COOL1 BRICKED QUALCOMM HS-USB Diagnostic 900E

realblackyz · May 20, 2018

After using my cool1 for a month with no problems i decided to flash JUI 7.0.1 (with gapps etc...) on my Cool1 via TWRP but after doing it i realized it has many bugs and apps doesn't work properly. So i decided to return to EUI. After flashing the original stock firmware and rebooting the phone automatically switched off.
Power button not working, i cannot get into recovery and i tried all combinations of buttons without success.
When i connect it to the computer the red led start glowing and my computer recognizes it ONLY in Device Manager as QUALCOMM HS-USB Diagnostic 900E (COM3).
i have all the latest drivers installed.

i tried QFIL and it also recognizes it as QUALCOMM HS-USB Diagnostic 900E (COM3) and after setting everything when i click "Download" i get this error:

Start Download
COM Port number:3
Switch To EDL
Download Fail:Switch To EDL FailFailed to Switch to Emergency Download mode
Finish Download

MiFlash doesn't recognize the phone so nothing to do
Coolpad Download Assistant doesn't recognize the phone.
YGDP not working

to flash a new rom i need the phone to go into QUALCOMM HS-USB QDLOADER 9008 MODE but i tried everything installed the latest drivers even bought a 10$ EDL CABLE from amazon still not working always show me QUALCOMM HS-USB Diagnostic 900E

Any suggestion that would help, please... I think it's hard bricked because it cannot get into recovery nor the fastboot mode. completely dead only Red led glowing and QUALCOMM HS-USB Diagnostic 900E (COM3).

Thank you

mymosi@12 · May 24, 2018

hi
i installed custom recovery to cool 1 c 103
after it finished model number changed to 106
what i have to do?????

realblackyz · May 26, 2018

So nobody could help?

Bogdanm997 · Jun 6, 2018

hello. probably you wipe system. .. or i dont know..but try this:
Forced writing a recovery mod using QFIL.exe:
a) open program qfil.exe
b) choose the recovery folder and xml file
(remember: for writing succes recovery you need type this command in cmd: BCDEDIT.EXE –SET TESTSIGNING OFF)
c) plug the phone
d) now. most important: Hold Volume up , Volume Down and Power Button At same time. and - always press the button
if not working : first d) and then c) steps.
if the qfil.exe read the phone hold continues button.
e) press download button on qfil.exe

Now in this moment you have a recovery mod.
This method it worked for me

So now you need a flash a rom.
I dont understand why after flash some room(miui 8, 9, etc) my phone did not open..
maybe some rom dont have a kernel
so.. i flash the jui 7 by cuoco and my phone its a live ()
now you can try flash now room (I'm not sure if it will work as I did not try)
1. wipe data and cache
2) flash new rom

edit: dont work flash any rom after flashed jiui..i dont know why......

Edit2: for change jui to eui watch this:
https://youtu.be/oPB1izX4Plo
Good luck:good:

silentzer14 · Jun 7, 2018

Bogdanm997 said:
hello. probably you wipe system. .. or i dont know..but try this:
Forced writing a recovery mod using QFIL.exe:
a) open program qfil.exe
b) choose the recovery folder and xml file
(remember: for writing succes recovery you need type this command in cmd: BCDEDIT.EXE –SET TESTSIGNING OFF)
c) plug the phone
d) now. most important: Hold Volume up , Volume Down and Power Button At same time. and - always press the button
if not working : first d) and then c) steps.
if the qfil.exe read the phone hold continues button.
e) press download button on qfil.exe

Now in this moment you have a recovery mod.
This method it worked for me

So now you need a flash a rom.
I dont understand why after flash some room(miui 8, 9, etc) my phone did not open..
maybe some rom dont have a kernel
so.. i flash the jui 7 by cuoco and my phone its a live ()
now you can try flash now room (I'm not sure if it will work as I did not try)
1. wipe data and cache
2) flash new rom

edit: dont work flash any rom after flashed jiui..i dont know why......
Good luck:good:

I've flashed the recovery mode but my phone is not opening can you help me ? :crying:

Bogdanm997 · Jun 7, 2018

silentzer14 said:
I've flashed the recovery mode but my phone is not opening can you help me ? :crying:

Edit 3: To change EUI to JUI or viceversa You need use Coolpad download assistant

I found a video yt, link bellow.
Hi, but recovery mod is working? Press Vol up + Power Button to Enter in recovery.
If recovery work, You can flash a rom . Jui or eui.
More details please and i try to help You.
Edit:
Or write rom with coolpad download assistant:
https://youtu.be/oPB1izX4Plo
After You can install recovery
Edit2: I recomanded install trwp 3.1.x.x by @Cuoco92
And then You can Root the phone. (Install magisk or SuperSU from recovery)

silentzer14 · Jun 7, 2018

Bogdanm997 said:
Edit 3: To change EUI to JUI or viceversa You need use Coolpad download assistant

I found a video yt, link bellow.
Hi, but recovery mod is working? Press Vol up + Power Button to Enter in recovery.
If recovery work, You can flash a rom . Jui or eui.
More details please and i try to help You.
Edit:
Or write rom with coolpad download assistant:
https://youtu.be/oPB1izX4Plo
After You can install recovery
Edit2: I recomanded install trwp 3.1.x.x by @Cuoco92
And then You can Root the phone. (Install magisk or SuperSU from recovery)

I have fixed the device but the only problem now is I don't have any signal. Simcards are detected but no Network at ALL, I tried to Fix my IMEI but still the same, do you know how to fix it ?

I also tried to reflash the rom through TWRP still the same -_-

silentzer14 · Jun 8, 2018

realblackyz said:
After using my cool1 for a month with no problems i decided to flash JUI 7.0.1 (with gapps etc...) on my Cool1 via TWRP but after doing it i realized it has many bugs and apps doesn't work properly. So i decided to return to EUI. After flashing the original stock firmware and rebooting the phone automatically switched off.
Power button not working, i cannot get into recovery and i tried all combinations of buttons without success.
When i connect it to the computer the red led start glowing and my computer recognizes it ONLY in Device Manager as QUALCOMM HS-USB Diagnostic 900E (COM3).
i have all the latest drivers installed.

i tried QFIL and it also recognizes it as QUALCOMM HS-USB Diagnostic 900E (COM3) and after setting everything when i click "Download" i get this error:

MiFlash doesn't recognize the phone so nothing to do
Coolpad Download Assistant doesn't recognize the phone.
YGDP not working

to flash a new rom i need the phone to go into QUALCOMM HS-USB QDLOADER 9008 MODE but i tried everything installed the latest drivers even bought a 10$ EDL CABLE from amazon still not working always show me QUALCOMM HS-USB Diagnostic 900E

Any suggestion that would help, please... I think it's hard bricked because it cannot get into recovery nor the fastboot mode. completely dead only Red led glowing and QUALCOMM HS-USB Diagnostic 900E (COM3).

Thank you

Turn off your phone then
Insert the Cable
Hold "VOLUME UP + DOWN + POWER BUTTON" wait until the 4th beep sound Then try to flash again.

Bogdanm997 · Jun 8, 2018

I didnt get this problem, I dont know exactly how to fix, but try:
https://youtu.be/9mbNvItVg78
https://youtu.be/8QZF_H_JNpA

realblackyz · Jun 8, 2018

silentzer14 said:
Turn off your phone then
Insert the Cable
Hold "VOLUME UP + DOWN + POWER BUTTON" wait until the 4th beep sound Then try to flash again.

Unfortunately it isn't working just tried

dwaipayan774 · Feb 6, 2019

Try Vol Up + Down + Usb Cable , to get into 9008 Mode.

bigdoomzoe · Mar 3, 2019

dwaipayan774 said:
Try Vol Up + Down + Usb Cable , to get into 9008 Mode.

USB cable?sorry What's 9008 mode..

dwaipayan774 · Mar 3, 2019

bigdoomzoe said:
USB cable?sorry What's 9008 mode..

Qualcomm HS- Usb 9008 mode .
Press vol up and down and plug in the usb cable while connected to PC.

bigdoomzoe · Mar 3, 2019

What program is needed for the computer

dwaipayan774 · Mar 3, 2019

bigdoomzoe said:
What program is needed for the computer

---------- Post added at 08:43 AM ---------- Previous post was at 08:42 AM ----------

bigdoomzoe said:
What program is needed for the computer

QFIL or HQXA

bigdoomzoe · Mar 3, 2019

This will unlock my network

Boulfalxd · Mar 5, 2019

I try it but when i do the recovery mode only the red light is working the phone isn't vibrate and nothing so i tried to do it in the YGDP tool and isn't working too are you know anoyher way ?? :crying:

dwaipayan774 · Mar 5, 2019

Boulfalxd said:
I try it but when i do the recovery mode only the red light is working the phone isn't vibrate and nothing so i tried to do it in the YGDP tool and isn't working too are you know anoyher way ?? :crying:

Try QGDP. On my Pc my phone is not detected by YGDP ,but I can flash stock ROM with QGDP.You can flash with QGDP , without even turning on the phone.Add the CPB file in QGDP, click start, and then plug in phone while switched off(no need to press any button)

Boulfalxd · Mar 6, 2019

Man you're my hero ;b

dwaipayan774 · Mar 7, 2019

Boulfalxd said:
Man you're my hero ;b

If you were able to flash Stock ROM,then Congratulations.

COOL1 BRICKED QUALCOMM HS-USB Diagnostic 900E

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