Related
Hi XDA,
so basically i bought a Velocity Cruz T301 recently and followed the known procedures for rooting, flashing ClockworkMod Recovery and custom rom (SJHill Rom v0.3).
before the full brick my device was at ClockworkMod 5 and rooted with SJHill Rom v0.3.
i installed CWM by flashing the zip in stock recovery, then succesfully rooted the device, finally wiped and flashed my custom rom
after major dissapointment in this tablets performance i decided i wanted to get rid of it.
So i downloaded the stock rom, wipe and flashed it onto the tablet...
the tablet turned off when it was finished (i think it was attempting to reboot) and never turned back on again...EVER! :good:
i cant even get to recovery
i tried flashing with adb and fastboot but the device is never even presents itselft to the computer.
i found out that you can boot the device into USB boot mode where you hold the "VOL -" (Volume Down) button and press the reset button and while connected to the computer (windows only) a "JZ4760 USB Boot Device" appears.
i did some googling and also found out that the T301 is based on similar tech to a bunch of tablets and they can all be modified by some software released by Ingenic called USBBootTool.exe
the tool is written in chinese and i cant decypher it all, though i found out how to use it based on its usage for other Ingenic based tablets
1.) you will need to disable driver signature verification (press F8 on boot of windows and toggle the setting, i hate rebooting too but it has to be done)
2.) boot your tablet into USB Boot Mode (hold down Vol - and press Reset button)
3.) install the driver for your device (included in the files below)
4.) with the tablet disconnected you would open the USBBootTool.exe
5.) select your tablet in the options and fill each box with the files needed to flash (files included below)
6.) reconnect the tablet while still in USB Boot Mode and the software will flash your device on detection
everything goes fine for me except when i get to the flashing part in the end.
when USBBootTool detects my tablet, it attempts to flash and gives me a stream of errors and never flashes my device.
i dont know what to do at this point. i have provided direct links to all the software im using and also links to where i got them.
any help would be appreciated, thank you to the XDA community in advance
>------------------- DOWNLOADS ------------------------<
USBBootTool.exe / Tablet Drivers (4725 / 4725B / 4740 / 4750 / 4755 / 4760 / 4770)
http://dl.dropbox.com/u/79196608/burn_tools_3.0.16.rar
obtained from - http://forum.xda-developers.com/showthread.php?t=1720621
Velocity Cruz T301 Update.zip (contains the system.img / data.img / mbr-xboot.bin files)
http://www.cruztablet.com/T301update.zip
obtained from - http://www.cruztablet.com/Article_861.php
SJHill Rom v0.3
http://www.androidfilehost.com/?fid=9390362690511176486
obtained from - http://www.slatedroid.com/topic/27583-rom-t301-sjhill-rom-17-feb-2012-download-link-updated/
ClockworkMod 5
http://files.androtab.info/ingenic/cwm/20120514/T301-recovery-signed.zip
obtained from - http://androtab.info/mips/ingenic/clockworkmod/
I have the same situation. I have gone through every menu in the USB Boot tool and to no avail am I able to recover my T100.
gmick is redoing the software because the coding is set up wrong. Once he gets that figured out there should be a fool proof unbricking method that we can follow. He is posting information over on Slate Droid if you want to take a look.
feyerbrand said:
gmick is redoing the software because the coding is set up wrong. Once he gets that figured out there should be a fool proof unbricking method that we can follow. He is posting information over on Slate Droid if you want to take a look.
Click to expand...
Click to collapse
ok post the link to the thread, and ill add it to the first post as a solution if its found to be a working one
JustSayTech said:
ok post the link to the thread, and ill add it to the first post as a solution if its found to be a working one
Click to expand...
Click to collapse
*Cross Post from SlateDroid* (but I can't post the link because XDA won't allow it)
I found out why the USB boot isn't working. Well, more appropriately I know where it fails but not exactly "why".
The USB Boot tool works like this:
1) Send x00 command (Get CPU Info)
2) Device responds with "JZ4760V1"
3) Host sends two binaries, stage1 and stage2. Stage 1 sets up memory stuff, and Stage 2 sets up USB flashing functions.
4) Host checks that the binaries executed by issuing another x00 command (Which serves as an "Are you still there?" function)
5) If the response is good, the host will flash the images, if the response is bad, it will abort.
Our devices are failing at step 4. The linux usb boot tools (xburst-tools) fail in an identical fashion.
I know that the first stage binary transfers and executes fine because if it didn't the device would be limited to 16k. The second stage is 120K and is transferred successfully. Once the second stage "execute" command is sent, the device crashes.
The second stage is also unique to the CPU type. I've used all of the binaries for JZ4760 I could find on the net and when that failed I cross compiled my own binary from source and it still crashed.
At this point I highly doubt I'll ever be able to fix it, and this completely explains why no one could get any usb recovery tool to work while others using similar devices could. I guess our board is modified just enough for ingenic's stock binaries to fail. Without knowing what's changed (getting Velocity Micro's source) we're SOL.
I can open it up again and solder on the serial header but I'm betting it's going to give me some generic "couldn't execute" message that isn't going to help me. I'll probably do this anyway though because I've come this far so what's the loss.
wow, i learned alot from that post, seems like writing a usbboottool-like application that can send the commands but also log and possibly bypass security checks etc but that def would take sometime. thank you for your insight, seems youve come the closest to cracking the case, actually you found the fault, hopefully your methods can eventually bring about a fix
JZ 4770
gmick said:
*Cross Post from SlateDroid* (but I can't post the link because XDA won't allow it)
I found out why the USB boot isn't working. Well, more appropriately I know where it fails but not exactly "why".
The USB Boot tool works like this:
1) Send x00 command (Get CPU Info)
2) Device responds with "JZ4760V1"
3) Host sends two binaries, stage1 and stage2. Stage 1 sets up memory stuff, and Stage 2 sets up USB flashing functions.
4) Host checks that the binaries executed by issuing another x00 command (Which serves as an "Are you still there?" function)
5) If the response is good, the host will flash the images, if the response is bad, it will abort.
Our devices are failing at step 4. The linux usb boot tools (xburst-tools) fail in an identical fashion.
I know that the first stage binary transfers and executes fine because if it didn't the device would be limited to 16k. The second stage is 120K and is transferred successfully. Once the second stage "execute" command is sent, the device crashes.
The second stage is also unique to the CPU type. I've used all of the binaries for JZ4760 I could find on the net and when that failed I cross compiled my own binary from source and it still crashed.
At this point I highly doubt I'll ever be able to fix it, and this completely explains why no one could get any usb recovery tool to work while others using similar devices could. I guess our board is modified just enough for ingenic's stock binaries to fail. Without knowing what's changed (getting Velocity Micro's source) we're SOL.
I can open it up again and solder on the serial header but I'm betting it's going to give me some generic "couldn't execute" message that isn't going to help me. I'll probably do this anyway though because I've come this far so what's the loss.
Click to expand...
Click to collapse
for my JZ4770 Earlier USB tool was flashing .img without any problem but for now it is saying "load cfg failed". "API downlaod failed' like dialogues and doesnt flash anything. Any idea? Thanks in advance!!
First restart your computer (actually restart it) then redownload the USB boot tool and save it in a completely new directory and use a different USB port
Sent from my Pokeball
Yes, I did
JustSayTech said:
First restart your computer (actually restart it) then redownload the USB boot tool and save it in a completely new directory and use a different USB port
Sent from my Pokeball
Click to expand...
Click to collapse
Yes, I tried with this suggestion. Rather I reinstalled xp and the tried again. But the dialogues are same. The history is like this. Was having ICS on JZ 4770. Formatted with usb tool and put JB updates. It was not sensing touch so reflashed another JB updates. Now the tab boots, it reaches to boot logo for around 12 seconds and restarts in stock recovery. While it is in booting stage it get detected by windows and adb also. In stock recovery mode it get detected by windows and in turn by adb also. If I tried to install updates through SD card it shows it had installed and reboots after completion. But again the same way it goes to boot logo and then back to stock JB recovery. It also boots in ingenic boot device mode and gets detected by USB burn tools. But when try to flash any of the ROM it gives the same dialogues "check cfg failed" "api download failed" "boot. fw failed" and cant flash anything.
Is there any tool which can be flashed or a script which can be used from SD card for completely formatting flash memory so that USB burn tool can flash required ROM?
can you flash the stock rom in recovery?
Managed using USB BOOT TOOL for ingenic JZ 4770 board in English
JustSayTech said:
can you flash the stock rom in recovery?
Click to expand...
Click to collapse
thanks man but I managed to boot the device. I used following USB BOOT TOOL for ingenic 4770 boards. The goodness with this tool, this is completely in English. You will know what you are doing. Even after opening the main window of the tool you can right click and then get another options(yes again in English). My problem with this device was bad blocks at 1024. In the options there is chance to force erase whole the nand partitions which I used and erased all the partitions thereby made all the partions available for flashing and readable by the tool. Then from File option selected stock rom files and flashed them. While flashing selected JZ4770 iNanad.ini file in manual configuration. This tool has really helped me to come out of the issue and will be useful for guys using JZ 4770 board.
http://www.4shared.com/rar/m1BUV5r2/USBBurnTool_20120401_for_relea.html
Got USBBootTool.exe kind of working.
1. Download the following file from Ingenic.
ftp * ingenic * cn/3sw/01linux/tmp/jz4770-20110610.rar
2. Download Applocale from Microsoft.
www * microsoft * com/en-us/download/details.aspx?id=13209
3. Extract the jz4770-20110610.rar and find the folder. (Using 7zip should keep the UTF encoding in Chinese)
20110610\04burn\20110524_4770_Programmer
4. Copy the folder 20110524_4770_Programmer to location you want to use it in.
5. Install Microsoft Applocale (Just in case, I don't think it is required)
Now Start Applocale and create a shortcut to USBbootTool.exe inside 20110524_4770_Programmer
中文(简体) is simplified Chinese option and should let you view the GUI correctly.
6. Now with the Applocale Shortcut created for USBbootTool.exe you can start the application with correct fonts.
Now this is where is breaks down.
TABLET-8 NAND FINAL BSP(S3 TEST) will allow you to read from it and write to it, but the CFG is off.
\tool_cfg\tablet-8-nand-final.ini is the configuration for it.
DO NOT CONNECT THE DEVICE WITH ANY OPTIONS CHECKED OR LOAD ANY FILES.
See Attached Images.
Next to the Read button is some Boot Option menu. I am not fulling aware of what this does.
What I need is a someone to help me fix/correct the ini/cfg files in
\20110524_4770_Programmer\tool_cfg\.ini
\20110524_4770_Programmer\4760\
to correctly match the files of the NAND.
Also if anyone has a copy (dd to img) or (cat to img) of the block devices.
That would help a ton.
# cat /proc/partitions
# cat /proc/mtd
I would also love another T10x Tablet for cheap.
I want to start building things like new bootloader, kernel, system image,
performance libraries to take full use of the Ingenic JZ4760 (www * ingenic * cn/product.aspx?CID=11)
I also bring Christmas gifts
2 APKS. You can place them in /system/app or /data/app.
Google Play will crash now and again, but it will load and work. (Vending.apk)
Secondly I bring the gift of performance increase, just by a slight bit.
edit the line of the heapsize in /system/build.prop dalvik.vm.heapsize=96m
Remember to make sure the permissions are set back to 666 or 644.
Original Vending.Apk before updates came from here: (Incase you are paranoid)
code * google * com/p/ics-nexus-s-4g/source/browse/trunk/system/app/Vending.apk?spec=svn20&r=18
ics-nexus-s-4g * googlecode * com/svn-history/r18/trunk/system/app/Vending.apk
To prevent spam on the XDA forums, ALL new users prevented from posting outside links in their messages. After approximately 10 posts, you will be able to post outside links. Thank you for
Click to expand...
Click to collapse
Stupid. how do you expect real people to help post Tech Docs? That is bad Moderating and Administrating.
Make sure to replace the Asterisk's with spaces to normal dots.
Requesting Block Images.
Does anyone have a copy of it they can send me for a T10x?
block images......
IceGryphon said:
Does anyone have a copy of it they can send me for a T10x?
Click to expand...
Click to collapse
Which block images do you want?
...also is there a way to rip the stock images off the jz4760 in the t301.
Such as:
Can i usethe ingenic uboot tool?
Anybody find the jtag pins?
Is the 4 pin conn next 2 the batt for serial?
.......i guess ill try to take a look this weekend
Ics would be really nice, but probably slower than stock..... especially with the limited ram
I unpacked the stock rom. I also unpacked an ics rom for a jz4770, and repo sync'd the aosp and mips 3.0.8 android kernel.
I'm still trying to figure out specs for the processor though. I know that its mips32 - el- fp- r1, but i cannot figur out the dsp version ... if it has one?
Error in erasing nand
nanachitang420 said:
thanks man but I managed to boot the device. I used following USB BOOT TOOL for ingenic 4770 boards. The goodness with this tool, this is completely in English. You will know what you are doing. Even after opening the main window of the tool you can right click and then get another options(yes again in English). My problem with this device was bad blocks at 1024. In the options there is chance to force erase whole the nand partitions which I used and erased all the partitions thereby made all the partions available for flashing and readable by the tool. Then from File option selected stock rom files and flashed them. While flashing selected JZ4770 iNanad.ini file in manual configuration. This tool has really helped me to come out of the issue and will be useful for guys using JZ 4770 board.
http://www.4shared.com/rar/m1BUV5r2/USBBurnTool_20120401_for_relea.html
Click to expand...
Click to collapse
I used english ingenic tool to erase bad blocks but m nt able erase bad blocks live suit is giving eror id=0x4848
Hello Specialists!!
I have an really big problem with my phone: "SM-J700F"
I am not able to connect via odin or kies to this one.
But in windowes explorer (Win7 64bit) everything is visible.
In MTP Mode, Usb-Storage and PTP mode.
Also I can acess to the phone via the explorer.
But not with odin and/or Kies.
I tried to installit several times (Kies also Kies3)
Then I tried another win7 computer, but with same result.
The reason is, i wont to root the phone, because of low memory, even after reseting to factory.
I hope really a lot that there is an solution!!!!
Many greetings
Robert
Additional information odin
Hello experts!!
Some additional information what I found out:
When I connect my Samsung Galaxy S5 Neo, everything is working.
So I compared the used driver for both phone (S5 is OK), (J7 is not) in the device manager of windows.
So below you see the entries when the phone is connected:
S5 Neo - OK:
-Modem: Samsung Mobile USB Modem
-Samsung Android Phone: Samsung Android ADB Interface
-Tragbare Geräte: Galaxy S5 Neo (translated means: carryable device)
-USB Controller: Samsung Mobile USB Composite Device
Same with J700F - Not OK:
- Modem: entity is not existing ---> difference
-Samsung Android Phone: Samsung Android ADB Interface ---> is equal
-Tragbare Geräte: full_tangxun6572_we_I ---> different, is the Name whitch is visible in windows explorer
-USB Controller: USB Verbindungsgerät (translatet: USB Connection Device) ---> different (this Entity is already existing, even when no phone is connected)
So I tried to update exactly this driver with the downloaded one from Samsung. For this I had to use no compactible hardware.
When I select almost all INF driver, the right driver was visible during installation, but it could not start (code 10)
I think this is somehow the problem.
With the driver "USB Verbindungsgerät" on the windows side everything is OK. Copy to phone, explore,...
But I think that Kies and Odin don't find the acces point to the USB samsung device....the bridge to this device.
Maybe there is an possibility go give odin an additional command, where odin connect to the right port (_#0006) and HUB (_#0004) which I see in the USB Verbindungsgerät....
Do you can help me please!!!!
BR and good night
Hook
hook02 said:
Hello experts!!
Some additional information what I found out:
When I connect my Samsung Galaxy S5 Neo, everything is working.
So I compared the used driver for both phone (S5 is OK), (J7 is not) in the device manager of windows.
So below you see the entries when the phone is connected:
S5 Neo - OK:
-Modem: Samsung Mobile USB Modem
-Samsung Android Phone: Samsung Android ADB Interface
-Tragbare Geräte: Galaxy S5 Neo (translated means: carryable device)
-USB Controller: Samsung Mobile USB Composite Device
Same with J700F - Not OK:
- Modem: entity is not existing ---> difference
-Samsung Android Phone: Samsung Android ADB Interface ---> is equal
-Tragbare Geräte: full_tangxun6572_we_I ---> different, is the Name whitch is visible in windows explorer
-USB Controller: USB Verbindungsgerät (translatet: USB Connection Device) ---> different (this Entity is already existing, even when no phone is connected)
So I tried to update exactly this driver with the downloaded one from Samsung. For this I had to use no compactible hardware.
When I select almost all INF driver, the right driver was visible during installation, but it could not start (code 10)
I think this is somehow the problem.
With the driver "USB Verbindungsgerät" on the windows side everything is OK. Copy to phone, explore,...
But I think that Kies and Odin don't find the acces point to the USB samsung device....the bridge to this device.
Maybe there is an possibility go give odin an additional command, where odin connect to the right port (_#0006) and HUB (_#0004) which I see in the USB Verbindungsgerät....
Do you can help me please!!!!
BR and good night
Hook
Click to expand...
Click to collapse
Hello, Please what I should try?
BR
Robert
Try this maybe this would help yah connecting thru odin... settings > developers option > able OEM unlock
---------- Post added at 07:38 AM ---------- Previous post was at 07:33 AM ----------
Rooting J7, download a compatible twrp n superuser zip file on XDA, and place the superuser in yur device, then flash twrp via Odin( wait 2 to 4 minutes then Pass appears n yur phone reboots) then go to recovery mode then install superuser.zip
I don't know - not working at all
Hello!
Thanks for supoort!
Yes, I tried always: developer options on and OEM unlock. (on 2 Computers with win7)
But there is on both no entity below ID:COM in odin.
So there is no nonnection... (also in windows, when phone is normal connected (not via download mode) there is no connection from ODIN and KIES)
Bute another phone Galaxy S5 Neo is working.
Shi.....
Many thanks for support!!!!!!!!!!
BR
Hook
Can anybody support me
Hello
Is any possibility for helping?
BR
Robert
Some News
Hello!
What I found out:
When I use *#0808#
There is SP selected and RNDIS+ACM+DM+ADB
Bit when I select MTP+ADB the other one is not deselected and I cannot continue?
Means with OK - no function and Reboot - no function (then both are selected....!)
Do you can support me here?
BR
Hook
None of the methods in this thread are my own work. I struggled with getting my phone rooted for a long time and spend 10s of hours on the process. I had never rooted before and was therefore unfamiliar with all the terms, unfamiliar with how to complete all the recommended checks to ensure one had the right model, etc. There were several helpful threads but most approach the subject with the assumption that one knows something about the process. In this post I lay out what worked for me in a step-by-step way and what you have to do to achieve my results.
#1 Ensure you have a H-901 motherboard and not the Korean F600 motherboard by checking the sticker, and checking “About Phone” -> “Hardware Info” -> “Model number” in settings. These must both be LG-H901…from what I can tell the community has only developed technique for the H-901 variant.
#2 Get a micro SD card and load it with Magisk https://forum.xda-developers.com/apps/magisk/official-magisk-v7-universal-systemless-t3473445 , and if you have Marshmallow or Lollipop and want Nougat (much better experience IMHO), load the files in this thread: https://forum.xda-developers.com/tmobile-lg-v10/development/h901-t-mobile-nougat-v30b-twrp-t3639203 And maybe this thread as well (read both and then decide): https://forum.xda-developers.com/tm.../h901-t-mobile-nougat-v30c-flashable-t3744648
#3 Ensure you have unlocked your bootloader. (apparently only for T-mobile LG v10s since other carriers lock the bootloader) The FWUL virtual machine root method will not work if you have not done so. This is an entire process in itself. The following 2 videos which show how to root android 6.0 or earlier (process will not work with Nougat, 7.0, since some fastboot commands are missing). https://youtu.be/OtXlokk6JkQ , https://youtu.be/PPLwFGxLQA4
Also, this thread may be helpful. https://forum.xda-developers.com/tm...t-mobile-bootloader-factory-unlocked-t3236224 , download the nexus root toolkit here for easy ADB command entry http://www.wugfresh.com/nrt/ —we will only use the “Advanced Utilities” -> ”Manual Input” -> ”Launch CMD Prompt”. When it prompts you to select a phone, select the first option and then for android version select Android *** Any. Don’t use any of the other commands because they are not configured for your device.
If you get a “waiting for device” error while attempting the fastboot oem unlock command in the above thread, see: https://forum.xda-developers.com/tmobile-g4/help/fastboot-waiting-device-t3489789 Great video which shows how to change drivers. You will need to do this, I found a number of drivers that were already on my PC from google and Samsung worked although I didn’t have the specific one mentioned in the above thread. Don’t be afraid to experiment… you can always try another driver. And don’t require it to be hardware compatible. Ignore the warning message: https://youtu.be/nQjg6ePnGAc
---------------------------------------------
NOW that you have your bootloader unlocked you can proceed to actually flash the TWRP image as per this thread: https://forum.xda-developers.com/tmobile-lg-v10/general/root-h901-nougat-t3773942
Notes before beginning:
-To enter download mode to begin: Plug a USB cable into your phone with your phone powered off, hold down on the Vol Up button and plug the USB cord into your computer. It should immediately boot into download mode. Exiting Download mode after flash: pull battery…no damage will be done.
-To enter recovery after flashing TWRP: power off the phone then hold both the down volume and power at the same time. When you see the black LG screen briefly release the power button and then press it again while not letting the volume down up. You will see a screen asking if you want to delete all user settings. Say YES (via the volume and power keys—no touch input). You will see a screen asking if you want to delete all user data. Say YES (the data is only deleted if TWRP loads successfully) You will briefly see the black LG bootup screen. TWRP or factory recovery will load. Or if you did not unlock your bootloader, it will say recovery is corrupted and cannot be trusted, and then boot normally without changing your settings or deleting files.
-Additional note: as of 7-23-18 some commands had changed:
From V20 forum, Brian (runningnak3d) has moved to gitlab.com. So instead of github.com, we have to use a new git repository that Brian created in gitlab.com.
cd
mv lglaf lglaf_BAK
git clone https://gitlab.com/runningnak3d/lglaf
cd lglaf
git pull
git checkout v10-miscwrte
There are additional comments in the thread. Some timeout errors may be solved by: 1 - Download the VirtualBox extension pack: https://download.virtualbox.org/vir..._VirtualBox_Extension_Pack-5.2.8.vbox-extpack
2 - Go to File / Preferences / Extensions / click the + and browse to where you downloaded it.
3 - Once installed, with the VM off, right click on the VM, and go to settings. Click on USB, and pick USB 3.0. If your machine doesn't have a USB 3 port, pick 2.0.
But frankly, simply up arrow after a timeout error to load the last command on the command line and hit enter again. Simply keep doing this until it works. You know it works because no dialog appears for several minutes before informing one of success.
**Upgrade to Nougat after Flashing TWRP and booting to Recovery steps: (I did a full wipe as suggested by this thread: https://forum.xda-developers.com/v20/development/h918-recowvery-unlock-v20-root-shell-t3490594 before flashing the v30b upgrade then full Nougat zip, and then flashing Magisk. I flashed the 3 zips sequentially. I was afraid Nougat would not boot successfully because the zip files are less than 2 gb combined but success! You may want to also flash the 30c upgrade before flashing Magisk for a total of 4 zip flashes. I did not try this. However doing all this means no backups are done so if there is a problem you may have to flash a KDZ with the LG UP tool (don’t ask me how).
As a final note, I cannot answer specific questions about the various processes provided or errors you may encounter that I have not listed in this write up since I have not experienced them. A bit of research on your part may be required, but this post should provide you with a huge head start compared to where I started. Good luck!
Methods to get unlimited mobile hotspot, very useful if you're on the $50 MetroPCs (owned by T-mobile) unlimited plan. All you $70 T-mobile plan suckazzz! https://forum.xda-developers.com/tm...ited-tetherting-hotspot-t3825144#post77249285
I would actually recommend using a USB tether client and forgoing root access if tethering is your only objective and you are trying to be efficient with your time. However, with root you can install all these cool apps!: https://www.digitaltrends.com/mobile/best-android-root-apps/
The following caught my eye:
-Rec: screen record
-liveboot: boot animation (does not work with Magisk)
-Servicely: checks to see which apps are using a lot of battery and lets you suppress them
-Adblock Plus
-Titanium backup: very powerful phone backup application & bloatware remover look into for quickly switching over to a different lg v10
-Greenify: put apps into hibernation
-System tuner: get lots of info about you phone but be careful making changes
-ES file explorer: dig into the android system
-Disk digger: recovers deleted files (photos only?)
Hi there,
So After seen many tutorials I wanted to proceed to unlock the bootloader of my Huawei Mediapad T5 , here are the specs
```
Model: AGS2-W09
Build No: AGS2-W09 8.0.0.360(OCEC431)
CPU : Hisilicon Kirin 659
Android Version: 8.0
```
I have downloaded the last build of `potatoNV` along with the SER Drivers ,
I have booted in untrusted driver mode (on Win10) and have installed `usbser.sys` as far as I recall
I proceed opening the Tablet from inside and shorting the "short point" and I get connection with the Computer , I installed the drivers , and tried on `potatoNV` with `Kirin 65x (A)` .
I get to the end of the progress bar , and then I get the problem as there is no confirmation that the process has been performed correctly. The connection dissapears , and If I try to boot on rescue mode and I do `.\fastboot.exe devices` or `fastbook.exe oem device info` it doesnt show no device at all.
Also the `rescue mode` menu says `Phone locked , FRP Unlocked` So I guess I had no luck
Please see the video on the link (note that the 2 takes are not synchronized)
doubt-mediapadt5-bootloaderunlock.mp4
drive.google.com
What I may be possibly doing wrong ? May it be the USB connection (cables or connectors) ? or the drivers I downloaded?
Please any assitance will be appreciated.
Thanks
Maybe I can help you with this. Recently rooted this tab myself. Please give me a reminder tomorrow
Hey there I just saw the message . Please if you can guide me a bit of what I may be doing wrong? Also If there is a way to share the Drivers files that you used that would be great (I'm not sure if it was a matter of drivers or general clumsiness , please If you have a minute to check the video tell me what may be wrong on my "Technique") Thank you!!
freddieventura said:
Hey there I just saw the message . Please if you can guide me a bit of what I may be doing wrong? Also If there is a way to share the Drivers files that you used that would be great (I'm not sure if it was a matter of drivers or general clumsiness , please If you have a minute to check the video tell me what may be wrong on my "Technique") Thank you!!
Click to expand...
Click to collapse
Just saw your responce now (please use reply next time, I will get an notification then ).
The "Kirin 65x (A)" you've used is the correct bootloader. So guess it would have been something going on with the drivers or the procedure.
I recently (about 1 month ago) rooted this tab myself so I think I will have quite recent files for doing so. Maybe I can send them to you if you like. But I should have save the websites where I got them from too. But need to check it up for you then.
{
"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"
}
Did you have used the settings above?
You did had recieved the "New unlock code" message?
I have to go to work now, but I could help you further later this evening if you need further assistance
Rockel said:
Just saw your responce now (please use reply next time, I will get an notification then ).
The "Kirin 65x (A)" you've used is the correct bootloader. So guess it would have been something going on with the drivers or the procedure.
I recently (about 1 month ago) rooted this tab myself so I think I will have quite recent files for doing so. Maybe I can send them to you if you like. But I should have save the websites where I got them from too. But need to check it up for you then.
View attachment 5391207
Did you have used the settings above?
You did had recieved the "New unlock code" message?
I have to go to work now, but I could help you further later this evening if you need further assistance
Click to expand...
Click to collapse
Hi, thanks for assisting me. Yeah well, the version I used of PotatoNV(the last build) just had the option of Disable FBlock so I did that.
Also I tried wth a previous build that was showing both versions as you are showing and it happened the same thing.
My guess are more focused on 2 probable mistakes by my side either:
- When shorting the short point Im not doing it correctly. (not sure if this, as the device gets detected by PotatoNV and initiates the process)
- (Most likely thisone). Wrong drivers, I have downloaded them through a link found in a youtube video, and the video was not specific about this Tablet. Also there were a bunch of drivers within the same file so I installed one that looked like the correct one (but not 100% sure)
Anyways thanks for taking your time really and appreciate a reply but always whenever you find free time obviously. Take it easy today at work
freddieventura said:
Hi, thanks for assisting me. Yeah well, the version I used of PotatoNV(the last build) just had the option of Disable FBlock so I did that.
Also I tried wth a previous build that was showing both versions as you are showing and it happened the same thing.
My guess are more focused on 2 probable mistakes by my side either:
- When shorting the short point Im not doing it correctly. (not sure if this, as the device gets detected by PotatoNV and initiates the process)
- (Most likely thisone). Wrong drivers, I have downloaded them through a link found in a youtube video, and the video was not specific about this Tablet. Also there were a bunch of drivers within the same file so I installed one that looked like the correct one (but not 100% sure)
Anyways thanks for taking your time really and appreciate a reply but always whenever you find free time obviously. Take it easy today at work
Click to expand...
Click to collapse
Not sure, I should get into it again, but I'm not sure of potato is able to start the procesure or finding the divice if not shorted correctly.
Do you have a screenshot of your potato output/ results?
How are you performing the shorting procedure?
I can see if I can look for you for the right drivers tonight.
Rockel said:
Not sure, I should get into it again, but I'm not sure of potato is able to start the procesure or finding the divice if not shorted correctly.
Do you have a screenshot of your potato output/ results?
How are you performing the shorting procedure?
I can see if I can look for you for the right drivers tonight.
Click to expand...
Click to collapse
I hve uploaded the video which shows all the output and how Im shorting the point. The video though is composed by two takes and are not synced in time but that is how I do it.
doubt-mediapadt5-bootloaderunlock.mp4
drive.google.com
Let me know if you can watch it on there. Thanks
freddieventura said:
I hve uploaded the video which shows all the output and how Im shorting the point. The video though is composed by two takes and are not synced in time but that is how I do it.
doubt-mediapadt5-bootloaderunlock.mp4
drive.google.com
Let me know if you can watch it on there. Thanks
Click to expand...
Click to collapse
Oh yes, forgot about the video in the OP...
Seems you're folowing the wrong procedure with the shorting proces.
And seems your potato version is a bit outdated. But don't think this will be much of an issue.
- Your tablet needs to be turned off.
- cable removed from the tab.
- start potato
- then short the circuit (tab turned off).
- keep it shorted and insert the usb cabel (the other end should be in the computer already)
- the tablet starts (i believe in somekind of flash mode. And i believe you should not be able to see the Huawei logo in this procedure).
- after 2 or 3 seconds after booting, release the shorted circuit.
- i believe it should display you now some info about the tab itself in potato when you press start.
P.s. Don't forget to make a screenshot of the results or write down the newly given unlock code. So you can use it afterwards to lock or unlock your bootloader at a later moment, without opening the tab again.
P.s. 2 I just read in your comment that the recordings are not synchronised. So it's possible you were following the correct steps above. Correct me if I'm wrong please
freddieventura said:
I hve uploaded the video which shows all the output and how Im shorting the point. The video though is composed by two takes and are not synced in time but that is how I do it.
doubt-mediapadt5-bootloaderunlock.mp4
drive.google.com
Let me know if you can watch it on there. Thanks
Click to expand...
Click to collapse
I'm home (finally)...
If the steps mentioned above didn't worked out, I would like to ask you to do axactly as I did. Just unlocked my Mediapad T5 just 1 month ago or so, so everything I've used should be recent enough I guess.
First:
- Un-install your potato version.
- Un-install your Mediapad T5 USB drivers.
So we can begin from scratch
Also:
- turn on OEM-unlock and USB-debugmode in developer settings.
I asume you have a decent and working ADB version installed on your PC?
If not, or when you're not sure, uninstall it too.
I was using the Minimal ADB and Fastboot from here:
[TOOL]Minimal ADB and Fastboot [2-9-18]
Introduction ADB and Fastboot are arguably two of the most indispensable tools used when working with Android devices. If you really want to modify, debug, and tweak along with their countless uses in rooting, and other procedures ADB and...
forum.xda-developers.com
Then:
1) Install the Huawei USB drivers from here:
Support area | files.dc-unlocker.com
(this) or (this) are the "official" sites I got this from.
2) Install the latest version of PotatoNV from here:
GitHub - mashed-potatoes/PotatoNV: Unlock bootloader of Huawei devices on Kirin 960/95х/65x/620
Unlock bootloader of Huawei devices on Kirin 960/95х/65x/620 - GitHub - mashed-potatoes/PotatoNV: Unlock bootloader of Huawei devices on Kirin 960/95х/65x/620
github.com
Open potatoNV and use these settings marked in red:
3) Plug the USB-cable into your PC already, but don't connect the other side to the tablet. And make sure your tablet is turned off.
4) Now short the testingpoint with a shielded part. I just used a thick copper wire and used it between testingpoint and metalshield just next to it. Metal pliers as used in your video should work too ofcourse.
P.S. I see that you also disconnected your screen in the video? It seems that it's verry important not to see a charging icon in the next step, so maybe it's better to connect it again for this step.
5) While still shorting the testingpoint with the shield, connect the USB cable to your tablet and be sure no charging icon pops up (This can be a bit difficult doing on your own. Easiest way is to have someone around te help in this step). After a few secconds when connected (without seeing an charging icon) remove the shorting between testingpoint and shield.
6) Make sure that the Huawei USB COM is selected in PotatoNV (and that the other settings are the same as the screenshot)
7) And pres "Start!"
8) You should get similar results now:
PotatoNV v2.2.1
User manual: https://kutt.it/pnv-en
Verifying images...
Uploading hisi65x_a...
- xloader
- fastboot
Waiting for any device...
Connecting...
Serial number: FQB***************
Board ID: FQB*************
Model: AGS2-W09
Build number: AGS2-W09 8.0.0.360(OCEC431)
FBLOCK state: unlocked
Saved key: 6BN**************
Writing FBLOCK...
Writing WVLOCK...
Writing USRKEY...
Rebooting...
New unlock code: 3BS*************
p.s. In your video it seemed your device got disconnected somehow while uploading. You should not see that "timeout" message here now annymore.
9) Make a screenshot of your results, copy them to a text file or write down at least your "new unlock code"
So you won't have to open your tablet annymore in the future. You can use this newly obtained unlock code now to lock and unlock your tablet without opening again.
10) You should now see a warning screen everytime you reboot the tab. It warns you about that the device can't be trusted annymore because of the unlocked bootloader.
You can also enter Fastboot to check it
Fastboot/ Bootloader mode:
1. Turn off the device by holding the Power key for a few seconds.
2. Connect tablet to PC/laptop using the USB-cable.
3. Hold down Volume-Down.
4. Hold down the Power button until device starts (while still holding Volume-Down and USB connected).
4. Tablet boots now into Fastboot-mode.
You should see the following screen then (pay attention on the 2 red lines at the bottom):
You can close your tablet now!
Rockel said:
I'm home (finally)...
If the steps mentioned above didn't worked out, I would like to ask you to do axactly as I did. Just unlocked my Mediapad T5 just 1 month ago or so, so everything I've used should be recent enough I guess.
First:
- Un-install your potato version.
- Un-install your Mediapad T5 USB drivers.
So we can begin from scratch
Also:
- turn on OEM-unlock and USB-debugmode in developer settings.
I asume you have a decent and working ADB version installed on your PC?
If not, or when you're not sure, uninstall it too.
I was using the Minimal ADB and Fastboot from here:
[TOOL]Minimal ADB and Fastboot [2-9-18]
Introduction ADB and Fastboot are arguably two of the most indispensable tools used when working with Android devices. If you really want to modify, debug, and tweak along with their countless uses in rooting, and other procedures ADB and...
forum.xda-developers.com
Then:
1) Install the Huawei USB drivers from here:
Support area | files.dc-unlocker.com
(this) or (this) are the "official" sites I got this from.
2) Install the latest version of PotatoNV from here:
GitHub - mashed-potatoes/PotatoNV: Unlock bootloader of Huawei devices on Kirin 960/95х/65x/620
Unlock bootloader of Huawei devices on Kirin 960/95х/65x/620 - GitHub - mashed-potatoes/PotatoNV: Unlock bootloader of Huawei devices on Kirin 960/95х/65x/620
github.com
Open potatoNV and use these settings marked in red:
View attachment 5391609
3) Plug the USB-cable into your PC already, but don't connect the other side to the tablet. And make sure your tablet is turned off.
4) Now short the testingpoint with a shielded part. I just used a thick copper wire and used it between testingpoint and metalshield just next to it. Metal pliers as used in your video should work too ofcourse.
View attachment 5391623
P.S. I see that you also disconnected your screen in the video? It seems that it's verry important not to see a charging icon in the next step, so maybe it's better to connect it again for this step.
5) While still shorting the testingpoint with the shield, connect the USB cable to your tablet and be sure no charging icon pops up (This can be a bit difficult doing on your own. Easiest way is to have someone around te help in this step). After a few secconds when connected (without seeing an charging icon) remove the shorting between testingpoint and shield.
6) Make sure that the Huawei USB COM is selected in PotatoNV (and that the other settings are the same as the screenshot)
7) And pres "Start!"
8) You should get similar results now:
PotatoNV v2.2.1
User manual: https://kutt.it/pnv-en
Verifying images...
Uploading hisi65x_a...
- xloader
- fastboot
Waiting for any device...
Connecting...
Serial number: FQB***************
Board ID: FQB*************
Model: AGS2-W09
Build number: AGS2-W09 8.0.0.360(OCEC431)
FBLOCK state: unlocked
Saved key: 6BN**************
Writing FBLOCK...
Writing WVLOCK...
Writing USRKEY...
Rebooting...
New unlock code: 3BS*************
p.s. In your video it seemed your device got disconnected somehow while uploading. You should not see that "timeout" message here now annymore.
9) Make a screenshot of your results, copy them to a text file or write down at least your "new unlock code"
So you won't have to open your tablet annymore in the future. You can use this newly obtained unlock code now to lock and unlock your tablet without opening again.
10) You should now see a warning screen everytime you reboot the tab. It warns you about that the device can't be trusted annymore because of the unlocked bootloader.
You can also enter Fastboot to check it
Fastboot/ Bootloader mode:
1. Turn off the device by holding the Power key for a few seconds.
2. Connect tablet to PC/laptop using the USB-cable.
3. Hold down Volume-Down.
4. Hold down the Power button until device starts (while still holding Volume-Down and USB connected).
4. Tablet boots now into Fastboot-mode.
You should see the following screen then (pay attention on the 2 red lines at the bottom):
View attachment 5391639
You can close your tablet now!
Click to expand...
Click to collapse
Thanks very much for your explanation , I will do this when I am back at home and let you know .
Cheers!!
freddieventura said:
Thanks very much for your explanation , I will do this when I am back at home and let you know .
Cheers!!
Click to expand...
Click to collapse
Are you btw sure that the pliers you used in in the video are making a circuit from one point to the other? Maybe worthwile to measure the resistance first?
I just used a thick copper wire and bended it to an easy to use U-shape.
Rockel said:
Are you btw sure that the pliers you used in in the video are making a circuit from one point to the other? Maybe worthwile to measure the resistance first?
I just used a thick copper wire and bended it to an easy to use U-shape.
Click to expand...
Click to collapse
Sorry Rockel I have been very busy this week , I'm gonna try and find a little bit of time to get this done this weekend . Thank you!!
freddieventura said:
Sorry Rockel I have been very busy this week , I'm gonna try and find a little bit of time to get this done this weekend . Thank you!!
Click to expand...
Click to collapse
No problem, take your time. Hope these steps wil solve your problem. Please keep me informed when you have time
Rockel said:
No problem, take your time. Hope these steps wil solve your problem. Please keep me informed when you have time
Click to expand...
Click to collapse
Do angels wear capes? because I haven't seen yours .
Much much much appreciate your help with this, I have just done it perfectly it didn't take me much time to do it.
Whatever I was doing wrong (probably the drivers , probably the shorting point thing not doing it properly) , whatever who cares!!.
I was also a bit not confident to do it that's why it took me time to get into doing it , but you definitely coached me with your messages .
Really thanks very much Rockel . For anything we keep in touch mate
freddieventura said:
Do angels wear capes? because I haven't seen yours .
Much much much appreciate your help with this, I have just done it perfectly it didn't take me much time to do it.
Whatever I was doing wrong (probably the drivers , probably the shorting point thing not doing it properly) , whatever who cares!!.
I was also a bit not confident to do it that's why it took me time to get into doing it , but you definitely coached me with your messages .
Really thanks very much Rockel . For anything we keep in touch mate
Click to expand...
Click to collapse
Hehehehe, thanks for your nice responce!
So I asume You've managed to root unlock the device now!
It was a pleasure assisting you in this.
If you need anny other information regarding this rooted device, please let me know. I'm not a pro with this. But had to solve a few problems myself. And came there with the help of others aswell.
What is the use of New unlock code?
do anyone have system, boot, cust, recovery, userdata.img with you i want to try with multi-tool to unbrick my tab
The unlock code can be used to unlock bootloader (using something like "adb oem unlock <code>" from PC)
I have saved the OTA folder form huawei system update app just before updating from 8.0.0.320(C432) to 8.0.0.371(C432), it can be found in /data/HwOUC folder after updater finished downloading. This version cannot be found on HuaweiFirmwareFinder site but I have temporary shared then here. Perhaps we could contact the authors to upload this version.
You can later use HuaweiFirmwareExtractor to extract different images from the zip files (no clue why there are 3 of them).
You need to disable "Verify Header checksums" in the "Settings" to open the extracted update.app files from the zips.
Good luck!
denzelcris said:
The unlock code can be used to unlock bootloader (using something like "adb oem unlock <code>" from PC)
I have saved the OTA folder form huawei system update app just before updating from 8.0.0.320(C432) to 8.0.0.371(C432), it can be found in /data/HwOUC folder after updater finished downloading. This version cannot be found on HuaweiFirmwareFinder site but I have temporary shared then here. Perhaps we could contact the authors to upload this version.
You can later use HuaweiFirmwareExtractor to extract different images from the zip files (no clue why there are 3 of them).
You need to disable "Verify Header checksums" in the "Settings" to open the extracted update.app files from the zips.
Good luck!
Click to expand...
Click to collapse
thank you .. but i extract app didnt uderstand which img file to install there no exact name for boot.img, recovery.img, cust.img, can you plz tell me which file equal to those file..
I don't think Huawei has boot.img or recovery.img, they may have a different layout and names (someone correct me if I'm wrong). I know the equivalent of boot.img is ramdisk.img or kernel.img (I flash both when restoring to be sure) and recovery should be recovery_ramdisk.img. The names from HuaweiExtractor should match with the images. Cust.img can be found in the other zip: update_full_AGS2-W09_hw_eu.
There is also this partition layout table which I don't know how it works for Huawei but I know that it may change for different firmwares so it is usefull to have remembered what version you had previously or use a safe tool to flash that also.
I guess I finally hard-bricked my N920P trying to install Universal SafetyNet Fix. It was on stock (N920PVPS3DRH1) but I had TWRP and Magisk Canary installed. I was trying to get Zygisk working but couldn't get it properly turn on, even on the stable and canary builds. That's where I had tried to install the SafetyNet fix module. It said it doesn't fully support anything below Android 8.0, but it did finish installing and asked me to reboot. And it never turned back on.
I cannot get into the download mode, recovery or system. Tried all key combos and no life at all. I drained the battery all night long and tried plugging into the PC and now it detects it as an unknown "Exynos7420" device. That was something from the nothing I got before. I tried looking up on how to rebuild the corrupt bootloader but I couldn't wrap my head around on how the process works. There was material on getting a software called "USB_Downloader" and I got all the way to installing the drivers and getting that software recognise the device as a COM port. I did this in a Windows 7 32 bit VM on VirtualBox (VMWare kept crashing my entire USB Host Controller everytime I tried passing the phone's connection to the VM, which was weird).
Now I'm stuck with this software and am unable to understand what I need to do next. There was something about getting the sboot.bin file and creating 4 new files to push through the Exynos COM port to fix the bootloader. There was also something about getting a Hex editor to do this, but I cannot understand what's going on. Could someone please help me get around this?
Thanks in advance!!
Never mind I fixed it. Just posting it here to make sure no one else gets stuck like I did for a long while. So what I had done was I forgot I had a custom ROM installed. It had been based on the N920PVPU3DQC5 firmware. So I downloaded that firmware, extracted the sboot.bin file then went to work with a hex editor (HxD for Windows specifically).
Open sboot.bin in the hex editor and start making new files listed below. The sections are also listed below, you can ensure the size in the bottom of HxD.
Save them as novi1.bin, novi_2.bin, etc...
The offsets I used are:
BL1 or novi1.bin: 0 - 0x1FFF (size 0x2000)
BL2 or EL3 or novi_2.bin: 0x2000 - 0x31FFF (size 0x30000)
EL3 or BL2 or novi_3.bin: 0x32000 - 0x3dfff (size 0xC000)
S-BOOT or novi_4.bin: 0x3E000 - 0x18F100 or end of file (size 0x15110), this will include tzsw.
Next this is the cfg file I used:
Code:
; S Project
; must keep order of binary list
; BL1
DNW_STORE e5250 fwbl1 200 20 novi1.bin
;DNW_WAIT
; BL2
DNW_STORE e5250 el3_mon 2000 20 novi_2.bin
; u-boot
; Wait Re-Enumeration
DNW_WAIT
DNW_STORE e5250 bl2 2000 20 novi_3.bin
;DNW_WAIT
DNW_STORE e5250 bootloader 20000 20 novi4.bin
;DNW_WAIT
;DNW_STORE e5250 tzsw 20000 20 4pt.img
Copy this code and save it as SH-usb-booting.cfg in the same folder as your .bin files. Now you can launch the multidownloader and load the .cfg and select Auto Run. Now press and hold the power button on your phone and connect it to the PC. It should automatically go through the whole flashing process and end up in the download mode screen. You can now flash the firmware from there!
If you have any doubts hit me up!
LOL I'm stuck again. I got into Download mode but my VM was having trouble connecting to the Download mode USB modem and it crashed the USB controller on my PC. I had to reboot the phone and now I'm stuck again in Exynos USB mode. Trying to get back into Download mode using the files I created above but it's not working anymore. I can hear the USB getting disconnected on the host at the AP Re-enumeration step but it isn't disconnecting from the guest VM. I guess I'll have to find a physical PC to try this out on.
EDIT: I had used VirtualBox until this step. After the hanging on Re-enumeration issue, I figured it could be Virtualbox causing the issue so I tried using VMWare, and ta-da, it worked. Read posts below for updates.
So I somehow got myself to get into Download mode consistently. Turned out my VM's USB controller was acting up so I clean installed it and I'm able to send the sboot files and get into Odin mode. But new trouble. Everytime I flash the stock firmware it goes through the process, passes and resets. But it never boots!! Just goes back to the same Exynos mode. I can re-flash the sboot file to get back into Odin mode but I'm stuck like this. I have no idea what to do now...
Progress so far:
I can't remember what custom ROM I had originally. Radeonmaya S8+ N920P ROM was supposed to be based on the DQC5 deodexed stock ROM posted here in the N920P forum.
1. Tried creating new files from DQC5 - SPR sboot.bin: Booted into Download mode, tried flashing the 4 file firmware, no progress, resets back into Exynos mode.
2. Used the DQC5 - SPR sboot.bin to boot into download mode: Tried flashing thr 4 file firmware for the latest firmware that was installed in the phone which was DRH1. No progress, resets back into Exynos mode.
If I'm reading this correctly, the Radeommaya ROM makes changes to boot.img and system partitions. Everything else remains stock, therefore my original bootloader for firmware DRH1 should work. However, I'm not able to get into the system.
I must note that TWRP recovery was installed on the device. The best course of action would be to install the same custom ROM back together with TWRP, but I could not find an Odin flashable tarball for the Radeonmaya ROM. The forum's been dead for a couple of years and the Telegram group is also dead. Looking for ways to make my own tarball using handpicked files maybe.
Currently trying to create new .bin files to boot into Download mode via the Multidownloader from sboot.bin files I salvaged from the XAS (Sprint Unbranded) firmware packages DRH1 and DQE1 (Apparently this firmware has helped someone in the Radeonmaya ROM thread to boot back into the system from a similar hard bricked situation, however I speculate this would not fix my problem because the DQE1 firmware is newer than the DQC1 firmware, which the custom ROM was based upon)
Will post more findings later.
P.S. VMWare could be quite finicky to work with when trying to passthrough the Exynos USB Device to a Windows 7 guest. It caused my AMD Ryzen host to crash its entire USB controller and both my USB mouse and the phone wouldn't connect to the HOST, let alone the guest. It causes a never-ending loop in the code which also stops a proper system restart, hence needing you to force power-cycle the whole computer.
This is because of the unusual nature of the driver being 32-bit only and incompatibility with VMWare. However, it should work when you reinstall VMWare without the Enhanced Keyboard driver, and also reinstalling the Exynos USB driver on the host and the VMWare USB Device (found in the Universal Serial Bus controllers section when you have the USB connection passed through to the VM).