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Dell Venue 7 BOOT PROBLEM
Hello,
I replaced frameworks-res.apk, and others, for change design, but now i can't boot my tab ! , it just booting booting booting booting and booting, factory reset not helped?, can you help me please?
It's Dell Venue 7 3730
ManXXXX said:
Hello,
I replaced frameworks-res.apk, and others, for change design, but now i can't boot my tab ! , it just booting booting booting booting and booting, factory reset not helped?, can you help me please?
It's Dell Venue 7 3730
Click to expand...
Click to collapse
You need to flash again the stock rom, the factory reset won't work.
You can found it here http://forum.xda-developers.com/showpost.php?p=51090040&postcount=2 and flashing through fastboot
I don't know what frameworks-res.apk you used, but maybe you forgot set the right permissions, or maybe you took the files for other device.
DL VN 7
Is there some tutorial for flash with fastboot??, i never did it, and i don't want destroy some other..
Go here to Dell's opensource site.. http://opensource.dell.com/releases/...loper-edition/
Link
No working link
ManXXXX said:
No working link
Click to expand...
Click to collapse
first
sorry for the late reply.
In the dell's opensource page there aren't files for the 3730 (i don't know why)
but, may be i'm wrong, there aren't tutorials for flashing in fastboot, i only found posts in xda's dell venue general forum.
i'll write here a guide if you still without founding a tutorial and for any others if found this post
you need:
intel usb drivershttps://software.intel.com/en-us/android/articles/intel-usb-driver-for-android-devices , read the instruccions if you are in windows 8 (i'm on win7 so i cannot tell you if is the same method or not)
The tools for fastboot (there are in a folder called "google") is a little confused so better download @social-design-concepts miKIT_BATCH HERE (before continue let's say thanks to @social-design-concepts for his useful tool that also works for root ),extract wherever you want in your computer.
the files to flash HEREdownload the package for your device and once donwloaded extract where you want in your computer
NOW FOR FLASH
1.-
Install the intel android usb drivers, if you did this before, skip
2.-
Open the myKIT_BATCH folder and run the "runme.bat" file, then type ACCEPT, after that type 2 and press "enter" (the option 1 is for update the driver, in myKIT_BATCH's post 1 is explained) the font should be red.
3.-
boot into fastboot (press button "power" and button "volume down" at the same time) your tablet's screen will display a blue android with gears inside and below it the "droidboot" text and your device info in your device's top|left screen corner , if yes connect your tablet to pc to recognize it (if is the first time).
4.- Open a command window
after the pc recognizes your tablet unplug and plug again the usb cable, should be faster the recognicion this time.
Then in myKIT_BATCH window press "enter" to refresh, the font will become green and will display your device's info, if is going fine in the window type 4 and press "enter", will appear another window.
IF everything still going fine in the new command window type:
Code:
fastboot devices
will display your device's info
5.- let's start with fastboot
BUT first ENSURE THAT THE BATTERY HAVE A CONSIDERABLE CHARGED LEVEL
Unfortunately i don't know what happens if the tablet power off when flashing and if fastboot will work fine after so check your battery charge first
i need to tell you that the 1-4 steps are the most difficult steps (you should have at this time the rom downloaded and extracted only extract the downloaded package (the .7z file)
after this explained so let's start.
5.1.- WIPING
fastboot have some wipe commands so i will explain the 2 that i used:
Code:
fastboot erase cache
This code explains itself, you can try this code to verify that your device is connected
Code:
fastboot erase data
easy to use but powerful, this will erase app's data and also your internal storage (the 11GB that the tablet have to store files), unfortunately i used this without know and i lost 8GB of files
5.2.- NOW TO FLASH
works almost equal with the wipping commands so it's easy to explain.
let's start with system
for a easy explain you ned to open a window where the rom's files are stored in your pc and in the command shell type "fastboot flash system" and after that drag the system file (system.img.tar.gz) to the command window after dragging the file will appear in the command window the full path of the file
I.E i have a dell venue 8 3830 and i want to flash the jellybean 4.2.2 stock rom so i downloaded the Venue_8_WiFi_JB4.2.2v1.42_FLASHPKG and extract this in F:\VENUE 8 3830\stock rom folder so after type the command and drag and drop the system file in my command window will display this:
Code:
fastboot flash system F:\VENUE 3830\stock rom\VENUE_8_WIFI_JB4.2.2v1.42.system.img.gz
after this the command press "enter" and you don't need to do nothing (maybe your window will turn off and maybe you try to turn on but will keep off, don't worry only let fininsh) the fastboot program will start to prepare the file for upload to the tablet and after that to flash.
this will finish in 1-2 minutes.
NOW THE BOOT.IMG
is the same way than system but faster.
after finishing flashing system (when the window diplays the elapsed time) type: "fastboot flash boot" and drag and drop the boot.img file in the command window
I.E. in my device will be like this:
Code:
fastboot flash boot F:\VENUE 3830\stock rom\VENUE_8_WIFI_JB4.2.2v1.42.boot.img
press "enter" and will do the same like system prepare,upload and flash the file.
there are in the download package more file but only with BOOT and SYSTEM flashed your tab should boot
but if you want to flash the other images you need to type
for recovery:
Code:
fastboot flash recovery F:\VENUE 3830\stock rom\VENUE_8_WIFI_JB4.2.2v1.42.recovery.img
and for fastboot:
Code:
fastboot flash fastboot F:\VENUE 3830\stock rom\VENUE_8_WIFI_JB4.2.2v1.42.fastboot.img
for my example, for you will be change a little
thanks to all who read and understand this guide, bad english
you are free to comment this if i mistake
ADB Driver
Isrks said:
first
sorry for the late reply.
In the dell's opensource page there aren't files for the 3730 (i don't know why)
but, may be i'm wrong, there aren't tutorials for flashing in fastboot, i only found posts in xda's dell venue general forum.
i'll write here a guide if you still without founding a tutorial and for any others if found this post
you need:
intel usb drivershttps://software.intel.com/en-us/android/articles/intel-usb-driver-for-android-devices , read the instruccions if you are in windows 8 (i'm on win7 so i cannot tell you if is the same method or not)
The tools for fastboot (there are in a folder called "google") is a little confused so better download @social-design-concepts miKIT_BATCH HERE (before continue let's say thanks to @social-design-concepts for his useful tool that also works for root ),extract wherever you want in your computer.
the files to flash HEREdownload the package for your device and once donwloaded extract where you want in your computer
NOW FOR FLASH
1.-
Install the intel android usb drivers, if you did this before, skip
2.-
Open the myKIT_BATCH folder and run the "runme.bat" file, then type ACCEPT, after that type 2 and press "enter" (the option 1 is for update the driver, in myKIT_BATCH's post 1 is explained) the font should be red.
3.-
boot into fastboot (press button "power" and button "volume down" at the same time) your tablet's screen will display a blue android with gears inside and below it the "droidboot" text and your device info in your device's top|left screen corner , if yes connect your tablet to pc to recognize it (if is the first time).
4.- Open a command window
after the pc recognizes your tablet unplug and plug again the usb cable, should be faster the recognicion this time.
Then in myKIT_BATCH window press "enter" to refresh, the font will become green and will display your device's info, if is going fine in the window type 4 and press "enter", will appear another window.
IF everything still going fine in the new command window type:
Code:
fastboot devices
will display your device's info
5.- let's start with fastboot
BUT first ENSURE THAT THE BATTERY HAVE A CONSIDERABLE CHARGED LEVEL
Unfortunately i don't know what happens if the tablet power off when flashing and if fastboot will work fine after so check your battery charge first
i need to tell you that the 1-4 steps are the most difficult steps (you should have at this time the rom downloaded and extracted only extract the downloaded package (the .7z file)
after this explained so let's start.
5.1.- WIPING
fastboot have some wipe commands so i will explain the 2 that i used:
Code:
fastboot erase cache
This code explains itself, you can try this code to verify that your device is connected
Code:
fastboot erase data
easy to use but powerful, this will erase app's data and also your internal storage (the 11GB that the tablet have to store files), unfortunately i used this without know and i lost 8GB of files
5.2.- NOW TO FLASH
works almost equal with the wipping commands so it's easy to explain.
let's start with system
for a easy explain you ned to open a window where the rom's files are stored in your pc and in the command shell type "fastboot flash system" and after that drag the system file (system.img.tar.gz) to the command window after dragging the file will appear in the command window the full path of the file
I.E i have a dell venue 8 3830 and i want to flash the jellybean 4.2.2 stock rom so i downloaded the Venue_8_WiFi_JB4.2.2v1.42_FLASHPKG and extract this in F:\VENUE 8 3830\stock rom folder so after type the command and drag and drop the system file in my command window will display this:
Code:
fastboot flash system F:\VENUE 3830\stock rom\VENUE_8_WIFI_JB4.2.2v1.42.system.img.gz
after this the command press "enter" and you don't need to do nothing (maybe your window will turn off and maybe you try to turn on but will keep off, don't worry only let fininsh) the fastboot program will start to prepare the file for upload to the tablet and after that to flash.
this will finish in 1-2 minutes.
NOW THE BOOT.IMG
is the same way than system but faster.
after finishing flashing system (when the window diplays the elapsed time) type: "fastboot flash boot" and drag and drop the boot.img file in the command window
I.E. in my device will be like this:
Code:
fastboot flash boot F:\VENUE 3830\stock rom\VENUE_8_WIFI_JB4.2.2v1.42.boot.img
press "enter" and will do the same like system prepare,upload and flash the file.
there are in the download package more file but only with BOOT and SYSTEM flashed your tab should boot
but if you want to flash the other images you need to type
for recovery:
Code:
fastboot flash recovery F:\VENUE 3830\stock rom\VENUE_8_WIFI_JB4.2.2v1.42.recovery.img
and for fastboot:
Code:
fastboot flash fastboot F:\VENUE 3830\stock rom\VENUE_8_WIFI_JB4.2.2v1.42.fastboot.img
for my example, for you will be change a little
thanks to all who read and understand this guide, bad english
you are free to comment this if i mistake
Click to expand...
Click to collapse
When i installing the driver, always: Install failed, i have Windows 10 and i added language code
ManXXXX said:
When i installing the driver, always: Install failed, i have Windows 10 and i added language code
Click to expand...
Click to collapse
I found this around here, is for windows 8 but maybe useful for Windows 10
https://software.intel.com/en-us/android/articles/how-to-install-intel-usb-driver-for-android-devices-on-windows-8
ADB Driver
Nah nah this, i think ADB driver.
ManXXXX said:
Nah nah this, i think ADB driver.
Click to expand...
Click to collapse
unfortunately i don't have a computer with windows 10 so i can't solve easily.
i found this googling, so with a little of faith :fingers-crossed: , is the same error than yours http://android.stackexchange.com/questions/118823/how-to-install-adb-drivers-on-windows-10-opoit's for the OPO, but is about the same "intalling adb driver", so could work
in a dessesperate attempt, you can use the update usb drivers in "myKit_BATCH" typing "1" after typyng "ACCEPT"
I fixed it with 15 seconds installer!, i gng try to fix tablet
But i found next problem, after connect tab to PC, just UNKNOWN, and tab is not showing in mykit
ManXXXX said:
But i found next problem, after connect tab to PC, just UNKNOWN, and tab is not showing in mykit
Click to expand...
Click to collapse
Ahh that's add driver not recognize your tablet, I suppose that you connect in fastboot mode,
Try using the option of update the adb driver in Mykit_BATCH, you don't lose nothing trying.
Other option is trying the dell's method http://opensource.dell.com/releases/Venue_8_3830_CloverTrail_plus/developer-edition/Download the pdf file and read the instructions from page 2 to page 9 if still not working
here is the sdk tools for windows that the pdf wants
I downloaded SDK tools, i installed Google usb driver, because it say not installed, when it was installing it said: Disable adb driver, ineffectual, error code -1, but after install it work good, so i will test with this, when no i will try another way, that u wrote here
Finally, tried method, no work, finally, update ADB no working for me, cuz installation always fail, next one DELL method, working but i found problem, dell wrote update driver via google extra with codes, BUT
My first code: USB\VID_413C&PID_B119&REV_????, ????, i think there is something wrong
My second code: USB\VID_413C&PID_B119, i think this one is alright, but then up
Finally with dell next page i'm in!, but my kit no working, in every command shut down, so i using windows cmd, it working too
Mhm bruh, no i'm in flash system, sending 'system' awesome, but it's more than 2 minutes , when it will work, omg u r awesome
Bruh, yay, i did it, thq u r master <33
ManXXXX said:
Bruh, yay, i did it, thq u r master <33
Click to expand...
Click to collapse
Are you telling that the dell method works?
The good new is that your tablet is back (with some problems in the way but work, ). after all now you know how to flash through fastboot. If anyelse goes wrong again, you know what to do
NOTE: Maybe your want to replace the framework-res again, but only will work if is for your device. So i recomend that you modify your stock framework-res by yourself (you can use images or xmls from other sources to your framework-res, this should be safer) using apktool manually or a program (there are some of them in xda, choose your favorite )
Yay 50% of dell method worked, just 50% because Dell have tutorial for setting up ADB service, after it i used your tut, thanks, and believe me i will not test it NEVER again.
Acer Predator 8 GT-810 system\etc backup please!
Make a backup folder etc
Do you still need it? I can send it you tomorrow or something like that.
p8tgames said:
Do you still need it? I can send it you tomorrow or something like that.
Click to expand...
Click to collapse
hey man if u able to send me a back up. Will that solve my problem ?
I made mistake to wipe everything in my phone and now i dont have OS ( i cant start my phone) i can only enter TWRP and thats all. i can use pc to transfer files to my phone and then install the files from there , so i wonder if any1 send me back up will that save me ???
i cand find anywhere OS for acer predator gt 810
there is official avolo zip on acers' page. flash that zip and you're safe
Flash archive corrupted
Hi, I downloaded this archive and I want to flash my tablet, but Intel Phone Flash Tool Lite(flasher for x86 devices) say, that archive corrupted. I downloaded firmware 3 time, but its not working.I used TWRP to install firmware, it installed, but i have BootLoop.Please, someone, do Backup of firmware.
dvijetrecine said:
there is official avolo zip on acers' page. flash that zip and you're safe
Click to expand...
Click to collapse
Hi, I downloaded this archive and I want to flash my tablet, but Intel Phone Flash Tool Lite(flasher for x86 devices) say, that archive corrupted. I downloaded firmware 3 time, but its not working.I used TWRP to install firmware, it installed, but i have BootLoop.Please, someone, do Backup of firmware
Alex_merser54 said:
Hi, I downloaded this archive and I want to flash my tablet, but Intel Phone Flash Tool Lite(flasher for x86 devices) say, that archive corrupted. I downloaded firmware 3 time, but its not working.I used TWRP to install firmware, it installed, but i have BootLoop.Please, someone, do Backup of firmware
Click to expand...
Click to collapse
Use fastboot to flash the stock ROM instead of Intel flash tool. (If you know what you're doing, just read the part in blue below.)
fastboot is for Android devices, whether they have Qualcomm or Intel processors. Using Intel Flash tool is more akin to using Qualcomm's QPST for flashing, which is also something that should only be attempted
after trying fastboot. The Intel flash tool expects the .zip file to be in a format such as a Chuwi ROM with Windows is. Intel Flash tool unfortunately doesn't expect the .zip to be in the Android format like Acer's stock
ROM "AV0L0-something.zip" is.
With the tablet off, and plugged into your computer, hold both volume buttons and power it on. (You probably already knew this step, but here just in case )
It will vibrate longer than it usually does when turning on.
The screen should indicate that the device is in download, or "dnx" mode.
Open a command prompt in administrator mode,(the title of the window should say "Administrator: Windows Command Prompt" or "Administrator: <current directory>")
Type:
Code:
fastboot
If command not found, then either copy fastboot.exe into System32, or add the path it is in to your PATH variable, or simply navigate to its directory within the command prompt.
If you're not familiar with the PATH variable, you can just shift+right-click on fastboot.exe, click "Copy Path" and then paste it into the command prompt to use it's full path in place of simply "fastboot".
Once you're able to type "fastboot" or paste the full path and press enter and it returns the fastboot help message, type:
Code:
fastboot devices
this will either return a single line containing your device's serial number, or it will return nothing at all
If you see a serial number, you're in business.
(make sure the tablet is not low on battery before you continue):
Type:
fastboot update <path to ROM .zip>
Click to expand...
Click to collapse
This should initiate a full reflashing of the stock ROM. The tablet will reboot a couple times, you should hear/feel an even longer vibration during the process, do not touch it or unplug it from the computer until it is at the initial Google device setup screen waiting for your input.
Note that this full reflashing will also overwrite TWRP with the stock recovery.
if "fastboot devices" returns nothing at all, and also doesn't say "command not found" then do the following:
open device manager on computer, find the tablet's driver (may be under portable devices, or COM ports. sometimes under USB.)
if you can't find it, look for an "unknown device" with a yellow exclamation mark on it. If you see that, then you may not have had the driver installed in the first place. To verify, unplug the tablet from the computer
and see if the unknown device disappears from device manager.
If you were able to find the tablet in device manager, then right click and "Uninstall Device" and be sure to check the box to uninstall the driver software as well before clicking OK.
Then, unplug the tablet from your computer if you haven't already.
Download the latest driver from the same place on Acer's website that you downloaded the stock ROM from. Install the driver and restart your computer if it says it needs to.
Afterward, ensure the tablet is off and try the steps above again.
biorpg said:
Use fastboot to flash the stock ROM instead of Intel flash tool. (If you know what you're doing, just read the part in blue below.)
fastboot is for Android devices, whether they have Qualcomm or Intel processors. Using Intel Flash tool is more akin to using Qualcomm's QPST for flashing, which is also something that should only be attempted
after trying fastboot. The Intel flash tool expects the .zip file to be in a format such as a Chuwi ROM with Windows is. Intel Flash tool unfortunately doesn't expect the .zip to be in the Android format like Acer's stock
ROM "AV0L0-something.zip" is.
With the tablet off, and plugged into your computer, hold both volume buttons and power it on. (You probably already knew this step, but here just in case )
It will vibrate longer than it usually does when turning on.
The screen should indicate that the device is in download, or "dnx" mode.
Open a command prompt in administrator mode,(the title of the window should say "Administrator: Windows Command Prompt" or "Administrator: <current directory>")
Type:
If command not found, then either copy fastboot.exe into System32, or add the path it is in to your PATH variable, or simply navigate to its directory within the command prompt.
If you're not familiar with the PATH variable, you can just shift+right-click on fastboot.exe, click "Copy Path" and then paste it into the command prompt to use it's full path in place of simply "fastboot".
Once you're able to type "fastboot" or paste the full path and press enter and it returns the fastboot help message, type:
this will either return a single line containing your device's serial number, or it will return nothing at all
If you see a serial number, you're in business.
(make sure the tablet is not low on battery before you continue):
Type:
This should initiate a full reflashing of the stock ROM. The tablet will reboot a couple times, you should hear/feel an even longer vibration during the process, do not touch it or unplug it from the computer until it is at the initial Google device setup screen waiting for your input.
Note that this full reflashing will also overwrite TWRP with the stock recovery.
if "fastboot devices" returns nothing at all, and also doesn't say "command not found" then do the following:
open device manager on computer, find the tablet's driver (may be under portable devices, or COM ports. sometimes under USB.)
if you can't find it, look for an "unknown device" with a yellow exclamation mark on it. If you see that, then you may not have had the driver installed in the first place. To verify, unplug the tablet from the computer
and see if the unknown device disappears from device manager.
If you were able to find the tablet in device manager, then right click and "Uninstall Device" and be sure to check the box to uninstall the driver software as well before clicking OK.
Then, unplug the tablet from your computer if you haven't already.
Download the latest driver from the same place on Acer's website that you downloaded the stock ROM from. Install the driver and restart your computer if it says it needs to.
Afterward, ensure the tablet is off and try the steps above again.
Click to expand...
Click to collapse
Thank you, but I just entered EFI and load android.efi file, also I autorun it and reflash via recovery
nVidia Shield TV 2017(16gb)China Version(Iqiyi)
Flash non Chinese Version firmware Installation Guide with root
Things to know:
1.Adb & fastboot drivers,shield family drivers.(https://nvidiashieldzone.com/download/shield-family-drivers/).
2.Download the latest Stock Recovery or developer OS Images from nvidia download site(https://developer.nvidia.com/gameworksdownload#?search=SHIELD%20TV%202017&tx=$additional,shield)
Downlaod and extract.(There will be system flash-all.bat to execute in bootloader mode for flashing firmware)
3.To flash firmware you must unlock your bootloader.(It will void your warranty and every reboot Message for lock bootlodaer to avoid corrupt & that cant be removed forever)
4.TWRP download link ,Alwyas check latest build(https://twrp.me/nvidia/nvidiahshieldandroidtv.html (https://eu.dl.twrp.me/foster/twrp-3.2.3-0-foster.img)Thanks for the developer who made custom recovery.
5.Super users or Magisk patching for rooting.Check latest Build on related websites.(Superuser Also Attached)
6.Build.prop modifications.As if user in china need skip setup wizard to go to Launcher screen other wise Google services blocked in china and cant skip the setupwizard without Google linking for signup.Or There are other guides to connect shield with google services wifi. People can able to create hotspot in windows pc or any vpn router.
7.Male to male usb cable.Connect with pc & shield Tv.
Goto to Instructions :
SHIELD TV drivers and conenction is must before go head to below steps.
1.Put shield to Bootloader state by Gamepad Controller.There are adb command also after enabling USB Debugging to put device in bootloader.
PLug your gamepad controller usb in shield tv Near to HDMI usb port.Power Off Shield TV plug take out.
While keep holding down the A and B buttons at the same time, plug the Shield TV into the power supply till it shows bootloader options.(Gamepad will vibrate two times)Ater that you will be in Bootloader screen.
X and Y buttons can use for menu option selection.A for confirm.
Ton makesure if device is connected with pc without any issue use the below command in windiws CMD.
fastboot reboot-bootloader
-or
fastboot devices
2.Unlocking bootloader(Latest 7.2 bootloader will show more options then 7.1 Firmware) Sleect unlock bootloader for latest bootloader 7.2.
otherwise use below commands.Type below command
fastboot oem unlock
-Confirm by pressing A button.It will take while to unlock bootloader(Tooks max 5-10 min)
3.Flashing Stock Firmware(7.1 or 7.2 latest build)
Open the flash-all.bat. It will start flashing the firmware took 5-10 min max.
It will reboot your device and you can see Setupwizard.Firmware Updated.(In China its quite not easy to finish setupwizard)
4.Flashing or Booting custom Recovery or fully repalcing recovery.Put your device in BOOTLOADER as mentiond in Instructions 1.
Open CMD in same directory location.(Rename your TWRP recovery file to recovery.img)
-Type below for Temproray booting to custom recovery.
fastboot boot recovery.img
-Fully Replace stock recovery to Custom TWRP use below command
fastboot flash recovery recovery.img
You will boot in TWRP.And use Backup restore or other funtions.
Install Magisk Mangaer Root or SuperUser Root.There are other Thread available for Superuser & Magisk installation.
5.Applying Superuser root patch OR Magisk Mangaer root patch to boot.img.Download files from Things to know: in step 5.
Click Advanced Adb sideloaded in TWRP menu and apply below commands.
For Flashing Supersuer root(Change zip file name to supersu.zip) OR For flashing Magisk root(Change zip file name to Magisk-v18.0.zip).
adb sideload supersu.zip
or
adb sideload Magisk-v18.0.zip
Skipping SetupWizard
6.This is for Skipping SetupWizard and go to Launcher screen directly.
Got to TWRP Mount option and slect System tick.And use below commands.
adb pull system/build.prop
adb shell mv system/build.prop /system/build.propp
You will see build.prop file in your folder.Open it and go to ro.setupwizard.mode=OPTIONAL and change OPTIONAL to DISABLED (ro.setupwizard.mode=DISABLED)
and Save file.Apply below command tp push modiefied build.prop to system and setting Permissions.
adb push build.prop system/
adb shell chmod 0755 system/build.prop
7.Reboot system from TWRP or adb reboot
I will update this thread based on New 7.2 Upgrade Version after Root & TWRP got updates.
Update 26.12.2018
I downgraded to 7.1 by below step.
-Flashed developer 7.1 firmware.Flash all.bat.Device will reboot after finish and next step must has to follow.
Next step is important-Note
-After install finish shield will reboot so be ready with your Game controller plugged by usb in device in near hdmi usb port.
-hold A B button of controller to enter fastboot and locked the bootloader.
-Rebooted and on 7.1 firmware setupwizard,Luckily after few steps i goes directly to Home screen and adb debugging on.
-Unlocked bootloader and flashed Magiskv18 via twrp.
Now i downloaded FULL OTA Update 7.2.2 and update after backup ota file from Root explorer i patched it with magisk app with Preserve AVB 2.0/dm-verity checked.And saved pathced_boot.img of 7.2.2.
-Then Updated to 7.2.2 ota.
-After boot to home screen enabled adb debugging.and reboot to bootloader.
-flashed pathced_boot.img of 7.2.2.
-rebooted and magisk root available on my 7.2.2 version(as it doesnt shows any version in system info just- Unkown)
-As current magisk wont give full root acces and work as sysemless root.
thanks to follwing guide too.
https://forum.xda-developers.com/sh...7-2-developer-update-downgrade-t3880950/page4
https://forum.xda-developers.com/sh...-root-nvidia-shield-experience-t3882254/page4
Reserve
I've got an Android box with limitations that allows a terminal emulator to send it commands, so I can for instance reboot to recovery.
Is there a command or set of commands that will allow me to reboot into a recovery image on an SD-card?
_________________________
Background, if needed:
I have a copy of TWRP that I'd like to test to see if it is functional on this box and a tutorial I read indicated that if I
1. have an SD card with the recovery.img,
2. press the reset button (it's in the AV jack), and
3. plug in the power at the same time,
I should be able to run TWRP in memory, no flashing required, to test the functionality of the version of TWRP.
It didn't work. No TWRP, it just started stock recovery. Perhaps I screwed up the process, but I tried several times. The operation doesn't seem to need a PhD.
[A95X MAX TV box, s905x2 chipset. The TWRP version is supposedly for a generic s905x2 box.]
Hello,
Any root and custom ROM available for the Lenovo tab m8 tb8505 variant? The stock rom feels good for the price but if something better to make the tab feel nicer..
Thanks
I managed to root it for now, using magisk_manager.apk and a boot.img, I extracted from a file named "TB-8505F_S100133_200316_BMP.zip" (which is the latest firmware for the M8-8085F)
am unable to find any TWRP for the device.
but at least: got root now.
OTG and Charge Simultaneously
Hello,
I recently purchased the Lenovo tab m8 to replace the outdated navigation system in my car. I thought that since it came with a dock station that I would be able to connect the otg cable on the micro USB port. However this does not work, if it’s charging on the dock and I connect the OTG it stops charging. Does anyone know how I can die both things simultaneously?
am24901 said:
Hello,
I recently purchased the Lenovo tab m8 to replace the outdated navigation system in my car. I thought that since it came with a dock station that I would be able to connect the otg cable on the micro USB port. However this does not work, if it’s charging on the dock and I connect the OTG it stops charging. Does anyone know how I can die both things simultaneously?
Click to expand...
Click to collapse
Look here: https://www.instructables.com/id/DIY-Cable-to-Use-OTG-and-Simultaneously-Charge-the/
Test
---------- Post added at 08:00 AM ---------- Previous post was at 07:13 AM ----------
Xenograph said:
I managed to root it for now, using magisk_manager.apk and a boot.img, I extracted from a file named "TB-8505F_S100133_200316_BMP.zip" (which is the latest firmware for the M8-8085F)
am unable to find any TWRP for the device.
but at least: got root now.
Click to expand...
Click to collapse
@Xenograph:
Hi, would you care to specify in detail the rooting process used for your tb-8505F?
That would be very much appreciated!
I aquired the tb-8505X (LTE) model myself, but was surprised by not being able to dig up the rooting method specific for this model from the internet for two weeks now.
So far, my attempts to aquire root have got stuck at the initial stage of having my W7-64bit laptop communicate with TB-8505X via (first) ADB (lists the device) and (second) fastboot (no devices or waiting for devices).
My suspicion is that while ADB has at its disposal the correct W7-driver, subsequently fastboot is unable to operate with that driver.
Internet search shows the <fastboot-waiting for devices> to be rather common, but without coherent solution.
Any thoughts welcome, thanks!
Did you enable developer options and and there USB debugging and OEM Unlock?
I only plugged in mt 8505F, typed the command "adb reboot bootloader", waited until Windows installed the drivers and I was good to go.
After this started the root process
Cheers
Tom
Xenograph said:
I managed to root it for now, using magisk_manager.apk and a boot.img, I extracted from a file named "TB-8505F_S100133_200316_BMP.zip" (which is the latest firmware for the M8-8085F)
am unable to find any TWRP for the device.
but at least: got root now.
Click to expand...
Click to collapse
How did you actually root it?
I tried patched boot.img, won't work, tried patched recoevery img the M8 is in a bootloop.
Only boot up after I flashed standard recovery again
Cheers
Tom
tom1807 said:
Did you enable developer options and and there USB debugging and OEM Unlock?
I only plugged in mt 8505F, typed the command "adb reboot bootloader", waited until Windows installed the drivers and I was good to go.
After this started the root process
Cheers
Tom
Click to expand...
Click to collapse
Yes, enabled all three of them.
Then installed the ADB/Fastboot package on W7/X64.
Then the usb driver/drivers (don't know).
Then from the admin CMD adb list devices (returns device name)
Reboot tb8505 into fastboot mode.
adb>fastboot list devices (returns waiting for devices...)
Any other subsequent fastboot command returns the same ''waiting for devices''.
Could be this is better attempted from W10,Ios or linux.
Any thoughts? cheers!
I think its a driver problem, which adb/fastboot package did you install?
When you are in fastboot and you open your device manager, any device which shows an exclamation mark?
Cheers
Tom
tom1807 said:
I think its a driver problem, which adb/fastboot package did you install?
When you are in fastboot and you open your device manager, any device which shows an exclamation mark?
Cheers
Tom
Click to expand...
Click to collapse
adb-setup-1.4.3. (okt 10th 2015)
device manager: shows as Alcatel ADB device>Lenovo Android Interface (upon usb connection). No exclamation marks.
From CMD C:\adb>adb devices -l
returns
HA12A76E device product: Lenovo TB_8505X-EEA model:Lenovo_TB_8505X device:8505X
Disconnecting usb & rebooting 8505X into fastboot mode, reconnecting usb:
device manager shows Alcatel ADB Device>Android ADB Interface (sic) (without having changed drivers manually). No exclamation marks, btw.
Subsequently
C:\adb>fastboot devices
(returns nothing)
C:\adb>fastboot reboot
returns < waiting for device >
Reboot 8505X from fastboot mode by pressing power button >20 seconds.
Device manager shows Lenovo Android Interface again.
8505X shows usb debugging options back at 'No data transfer' again, which does that every reboot, so I reselect connect as Media device or as Camera after every reboot.
Q... said:
adb-setup-1.4.3. (okt 10th 2015)
device manager: shows as Alcatel ADB device>Lenovo Android Interface (upon usb connection). No exclamation marks.
From CMD C:\adb>adb devices -l
returns
HA12A76E device product: Lenovo TB_8505X-EEA model:Lenovo_TB_8505X device:8505X
Click to expand...
Click to collapse
Haven't used these, I just used the which Windows (in my case wW10) downloaded
Disconnecting usb & rebooting 8505X into fastboot mode, reconnecting usb:
device manager shows Alcatel ADB Device>Android ADB Interface (sic) (without having changed drivers manually). No exclamation marks, btw.
Subsequently
C:\adb>fastboot devices
(returns nothing)
C:\adb>fastboot reboot
returns < waiting for device >
Click to expand...
Click to collapse
I am assuming the device shows it is in fastboot mode, its listed in Device Manager under Android Phone(?) as ADB Interface
After reboot it is listed fro me under USB Devices as ADB Interface. In fastboot boot the driver is from Mediatek, in working mode, the driver is from Microsoft
8505X shows usb debugging options back at 'No data transfer' again, which does that every reboot, so I reselect connect as Media device or as Camera after every reboot.
Click to expand...
Click to collapse
Used Developer Options to set the Default USB configuration to "File Transfer" works as I set it
Cheers
Tom
Installed mediatek drivers for fastboot, to no avail.
Despite setting the usb preferences to file transfer, the 8505X resets that at every unplugging/rebooting to charging via usb/no data transfer, which also could be the problem, as before entering fastboot mode, usb is disconnected.
In fastboot mode no listing under USB devices in my dev mgr, btw.
Dev mgr shows Alcatel ADB Device>Lenovo Android Interface (as before) and moreover Lenovo Tab M8 under Portable devices. That's in normal working mode.
I presume you are on W10?
Regards, Q.
unlocked bootloader; no root
Hi,
managed to unlock the bootloader on TB-8505X by connecting it to an apple mac instead of W7. Worked via ADB and fastboot, without need to install USB drivers manually.
What would be the next advisable step(s) to take in order to achieve root?
I had a look @ the TWRP site, but there was no TWRP recovery offered for the TB8505F/X.
Any thoughts appreciated. Cheers!
Q... said:
Hi,
managed to unlock the bootloader on TB-8505X by connecting it to an apple mac instead of W7. Worked via ADB and fastboot, without need to install USB drivers manually.
What would be the next advisable step(s) to take in order to achieve root?
I had a look @ the TWRP site, but there was no TWRP recovery offered for the TB8505F/X.
Any thoughts appreciated. Cheers!
Click to expand...
Click to collapse
1. Go to Lenovo site and download Rescue and smart assistant. Install and run.
2. On the rescue tab you can download the firmware for your tab (it needs to be connected to the PC).
3. Goto where you downloaded the firmware. In the RomFiles folder find the boot.img file. copy it to your device.
4. Install Magisk Manager on your device. Run and select install. select the option to patch a file and select the boot.img file you copied to your device.
5. markdown the location that magisk shows where it saved the patched file. Copy this file back to your PC.
6. Flash the file to your device with fastboot flash boot <patched file location>
7. reboot your device and run again magisk manager this should install the magisk zip file and you are rooted.
Is there any custom recovery and roms available? This tab is quite awsome
Leboboy19 said:
Is there any custom recovery and roms available? This tab is quite awsome
Click to expand...
Click to collapse
I'm looking for a custom recovery as well.
I am having problems with Fastboot. I tried all the drivers etc. and always end up with:
C:\adb>fastboot devices
(returns nothing)
C:\adb>fastboot reboot
returns < waiting for device >
Any ideas how to connect with Fastboot?
I want to replace my old Mediatek based tablet with one of these.
So i hope that there's a method to invoke Fastboot or Download Mode by other means than ADB.
While on all other devices i have to keep power Button plus vol up or down plus sometimes Menü Button pressed, my Mediatek tablet requires holding vol up or down while attaching the thing via usb, w/o touching power to power up into Fastboot.
lecorbusier said:
I want to replace my old Mediatek based tablet with one of these.
So i hope that there's a method to invoke Fastboot or Download Mode by other means than ADB.
While on all other devices i have to keep power Button plus vol up or down plus sometimes Menü Button pressed, my Mediatek tablet requires holding vol up or down while attaching the thing via usb, w/o touching power to power up into Fastboot.
Click to expand...
Click to collapse
Holding down the down vol while pressing power gets you to Fastboot mode.
That's the common method. Good. On my Acer you need to attach a usb cable even for accessing the stock recovery. But i will dump it anyway, a Tab M8 FHD has been ordered...