Lg Volt 2 Ls751 HARD BRICK ( Qhsusb bulk _ Qualcomm-9008) - GSM-Forum

alshallal11 · 03-28-2017, 09:18

Hello,

How can I unbrick Lg Volt 2 Ls751 with "qhsusb_bulk"

I have octoplus but I don't know how jtag work!

Thanks advance

Medusa Box · 03-28-2017, 10:05

Hello.

At first You need to connect the device via USB. If connection will be successful (if one of USB loaders in Software will be suitable), try to make Factory Repair using the latest original firmwares for this device.

To connect the phone via USB, try to do the next:
1. Install the latest Medusa Pro Software version (Medusa Box Downloads - Software, Drivers, Manual).
2. Select "USB" option in Software.
3. Select "Brand: Custom Settings".
4. Select "Device (Core): Qualcomm MSM8916".
5. Select "Loader: QLoader_v1".
6. Connect the phone to PC. Install "Qualcomm" driver from the folder "c:\Program Files (x86)\Medusa Pro Software\Driver\QHSUSB\". As a result, "Qualcomm...9008" device should appears in PC Device Manager instead of "qhsusb_bulk" device.
7. Press "Connect" button in Software and wait while device will be connected (or not connected).
8. If device will be connected successfuly, do Factory Repair ("Factory repair" button in Software).

Please note, that loaders can be not suitable (not compatible) for connecting the device. This depends on device CPU bootrom revision. Some devices (the same models) can be connected using loaders from Software and some аrе not connected, for example:
http://forum.gsmhosting.com/vbb/f664...d-usb-2161902/,
http://forum.gsmhosting.com/vbb/f798...table-2162110/.

There are three general USB loaders for Qualcomm MSM8916 in Software. Try to connect the phone using each of them.

alshallal11 · 03-28-2017, 15:33

Quote:

Originally Posted by Medusa Box

Hello.

At first You need to connect the device via USB. If connection will be successful (if one of USB loaders in Software will be suitable), try to make Factory Repair using the latest original firmwares for this device.

To connect the phone via USB, try to do the next:
1. Install the latest Medusa Pro Software version (Medusa Box Downloads - Software, Drivers, Manual).
2. Select "USB" option in Software.
3. Select "Brand: Custom Settings".
4. Select "Device (Core): Qualcomm MSM8916".
5. Select "Loader: QLoader_v1".
6. Connect the phone to PC. Install "Qualcomm" driver from the folder "c:\Program Files (x86)\Medusa Pro Software\Driver\QHSUSB\". As a result, "Qualcomm...9008" device should appears in PC Device Manager instead of "qhsusb_bulk" device.
7. Press "Connect" button in Software and wait while device will be connected (or not connected).
8. If device will be connected successfuly, do Factory Repair ("Factory repair" button in Software).

Please note, that loaders can be not suitable (not compatible) for connecting the device. This depends on device CPU bootrom revision. Some devices (the same models) can be connected using loaders from Software and some аrе not connected, for example:
http://forum.gsmhosting.com/vbb/f664...d-usb-2161902/,
http://forum.gsmhosting.com/vbb/f798...table-2162110/.

There are three general USB loaders for Qualcomm MSM8916 in Software. Try to connect the phone using each of them.

will ls991 work with ls751??

Medusa Box · 03-28-2017, 15:45

No, LS991 is based on MSM8992 CPU, but LS751 is based on MSM8916 CPU. To connect LS751 perform steps 1-9 and post the result. Try to connect the phone using "QLoader_v1", "QLoader_v2" and "QLoader_v1" USB loaders for MSM8916.

alshallal11 · 03-28-2017, 15:55

Quote:

Originally Posted by Medusa Box

No, LS991 is based on MSM8992 CPU, but LS751 is based on MSM8916 CPU. To connect LS751 perform steps 1-9 and post the result. Try to connect the phone using "QLoader_v1", "QLoader_v2" and "QLoader_v1" USB loaders for MSM8916.

Thanks.. I'm using Octoplus Pro JTAG Software and it give me Sending loader... Failed. please help me

Medusa Box · 03-28-2017, 16:10

Quote:

Sending loader... Failed.

This error means, that USB loader, which You have used for connecting is not compatible with your device. As I have written above, try to connect the phone using other two loaders. If these two loaders are also not compatible, unfortunately, currently we have no solution on how to connect and repair your phone.

alshallal11 · 03-28-2017, 16:26

Quote:

Originally Posted by Medusa Box

This error means, that USB loader, which You have used for connecting is not compatible with your device. As I have written above, try to connect the phone using other two loaders. If these two loaders are also not compatible, unfortunately, currently we have no solution on how to connect and repair your phone.

I tried 3 loaders MSM8916 and not working,, i want to repair it with eMMC but i dont know how

Medusa Box · 03-28-2017, 17:52

Unfortunately, we have no eMMC pinout for this device at the moment. Maybe someone has pinout picture for this phone and he will upload it here for You.

alshallal11 · 03-28-2017, 18:07

Quote:

Originally Posted by Medusa Box

Unfortunately, we have no eMMC pinout for this device at the moment. Maybe someone has pinout picture for this phone and he will upload it here for You.

Thanks,, I'm waiting

alshallal11 · 03-30-2017, 09:08

I need JTAG points for Lg Ls751, maybe someone have, please post here.

03-28-2017, 09:18	#1 (permalink)
alshallal11 Freak Poster Join Date: Sep 2011 Posts: 269 Member: 1663240 Status: Offline Sonork: 505020 Thanks Meter: 12	Lg Volt 2 Ls751 HARD BRICK ( Qhsusb bulk _ Qualcomm-9008) Hello, How can I unbrick Lg Volt 2 Ls751 with "qhsusb_bulk" I have octoplus but I don't know how jtag work! Thanks advance

03-30-2017, 09:08	#10 (permalink)
alshallal11 Freak Poster Join Date: Sep 2011 Posts: 269 Member: 1663240 Status: Offline Sonork: 505020 Thanks Meter: 12	I need JTAG points for Lg Ls751, maybe someone have, please post here. Last edited by Octopus box; 03-31-2017 at 06:42.

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03-28-2017, 10:05	#2 (permalink)
Medusa Box Product Supporter Join Date: Mar 2011 Location: Octopus-team Posts: 9,360 Member: 1538383 Status: Offline Sonork: 100.1587278 Thanks Meter: 3,397	Hello. At first You need to connect the device via USB. If connection will be successful (if one of USB loaders in Software will be suitable), try to make Factory Repair using the latest original firmwares for this device. To connect the phone via USB, try to do the next: 1. Install the latest Medusa Pro Software version (Medusa Box Downloads - Software, Drivers, Manual). 2. Select "USB" option in Software. 3. Select "Brand: Custom Settings". 4. Select "Device (Core): Qualcomm MSM8916". 5. Select "Loader: QLoader_v1". 6. Connect the phone to PC. Install "Qualcomm" driver from the folder "c:\Program Files (x86)\Medusa Pro Software\Driver\QHSUSB\". As a result, "Qualcomm...9008" device should appears in PC Device Manager instead of "qhsusb_bulk" device. 7. Press "Connect" button in Software and wait while device will be connected (or not connected). 8. If device will be connected successfuly, do Factory Repair ("Factory repair" button in Software). Please note, that loaders can be not suitable (not compatible) for connecting the device. This depends on device CPU bootrom revision. Some devices (the same models) can be connected using loaders from Software and some аrе not connected, for example: http://forum.gsmhosting.com/vbb/f664...d-usb-2161902/, http://forum.gsmhosting.com/vbb/f798...table-2162110/. There are three general USB loaders for Qualcomm MSM8916 in Software. Try to connect the phone using each of them.

03-28-2017, 15:45	#4 (permalink)
Medusa Box Product Supporter Join Date: Mar 2011 Location: Octopus-team Posts: 9,360 Member: 1538383 Status: Offline Sonork: 100.1587278 Thanks Meter: 3,397	No, LS991 is based on MSM8992 CPU, but LS751 is based on MSM8916 CPU. To connect LS751 perform steps 1-9 and post the result. Try to connect the phone using "QLoader_v1", "QLoader_v2" and "QLoader_v1" USB loaders for MSM8916.

03-28-2017, 17:52	#8 (permalink)
Medusa Box Product Supporter Join Date: Mar 2011 Location: Octopus-team Posts: 9,360 Member: 1538383 Status: Offline Sonork: 100.1587278 Thanks Meter: 3,397	Unfortunately, we have no eMMC pinout for this device at the moment. Maybe someone has pinout picture for this phone and he will upload it here for You.