Database Develop

Xiaomi Mi A2 (m1804d2sg) bricked

I just received this smartphone from a friend of mine.
The smartphone is locked on the "androidone" logo.
In the past I fiddled with different andorid devices but with xiaomi I am really puzzled, I don't know how to move.
I tried to enter recovery mode, pressing "vol +" and "power" without a positive result.
I can get into fastboot mode and try to flash the rom with miflasher but I get an error: can not file all.bat.
How can I solve it?

Is your bootloader unlocked?

first unlock bootloader (critical too) then try to flash original stock rom with miflash. Dont try to downgrade android version idk you know it or not but A2 has antiroolback projection which if you downgrade your android version (ex: 9.0 to 8.0) device will delete your phones IMEI code. And the only way of fix that is change main board.

Maharram said:
first unlock bootloader (critical too) then try to flash original stock rom with miflash. Dont try to downgrade android version idk you know it or not but A2 has antiroolback projection which if you downgrade your android version (ex: 9.0 to 8.0) device will delete your phones IMEI code. And the only way of fix that is change main board.
Click to expand...
Click to collapse
thanks for replay.
I tried to unlock the bootloader with adb commands but the console returns an error.
I remind you that the phone does not start.

cicci0 said:
thanks for replay.
I tried to unlock the bootloader with adb commands but the console returns an error.
I remind you that the phone does not start.
Click to expand...
Click to collapse
You must boot to phone and check oem Unlocking at developer options first. You said u can't enter recovery, at mi a2 is little bit tricky, you keep power and volume + buttons until restart and enters a black screen and after u push 1 time (without keeping buttons) power and volume + button again and it enters at recovery

vagsvag said:
You must boot to phone and check oem Unlocking at developer options first. You said u can't enter recovery, at mi a2 is little bit tricky, you keep power and volume + buttons until restart and enters a black screen and after u push 1 time (without keeping buttons) power and volume + button again and it enters at recovery
Click to expand...
Click to collapse
Arrivo alla schermata nera, ma poi non entra in recovery, premo i tasti ma non va.
I get to the black screen, but then it doesn't go into recovery, I press the keys but it doesn't work.

cicci0 said:
Arrivo alla schermata nera, ma poi non entra in recovery, premo i tasti ma non va.
I get to the black screen, but then it doesn't go into recovery, I press the keys but it doesn't work.
Click to expand...
Click to collapse
Power first volume +after, it is little bit tricky but try again it is working. Also if you can't find the compo try this at black screen hold power button and push once volume +

vagsvag said:
Power first volume +after, it is little bit tricky but try again it is working. Also if you can't find the compo try this at black screen hold power button and push once volume +
Click to expand...
Click to collapse
I have seen many videos on youtube and I realize that the system is compromised.
Recovery mode is impossible to start. Following all the steps I get only a black screen and the recovery does not start.
My question is: Can't I install the firmware via fastboot?
I saw some videos showing a jumper to send the phone to QUALCOMM mode.
Can I flash in this mode having the bootloader blocked?

cicci0 said:
I have seen many videos on youtube and I realize that the system is compromised.
Recovery mode is impossible to start. Following all the steps I get only a black screen and the recovery does not start.
My question is: Can't I install the firmware via fastboot?
I saw some videos showing a jumper to send the phone to QUALCOMM mode.
Can I flash in this mode having the bootloader blocked?
Click to expand...
Click to collapse
I can't enter to TWRP recovery u right there is a problem with some Mi A2 devices.
Qualcomm mode is EDL (Qualcomm emergency downloader) and no u can't install firmware or any other thing with bootloader locked. I have googled the enabling oem unlock via fastboot but thats too hard and complicated thing u need to know a lot of things about Android system files, fastboot and .java files to enable it if there is a someone can try to find how to do it and give us a tutorial about that that will be great because thats important thing cuz we can get boot loop with system updates .
Here is the screenshot of the enabling oem unlock via fastboot

cicci0 said:
I have seen many videos on youtube and I realize that the system is compromised.
Recovery mode is impossible to start. Following all the steps I get only a black screen and the recovery does not start.
My question is: Can't I install the firmware via fastboot?
I saw some videos showing a jumper to send the phone to QUALCOMM mode.
Can I flash in this mode having the bootloader blocked?
Click to expand...
Click to collapse
I haven't try this but I think you can do that. There are many persons here at forum that they have used this. Search them threads before u start to see exactly how you do this (I think it is time limited the edl mode via jumper)
Here is a similar situation, read the last messages, there is also a video tutorial.
https://forum.xda-developers.com/mi-a2/help/mi-a2-bricked-bootloop-solution-edl-t3911466

Solved !
I have solved with qualcomm mode.

Please give me some details about solution
cicci0 said:
I have solved with qualcomm mode.
Click to expand...
Click to collapse
which version of MiFlashTool You use. 2018 or 2016??
and which rom package you use. can you send links. oreo / pie ??
I have stuck android one logo after flashing 8.1 or 9.0 flashtool 2016.04.01(64bit) didnt open system
I do EDL mode with two pin shortcut. but rom not open anymore.

V40 on startup: "Your device has failed a routine safety check and will not boot."

V40 on startup: "Your device has failed a routine safety check and will not boot."
I was following this guide to try to flash a US firmware on my bootloader-unlocked Sprint V40: https://forum.xda-developers.com/lg-v40/how-to/guide-make-lg-v40-compatible-lgup-t3953120
After issuing the command "fastboot.exe set_active a" then powering off and trying to enter download mode, I get "Your device has failed a routine safety check and will not boot."
It briefly goes into download mode after that (for just a few seconds). Then I get a green screen with black text that says "LGE Crash Handler : FIQ : NOC Error!" and has a whole lot of other diagnostic info.

my one says all slots are unbootable

imekul said:
I was following this guide to try to flash a US firmware on my bootloader-unlocked Sprint V40: https://forum.xda-developers.com/lg-v40/how-to/guide-make-lg-v40-compatible-lgup-t3953120
After issuing the command "fastboot.exe set_active a" then powering off and trying to enter download mode, I get "Your device has failed a routine safety check and will not boot."
It briefly goes into download mode after that (for just a few seconds). Then I get a green screen with black text that says "LGE Crash Handler : FIQ : NOC Error!" and has a whole lot of other diagnostic info.
Click to expand...
Click to collapse
You have to restore your software again and re-root

Hold Volume+ and plug the phone to your PC to get it into download mode. Use LGUP to reflash the firmware.

Hi, I have a similar problem. after I give the command "fastboot oem unlock" to unlock, I tried to start in download mode and the same message appeared, if I restart the phone or let it restart by itself, it goes into fastboot mode, can anyone help me?
my phone is a lg g7 thinq

zMarkTM said:
Hi, I have a similar problem. after I give the command "fastboot oem unlock" to unlock, I tried to start in download mode and the same message appeared, if I restart the phone or let it restart by itself, it goes into fastboot mode, can anyone help me?
my phone is a lg g7 thinq
Click to expand...
Click to collapse
I too have this problem, i can get it into fastboot mode, and the other mode with the blank screen maybe its 9008 mode (EDL Mode) i do have an EDL cable would that help with anything?
When i press Vol + and insert cable from phone being off it doesnt go into downlaod mode only back to boot loader mode, not into download mode
Its funny its a LG G7, but its showing LM-V350EMW

update, i just manage to OEM unlock the device.
Will keep persisting

still cant get into download mode, it flashes up once i turn off phone, press vol+ and insert cable i see the image of download mode then straight into fastboot it goes

Need help to relock the Razer Phone 2 bootloader.

Hi, Im kinda new to this bootloader thingy. What happen is, i updated the razer phone 2 to Pie, but notice wifi and sim card cant be detect. Even factory reset fails. So i thought of flashing new image on it. KINDA easy on my oneplus, but im not sure where I gone wrong on this razer phone 2, i accidentally unlock the bootloader. NOW the problem is HOW to relock it back? i been follow all youtube and guides all over the place but still fails.
The state of device atm, cannot be boot into Download Mode. Everytime I plug in usb c from Windows, it will boot into unlock bootloader warning page, and continue boot into the homescreen. testing the adbtools, fastboot also to no avail. Can anyone help and guide me how to relocking it back? Maybe i type wrongly on cmd or maybe other android steps not similar to razer one etc....:crying:help much appreciated.

Hold volume down while turning on. Then fastboot flashing lock.

the stock usb doesnt send things correctly in BL mode, https://www.amazon.com/Blackweb-3-Foot-Charge-Cable-Connector/dp/B07SG7P3KZ/ worked for me. with the correct usb cable you should be able to perform the lock commands correctly. can you give us more detail of what you tried on this phone so we know if we need to provide you additional information?

https://developer.razer.com/razer-phone-dev-tools/general-instructions/
"Locking the Bootloader
Locking the bootloader is recommended for security reasons. Some applications will not work with an unlocked bootloader.
Start the Phone in Download Mode with one of the following methods:
Using the adb tool: With the Phone powered on, execute: adb reboot bootloader Enter Download Mode:
Plug in a USB cable to connect your Razer Phone to your computer, Power Off the Phone, then turn it on and immediately press and hold the Volume Down button until “Download Mode” appears on screen.
Lock the critical partitions of the Bootloader first by running this command: fastboot flashing lock_critical
Your Razer Phone will show you a confirmation screen. Use the Volume Up/Volume Down buttons for navigation, and press the Power button to select. Your Phone will reboot."

I can't seem to enter download mode. All I have is fastboot mode and the option to either reboot, close the phone or enter recovery mode. I would really like to lock the bootloader, but I can't seem to be able to detect my phone on my PC even though I installed the fastboot driver.

The_Vinlander said:
I can't seem to enter download mode. All I have is fastboot mode and the option to either reboot, close the phone or enter recovery mode. I would really like to lock the bootloader, but I can't seem to be able to detect my phone on my PC even though I installed the fastboot driver.
Click to expand...
Click to collapse
You must use a USB 2.0 port. The RP2 isn't detected by fastboot when connected to a 3/3.1 port.

Reznor7 said:
You must use a USB 2.0 port. The RP2 isn't detected by fastboot when connected to a 3/3.1 port.
Click to expand...
Click to collapse
I tried this, but to no avail. I tried with 2 cables I had and it keeps telling me < waiting for device > when I enter this command; fastboot flashing lock_critical

The_Vinlander said:
I tried this, but to no avail. I tried with 2 cables I had and it keeps telling me < waiting for device > when I enter this command; fastboot flashing lock_critical
Click to expand...
Click to collapse
You need to go into your device manager and select [ android bootloader interface ] while in fastboot

edl mode 9008 v40 very easy

(french) hello
I could not start in edl mode with the xda instructions but I found a videos
phone on android, connected to the computer by usb. you keep pressing the power button and the volume down button.
when the screen goes black immediately you strafe the volume + button for 2 sec.
the secret is the windows song if the phone is on. when you hear windows song strafe the volume +. i know I did it with my phone off and my phone on quite a few times
normally your computer will recognize the phone in the correct mode. if there is a problem do not forget to install these drivers and restart the computer as it will stay in edl mode and will be well supported.
QDLoader HS-USB Driver_64bit_Setup
MediaFire is a simple to use free service that lets you put all your photos, documents, music, and video in a single place so you can access them anywhere and share them everywhere.
www.mediafire.com
that's funny visibbly before you unlock or reflash the original bootloader the phone don't have fastboot mode with me. but fastboot don't work well in windows. it work erfectly on linux ubuntu with me at exemple.
thanks for your attention

yeah, it is very easy

So this is how you go into fastboot ?
I have the V405 EBW & I am unable to go to fastboot to get the device ID.

Doush_504 said:
So this is how you go into fastboot ?
I have the V405 EBW & I am unable to go to fastboot to get the device ID.
Click to expand...
Click to collapse
no no we should not confuse.
there is download mode in originale lg phone for flash stock roms
there is "edl mode" for unlock bootloader
there is fastboot mode when you unlock the bootloader with this screen.
a tips. root first your phone. 2 backup your firmware. 3 flash twrp. i had problem because i don't do this. there is stock firmware already rooted. its easily.

bsteph27 said:
no no we should not confuse.
there is download mode in originale lg phone for flash stock roms
there is "edl mode" for unlock bootloader
there is fastboot mode when you unlock the bootloader with this screen.
a tips. root first your phone. 2 backup your firmware. 3 flash twrp. i had problem because i don't do this. there is stock firmware already rooted. its easily.
Click to expand...
Click to collapse
Unfortunately, I am unable to root because I am unable to unlock the bootloader (because I can't go to fastboot to get Device ID & send it to LG)

Doush_504 said:
Unfortunately, I am unable to root because I am unable to unlock the bootloader (because I can't go to fastboot to get Device ID & send it to LG)
Click to expand...
Click to collapse
But you can get to fastboot, just not the way you read on the internet.
The device doesn't have fastboot available, until, you put it in edl mode and use qfil to flash the 'engineering' abl. That's what gives you fastboot.
You could, at that point, use fastboot to get the info for unlock.bin. But why? because at that point you can just type 'fastboot oem unlock', and it's unlocked.

AsItLies said:
But you can get to fastboot, just not the way you read on the internet.
The device doesn't have fastboot available, until, you put it in edl mode and use qfil to flash the 'engineering' abl. That's what gives you fastboot.
You could, at that point, use fastboot to get the info for unlock.bin. But why? because at that point you can just type 'fastboot oem unlock', and it's unlocked.
Click to expand...
Click to collapse
beware to put your phone in android oreo before the unlock...... i forget this detail. and i try to unbrick my phone with testpoint. maybe i do a howto if i succes to fix my phone.

AsItLies said:
But you can get to fastboot, just not the way you read on the internet.
The device doesn't have fastboot available, until, you put it in edl mode and use qfil to flash the 'engineering' abl. That's what gives you fastboot.
You could, at that point, use fastboot to get the info for unlock.bin. But why? because at that point you can just type 'fastboot oem unlock', and it's unlocked.
Click to expand...
Click to collapse
Oh OK
I'll have to read more about that.
Thank you

bsteph27 said:
beware to put your phone in android oreo before the unlock...... i forget this detail. and i try to unbrick my phone with testpoint. maybe i do a howto if i succes to fix my phone.
Click to expand...
Click to collapse
Unlock only works with Oreo ??
I have Pie
How do I downgrade without root ?
Is it possible ?

If I can flash a firmware without root
I'd be more than happy to flash a custom rom which has LG's apps instead of Google annoying ones.

Doush_504 said:
Unlock only works with Oreo ??
I have Pie
How do I downgrade without root ?
Is it possible ?
Click to expand...
Click to collapse
you are like me your phone is "bricked". your phone don't have download mode, fastboot mode. maybe you have
edl mode 9008. but often you have to open your phone for put it in edl mode.​wait my howto i hope fix mine today or tomorow and i wil do an howto to unbrick lg v40. is not very hard to solve it but it must a howto.

Question Blackscreen loop booting

Hi,
I'm stuck with my phone: it still loopbooting every 5seconds, black screen, only retrolight.
Bootloader is unlocked. I wanted to install twrp, but fastboot says partition recovery not existing.
After reboot, i'm stuck with this mod.
Try to press volume - to go again in fastboot : phone is detected by computer, then disconnected because it's rebooting.
Do you have a solution to try for me?
Or what are EDL point? I've tried to make an ELD cable but did not work either.

How long is your bootloader keeps active? If it's about 5 - 10 seconds, you can try paste the command to flash stock recovery. I attached it if it's possible to do so (from the latest global). And by the way - THERE IS STILL NO ANY CUSTOM RECOVERY for our device, sadly. Actually there is some, but only mouse works.
The commands to paste:
fastboot flash boot twrp.img

KastenTop said:
twrp.img
Click to expand...
Click to collapse
Boot.img in this case, doesn't make much difference

Sorry but my bootloader don't stay active long enough. I just ear usb detection from PC , then one seconde later, usb disconnection sound.
Phone is still loop booting.

Can you try then pasting "fastboot oem edl" (emergency download mode). The screen should turn black

After that flash with Xiaomi Flash tool

I'm unable to enter in FastBoot mode.
Phone booting black, and every 5 seconds , reboot.
If i push "volume down " button, i hear it vibrate, but nothing. Reboot and not detected by fastboot.exe
I think i have, with all manipulation , relocked the bootloader.
My only way, will to find a way to boot in EDL mode.

Test points, which are unknown so far. You have to disassemble the phone, tho. And you can try to find these points yourself, at your own risk obviously. If you will succeed, pls tell me. We need to know the test points.

I was exactly in same trouble, use This guide that solve the issue.
How to use MTK Bypass to backup or flash secure boot MTK
This is a step by step guide showing how to flash or backup a Mediatek (MTK) secure boot device without using a custom download agent (DA). This tool disables the SLA / DAA bootrom protection A little
forum.hovatek.com
Press mobile three buttons and connect cable to pc to enter brom mode. Because mtk models don't have test point. So don't need to open mobile.

proxynet said:
I'm unable to enter in FastBoot mode.
Phone booting black, and every 5 seconds , reboot.
If i push "volume down " button, i hear it vibrate, but nothing. Reboot and not detected by fastboot.exe
I think i have, with all manipulation , relocked the bootloader.
My only way, will to find a way to boot in EDL mode.
Click to expand...
Click to collapse
EDL mode in Xiaomi mediatek are called BROM mode. Don't need to disarm the mobile.

Thanks !

I tried, it works like a charm !
You're the best man

Zaiserr2 said:
EDL mode in Xiaomi mediatek are called BROM mode. Don't need to disarm the mobile.
Click to expand...
Click to collapse
nice tip!!!! this is a very helpfull guide for solve hard brick on mtk devices. i have decided never modding this phone, excep root when i need a full backup with migrate. because is much mure complicated than snapdragons. but your post is very very helpfull for who want to try anyway