got it. Didn't keep any backup and rooted it. I Also installed dot os based on android 11. But my 4G Volte connection was finicky. So, I decided to use a Volte zip patch. But, anyways I flashed the zip via TWRP and tried to reboot. But the phone didn't turn on after that. After a few minutes to my shock I understood that I hardbricked my mobile. No button combos, nothing worked. Anyways in my desperation I found a YouTube video showing the use of blankflash to revive a phone and lo and behold I used the procedure to again restore my device. It booted to the fastboot interface. But my happiness was short lived. My baseband was unknown at this point and the bootloader was I dunno downgraded to 0.5 inplace of 2.12. But, more importantly the unlock status was lost. I unlocked it again and all went well. I could even flashed TWRP. but then I realised I couldn't upgrade my bootloader. I couldn’t do anything. It's always gives a "security downgrade", "preflash validation failed" and "permission denied" error. I even tried RSA official rescue tool from Lenovo but even it was unsuccessful. It was never unsuccessful before that. Not even with a unlocked bootloader. I researched for days and tried custom ROMs. I flashed stock images. Nothing brought back my baseband and IMEI. When I type "fastboot oem unlock critical" it gives me permission denied error with a message. "Need OEM signed bootloader." I think the blankflash bootloader is the root of all evil. I need to change it and therefore I need to enter the edl mode. I have tried all adb commands and fastboot commands. The phone reboots okay after those commands but never goes into edl mode whatsoever. I am also ready to do a controlled hardbrick of my device to go into the edl mode so that I can use my device again with a proper bootloader and a properly working fastboot. Please help

Unable to restore stock ROM via EDL + MiFlash/QFIL

I've been trying to flash the stock ROM to my older A2 Lite phone, but for some reason I can't get the images flashed at all. The bootloader is locked and can't be unlocked since both recovery and system partitions are glitched, therefore, the only way to get it would be via EDL pinout shorts and using Miflash tool, however the flashing process gets stuck like this when we should be seeing status changing like in this video.
The drivers are apparently fine and the Qualcomm serial port is up and running nicely, I've used versions 2019.12.6.0 and 2020.3.14.0 of MiFlash and these are the images I'm trying to flash either one of them:
Code:
daisy_global_images_V9.6.11.0.ODLMIFF_20181112.0000.00_8.1_8028e3bf1c.tgz
daisy_global_images_V10.0.3.0.PDLMIXM_20190114.0000.00_9.0_e8d8d4a6d0.tgz
daisy_global_images_V11.0.7.0.QDLMIXM_20200617.0000.00_10.0_7d0ffb82ac.tgz
As a last resort I've tried QFIL v2.0.2.3 but it is also failing to switch to EDL an returning logs "Failed to Switch to Emergency Download mode" and "Fail to find QDLoader port after switch". Drivers have been re-installed multiple times and PC been rebooted quite a few times too. Anyways, literally ran out of tricks and any help would be greatly appreciated.
Here's the phone getvar output for reference.

OP7T OTA Update caused bootloop. How do you backup data in EDL mode?

Hi, thanks for helping me improve this process before I try it on my phone.
Model: OnePlus 7t HD1907 US Version
Situation: Had my OnePlus 7T auto-update to Android 12, causing a bootloop (1+ Logo -> T-Mobile - phone is unlocked). After about an hour, the phone switched slots to Qualcomm boot and Recovery mode. The phone and OnePlus support suggest I just factory reset, and wipe years of precious data. I had a google photos auto backup but there are plenty more things I need on this phone. So I'm looking into doing a backup first.
Note that I understand the risks with these processes, and I'm looking to minimize them by having the most accurate process down.
What I tried:
I tried adb pull, the phone isn't recognized, regardless of drivers
Fastboot TWRP: Phone is recognized and fastboot works to reboot, but not to boot into TWRP because the phone's bootloader is locked. `Fastboot OEM unlock` also fails.
What I'm trying to do now, and please help me tune it/improve it:
Use Qualcomm HS-USB QDLoader 9008 drivers for the connected phone and get QPST tool.
Try to boot the 7T into EDL mode (still have to figure this out)
In Device Manager, check if "Qualcomm HS-USB QDLoader 9008" is under "Ports (COM & LPT)".
On QPST Configuration, click on the "Ports" tab, then "Add New Port" and enter the corresponding COM port number.
Click on "Start Clients" tab and got to Back Up.
Set the backup options, start it and wait for the img to download.
After this I plan to use to whatever best tool to extract the img and access the files, then go ahead with the factory reset.
Can you help me make this process more clear and precise for my specific phone? Thanks.
You posted in the wrong section but try https://forum.xda-developers.com/t/...l-to-restore-your-device-to-oxygenos.4004005/
kjullian19 said:
Hi, thanks for helping me improve this process before I try it on my phone.
Model: OnePlus 7t HD1907 US Version
Situation: Had my OnePlus 7T auto-update to Android 12, causing a bootloop (1+ Logo -> T-Mobile - phone is unlocked). After about an hour, the phone switched slots to Qualcomm boot and Recovery mode. The phone and OnePlus support suggest I just factory reset, and wipe years of precious data. I had a google photos auto backup but there are plenty more things I need on this phone. So I'm looking into doing a backup first.
Note that I understand the risks with these processes, and I'm looking to minimize them by having the most accurate process down.
What I tried:
I tried adb pull, the phone isn't recognized, regardless of drivers
Fastboot TWRP: Phone is recognized and fastboot works to reboot, but not to boot into TWRP because the phone's bootloader is locked. `Fastboot OEM unlock` also fails.
What I'm trying to do now, and please help me tune it/improve it:
Use Qualcomm HS-USB QDLoader 9008 drivers for the connected phone and get QPST tool.
Try to boot the 7T into EDL mode (still have to figure this out)
In Device Manager, check if "Qualcomm HS-USB QDLoader 9008" is under "Ports (COM & LPT)".
On QPST Configuration, click on the "Ports" tab, then "Add New Port" and enter the corresponding COM port number.
Click on "Start Clients" tab and got to Back Up.
Set the backup options, start it and wait for the img to download.
After this I plan to use to whatever best tool to extract the img and access the files, then go ahead with the factory reset.
Can you help me make this process more clear and precise for my specific phone? Thanks.
Click to expand...
Click to collapse
Did you manage to save the data and boot the phone again ?

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