Related
Hi!
First off let me say thanks to R_a_z_v_a_n for redirecting me and hope that I'll find my answer here ^^
So I Have this device called HP 7 VoiceTab 1321RA (not with Slate just HP 7 Voicetab), wanting to have a custom recovery then I tried to flash a CWM Custom Recovery for HP Slate 7 VoiceTab because I thought it was the same and ends up bricking my phone. It ends up in a bootloop which only shows HP sign for a few seconds and dead. But I managed to find out that I can access the recovery menu (or so I thought it is), but the options was choosing between Fastboot Mode, Normal Boot, Recovery Mode, and VART Mode.
I tried to enter Fastboot Mode before and tried to access it via PC but somehow I can't find the device by entering adb devices and fastboot devices. Anyways, I have downloaded a stock update.zip for it but not the original KitKat one which I get from the first time I bought it but rather the JB ones. I think by flashing this would help me recover the device but the only problem is I don't know which method should I use to Flash it. Since I don't have the Stock Recovery or ANY kind of recovery at all, I guess I'm stuck. And it won't start to the home page so I can't set the USB debugging options. Please guide me through this >.<
Thanks a lot!
Been fighting with it for 2 days now and still no result came.
So here's the update so far....
I tried on my other device in order to understand how my PC reads ADB and now I kinda gets it. But the problem is now can't get the device to enable USB Debugging because I can't access options at all.
Secondly, since I left it on for the night because charging seems to trigger the bootloop too, now I can't access the fastboot mode like I was last night. And it constantly repeating this sequence: [battery scene with the "charging battery" symbol] > [HP Powered by Android screen] repeated for 2-3 times > [low battery need charging screen] > repeat. And once I tried to connect to the PC, it goes to the same sequence too. When I tried to access the boot options (the screen which displays Fastboot Mode, Normal Boot, Recovery Mode, and UART Mode which I mention in Thread Starting post), it shows the low battery need charging scene and then repeating the same sequence as mentioned above.
I seem to figure out how to fix this but I still can't manage to access the fastboot mode yet. Will give update once I can try to.
Anyone can help me on this?
Thanks a lot!
Update!
Somehow with a little tweaking and stripping the device, I managed to solve the charging problems. Will update on this once my problem finished.
Jump out from the frying pan and into the fire so they say, I ran into another problem. Finally managed to get into fastboot mode, the devices manager reads it as an Android Device>ROMaster ADB device like the other device I tried to connect while in ADB mode and fastboot mode, but somehow CMD cannot read the device as an ADB device or a Fastboot device like the other device did. I tried to uninstall and reinstall the driver and still nothing happens. I tried to find the usb_driver on the internet and it directs me to the update.zip instead. Trying to update the driver via Computer Management but it says the driver is up to date. Now thinking about making an emulator device based on the HP 7 VoiceTab 1321RA but I really have no idea how to make one. Any one have any idea of what should I do next or can guide me through this? At least until the CMD can read the fastboot.
Thanks a lot!
I found my self in a deadlock!
PLEASE HELP :crying:
Could you unbrick yours
What service centre says about that problem i also ran in this problrm but i m trying to go to service centre for that
first off install drivers in your PC as admin
then use the official flashtool to flash ur stock firmware by entering fastboot or flashmode simple as that
@Sunderesh, thanks for the suggestion, however, couldnt get any official flashtool for hp voicetab. Can you suggest one please?
jithinraj said:
@Sunderesh, thanks for the suggestion, however, couldnt get any official flashtool for hp voicetab. Can you suggest one please?
Click to expand...
Click to collapse
Dude urs is a mtk device so sp flash tool should do the trick.... Just don't forget to install correct drivers....run both drivers and flash tool as admin..... Tell me when it's solved k
jithinraj said:
@Sunderesh, thanks for the suggestion, however, couldnt get any official flashtool for hp voicetab. Can you suggest one please?
Click to expand...
Click to collapse
That is what im trying. To tell you urs is a mediatek device the official flashtool is sp flashtool
rikicchi said:
Update!
Somehow with a little tweaking and stripping the device, I managed to solve the charging problems. Will update on this once my problem finished.
Jump out from the frying pan and into the fire so they say, I ran into another problem. Finally managed to get into fastboot mode, the devices manager reads it as an Android Device>ROMaster ADB device like the other device I tried to connect while in ADB mode and fastboot mode, but somehow CMD cannot read the device as an ADB device or a Fastboot device like the other device did. I tried to uninstall and reinstall the driver and still nothing happens. I tried to find the usb_driver on the internet and it directs me to the update.zip instead. Trying to update the driver via Computer Management but it says the driver is up to date. Now thinking about making an emulator device based on the HP 7 VoiceTab 1321RA but I really have no idea how to make one. Any one have any idea of what should I do next or can guide me through this? At least until the CMD can read the fastboot.
Thanks a lot!
Click to expand...
Click to collapse
try to push the update.zip via adb sideload (Choose "update via ADB sideload" on recovery mode)using adb terminal on PC,as long as your tab can access the recovery mode.remember to backup all your data before u do it.
have a try it's 100% work on me
where I can download update.zip file? anyone can help?
rikicchi said:
Update!
Somehow with a little tweaking and stripping the device, I managed to solve the charging problems. Will update on this once my problem finished.
Jump out from the frying pan and into the fire so they say, I ran into another problem. Finally managed to get into fastboot mode, the devices manager reads it as an Android Device>ROMaster ADB device like the other device I tried to connect while in ADB mode and fastboot mode, but somehow CMD cannot read the device as an ADB device or a Fastboot device like the other device did. I tried to uninstall and reinstall the driver and still nothing happens. I tried to find the usb_driver on the internet and it directs me to the update.zip instead. Trying to update the driver via Computer Management but it says the driver is up to date. Now thinking about making an emulator device based on the HP 7 VoiceTab 1321RA but I really have no idea how to make one. Any one have any idea of what should I do next or can guide me through this? At least until the CMD can read the fastboot.
Thanks a lot!
Click to expand...
Click to collapse
can you explain how did you managed to charge the device??? please its a request......jst help me out :crying::crying:
After upgrading to CM 12.1 everything was just fine. Got my tablet to charger and left it there for a while. And then i saw that i was looping.
It's trying to enter recovery (TWRM) "or something like" and restarting.
I' sitting on forum for 3 days already. trying to get some information and did lot's of things. Nothing helps.
Can anyone help me with this somehow? I'm almost crying and losing it (not really, but that what i feel inside)
Please. Any help. I think I've read all forum about this thing.
Thank you.
Do you have the real TWRP (i.e. not Safestrap!) & an unlocked bootloader?
don't think so. or better say i'm not sure about it. how can i check?
Edit:
i can run adb and after command "adb devices" it shows serial number and status: recovery.
i can use the command adb reboot-bootloader which puts me in fastboot mode. but then i try adb devices and have nothing there.
also, any command like "fastboot...." gets me to "waiting for device" and nothing more.
I tried two different computers. all ports. all cables that i've found.
Edit 2:
also after command "adb shell" i ca see "~ # ←[6n" and i can put there only reboot command
Well, first of all CM12.1 requires TWRP & an unlocked bootloader, if you don't have those, flashing CM12.1 was a bad idea.
So what happens during boot? Do you see the Safestrap logo and had to either wait 10 seconds or press continue to boot? Can you enter Safestrap there by pressing Recovery? Which Safestrap version is it (if any)?
The real TWRP can be accessed by pressing and holding Volume up, then pressing and holding Power, release both when the grey Kindle Fire logo appears on screen.
As having TWRP is a key requirement here, it's important to figure out what you really have (either Safestrap or TWRP).
And do NOT do a factory reset in amazon's stock recovery with Safestrap installed! Will brick the HDX!
As @Davey126 mentioned here you can check whether the bootloader ist unlocked by opening a fastboot prompt (i.e. DOS box, then change dir to your adb directory), then enter:
fastboot -i 0x1949 oem idme
You will only get a response if unlocked.
If you use Windows and get the waiting for device fastboot issue, try these drivers, could be a pain in the ass to install them in Win8(.1)/Win10 x64 though. And note that you probably need to (re-)install the original Amazon Drivers again to get the HDX noticed in Explorer in order to get files copied it.
Cl4ncy said:
Well, first of all CM12.1 requires TWRP & an unlocked bootloader, if you don't have those, flashing CM12.1 was a bad idea.
So what happens during boot? Do you see the Safestrap logo and had to either wait 10 seconds or press continue to boot? Can you enter Safestrap there by pressing Recovery? Which Safestrap version is it (if any)?
The real TWRP can be accessed by pressing and holding Volume up, then pressing and holding Power, release both when the grey Kindle Fire logo appears on screen.
As having TWRP is a key requirement here, it's important to figure out what you really have (either Safestrap or TWRP).
And do NOT do a factory reset in amazon's stock recovery with Safestrap installed! Will brick the HDX!
As @Davey126 mentioned here you can check whether the bootloader ist unlocked by opening a fastboot prompt (i.e. DOS box, then change dir to your adb directory), then enter:
fastboot -i 0x1949 oem idme
You will only get a response if unlocked.
If you use Windows and get the waiting for device fastboot issue, try these drivers, could be a pain in the ass to install them in Win8(.1)/Win10 x64 though. And note that you probably need to (re-)install the original Amazon Drivers again to get the HDX noticed in Explorer in order to get files copied it.
Click to expand...
Click to collapse
Also verify you have a Kindle HDX ... not HD or generic Fire.
the fastboot command got me still only 1 message "waiting for device"
Tried to install drivers. While looping, in device manager, i can see "Fire devices: Android composite ADB Interface"
and "Portable devices: MTP USB Device"
If i enter fastboot mode, gets me to "Other devices: Unknown device" and i just cant figure out how to install the drivers. Tried to download some stuff. plugged, unplugged.
Edit:
After some work done with drivers, i input adb kill-server and adb devices and get "Serial Number Unauthorized"
So maybe i should change word "work" to "messing" with driver
what do i do from here... is there any live chat for it maybe? or i can call someone?
Well, do you have the real TWRP or Safestrap? Can you enter recovery?
well, only thing i get it's blue screen and "Teamwin" and after like 3-4 second restarts and go on looping same "Teamwin"
oreal crast said:
well, only thing i get it's blue screen and "Teamwin" and after like 3-4 second restarts and go on looping same "Teamwin"
Click to expand...
Click to collapse
Still haven't answered Safestrap or native TWRP query (you should know). Do this:
- long press power until device shuts off
- restart device with power button (only)
- detail the 1st, 2nd and 3rd screens you see
If you do not have native TWRP (with unlocked bootloader) you likely borked your device with the installation of CM 12.1. Generally not repairable.
oreal crast said:
well, only thing i get it's blue screen and "Teamwin" and after like 3-4 second restarts and go on looping same "Teamwin"
Click to expand...
Click to collapse
Ok, that should be the real TWRP, the Safestrap screen looks different.
This could mean you've TWRP installed, but the bootloader is locked. So I'd suggest to unlock the bootloader, you can't screw up anything, and can try this nice tool.
Cl4ncy said:
Ok, that should be the real TWRP, the Safestrap screen looks different.
This could mean you've TWRP installed, but the bootloader is locked. So I'd suggest to unlock the bootloader, you can't screw up anything, and can try this nice tool.
Click to expand...
Click to collapse
To check if your bootloader is unlocked (assumes you previously unlocked and still have the prerequisite software installed on host):
- power down device
- press vol-down + power; release both keys when "[fastboot]" prompt appears
- tether your device
- open a command prompt (assuming Windows)
- issue command: fastboot -i 0x1949 oem idme ?
- you will only get a response if bootloader is unlocked
If the (Windows) host displays "<waiting for device>":
- press <ctrl>-c to break wait
- start device manager (different window)
- located device with explanation mark (likely under "portable devices")
- right click -> update driver software -> browse my computer... -> Let me pick...
- select driver from list (ideally one that contains the words 'fastboot'); might have to try a few
- reissue above command
Bit of a PiTA ... might be easier to simply try the one click unlock tool as there is no additional risk to your device. It will either work or not.
I guess i'll check it only next week. Leaving all this things for the weekend.
I'll keep you updated guys.
Anyway, i really appreciate your help! Thank you so much for helping
same problem
Good evening, I am very interested by the article, in fact, I currently have the same problem and I began to be very sad. all stages cited by oreal Crast are similar to the ones I tested. when I enter the command prompt 'adb devices' I get the number of my tablet and status RECOVERY.
'adb shell' gives me "~ # ← [6n"
I even re installs the uboot, boot.img and TWRP freedom by following the steps in one tech site
but at reboot, by entering the command "fastboot oem recovery 0x1949 -i 'my tablet again has a boot loop on teamwin.
i want to resolve very fast this problem because i need my tablet urgently:crying:
ps: I don't think that I can meet these problems because after having bought my tablet to a friend (the tablet possessed CyanogenMod 11 android 5.0.1 I think) I did a factory reset . it is from this manipulation on my tablet reboot teamwin.
thank you for your helping
stephio said:
Good evening, I am very interested by the article, in fact, I currently have the same problem and I began to be very sad. all stages cited by oreal Crast are similar to the ones I tested. when I enter the command prompt 'adb devices' I get the number of my tablet and status RECOVERY.
'adb shell' gives me "~ # ← [6n"
I even re installs the uboot, boot.img and TWRP freedom by following the steps in one tech site
but at reboot, by entering the command "fastboot oem recovery 0x1949 -i 'my tablet again has a boot loop on teamwin.
i want to resolve very fast this problem because i need my tablet urgently:crying:
ps: I don't think that I can meet these problems because after having bought my tablet to a friend (the tablet possessed CyanogenMod 11 android 5.0.1 I think) I did a factory reset . it is from this manipulation on my tablet reboot teamwin.
thank you for your helping
Click to expand...
Click to collapse
I assume you have an unlocked bootloader and were running 'native' twrp (not Safestrap) when the problem occured. Unfortunately, there is no known 'quick fix' recovery from this failure scenario (boot looping on teamwin spash screen) as you have tried to reinstall twrp without success. Someone very talented with android might be able to unravel the problem. Best guess (and it is only a guess) is the recovery partition became damaged to such an extent it the contents can not be replaced without performing a low level format/reset of your device.
Some curiosities:
- Android 5.0.1 and CM11? (impossible combination)
- TWRP freedom? (not supported on HDX)
Are your certain your device is a HDX and not some other model?
same problem
for android version I listed above, I do not know exactly because I have used my tablet a day without really paying attention to it but I think I saw the android 5.0.1 but regarding cyanogen, I just imagined it based on readings on the web.
for this is my tablet AMAZON KINDLE FIRE with a HD 8.9 and the TWRP I recently flashed, I got through the website wikicyanogenmod in the "on how to install cyanogen hd amazon kindle 8.9.
I can not post a link because I am new to the forum so I can only quote the sites where I could download my data.
* I really count on your help to all.
stephio said:
for android version I listed above, I do not know exactly because I have used my tablet a day without really paying attention to it but I think I saw the android 5.0.1 but regarding cyanogen, I just imagined it based on readings on the web.
for this is my tablet AMAZON KINDLE FIRE with a HD 8.9 and the TWRP I recently flashed, I got through the website wikicyanogenmod in the "on how to install cyanogen hd amazon kindle 8.9.
I can not post a link because I am new to the forum so I can only quote the sites where I could download my data.
* I really count on your help to all.
Click to expand...
Click to collapse
You still haven't made it clear whether you have an HD or HDX model.
You're on the HDX forum, but you're talking about documentation on the CyanogenMod wiki for the HD 8.9.
The problem likely stems from the fact that you flashed a recovery for the wrong device.
same problem
EncryptedCurse said:
You still haven't made it clear whether you have an HD or HDX model.
You're on the HDX forum, but you're talking about documentation on the CyanogenMod wiki for the HD 8.9.
The problem likely stems from the fact that you flashed a recovery for the wrong device.
Click to expand...
Click to collapse
I searched the web and I have definitely amazon kindle fire HD 8.9 because even his appearance differs from the HDX 8.9.
no I do not really think the problem comes from the data flash HD 8.9 (wikicyanogenmod) because I flashed the data after doing a factory reset without actually knowing that this would pose a problem with amazon tablets.
the tablet was working well but I was unable to connect to the wifi. I thought it would be nice to change rom and install a suitable and stable rom for my tablet, but my operation I was surprised because I had never heard of this kind of problems caused by an factory reset
I have searched a lot on google and xda and havn't found an answer to my issue. Either I'm searching for the wrong thing or I have a very unique problem.
My basic problem is on two Nabi 2's I can't access the bootloader in order to be able to fastboot TWRP (or any other recovery). It just perpetually hangs.
Both tablets boot just fine. Both tablets are on 1.9.37. Both tablets can be factory wiped via the stock recovery.
Both tablets were rooted via TWRP 2.3.3.0 a few years ago in order to install gapps. I wanted to be able to upgrade the tablets to JB when it came out so I used Nabilablite to "return to stock". I followed all of the prompts and it appeared as though everything worked as desired. I downloaded the OTA update told it to install and never looked at the version again...I just assumed it installed. Handed the tablets back to the kids and everyone was happy. Apparently all I did was flash the stock recovery because they are still rooted and have gapps after several factory resets.
Now (a year later) I have realized I was a dufas and didn't actually effect the change I wanted.
If I hold Vol+ & Pwr buttons it loads to the recovery/boot menu with "boot normally" "fastboot protocol" "recovery kernal" and "forced recovery". If I boot normal, the tablet works fine but I can't update via OTA.
If I choose fastboot protocol it just hangs...for ever...HOW DO I FIX THIS!?!?!
If I choose recovery kernal it loads the stock recovery but still wont install any update OTA or otherwise, even from the sd card.
If I choose forced recovery nothing happens, it also appears to just hang.
If I hold Vol- & Pwr button the nabi logo flashes then the device turns off.
If I hold Vol+ & Vol- & Pwr buttons it appears to be the same as just Vol+ & Pwr.
With the tablet on and fully booted I can see it via ADB. I tried using the adb restart bootloader. The tablet reboots but then just hangs never actually loading the boot loader...
I found http://forum.xda-developers.com/showthread.php?t=2587543. But aicjofs mentions seeing a bootloader issue once before.
Usually when it hangs at the Nabi logo it means you don't have the USB cable plugged in or that the fastboot driver is not installed.(Check device manager and see if fastboot driver is installed/no exclimation point). If that's not the issue then it's the bootloader which I have only seen one person have that issue. Depending on which OTA's you have ran there was an update to a Jellybean bootloader so it's possible. That can be fixed with nvflash or placing the bootloader blob in the staging partition.
Also you can always get recovery back without fastboot in Android by dd'ing the recovery over.
For example if the recovery image is on the internal SD
dd if=/data/media/recovery.img of=/dev/block/platform/sdhci-tegra.3/by-name/SOS
Click to expand...
Click to collapse
I have NO idea what dd'ing the recover over is...
Thank you for any help fixing this.
P.S. I have a 3rd tablet that I also used TWRP 2.3.3.0 on to root and install gapps with. I did NOT use nabilablite on that tablet to return to stock. Yesturday I used fastboot to flash TWRP 2.6(something) to flash a JB OTA update which worked fine. It was also able to download and install every other OTA update all the way to the most recent KK with no problems...
najman9 said:
I have searched a lot on google and xda and havn't found an answer to my issue. Either I'm searching for the wrong thing or I have a very unique problem.
My basic problem is on two Nabi 2's I can't access the bootloader in order to be able to fastboot TWRP (or any other recovery). It just perpetually hangs.
Both tablets boot just fine. Both tablets are on 1.9.37. Both tablets can be factory wiped via the stock recovery.
Both tablets were rooted via TWRP 2.3.3.0 a few years ago in order to install gapps. I wanted to be able to upgrade the tablets to JB when it came out so I used Nabilablite to "return to stock". I followed all of the prompts and it appeared as though everything worked as desired. I downloaded the OTA update told it to install and never looked at the version again...I just assumed it installed. Handed the tablets back to the kids and everyone was happy. Apparently all I did was flash the stock recovery because they are still rooted and have gapps after several factory resets.
Now (a year later) I have realized I was a dufas and didn't actually effect the change I wanted.
If I hold Vol+ & Pwr buttons it loads to the recovery/boot menu with "boot normally" "fastboot protocol" "recovery kernal" and "forced recovery". If I boot normal, the tablet works fine but I can't update via OTA.
If I choose fastboot protocol it just hangs...for ever...HOW DO I FIX THIS!?!?!
If I choose recovery kernal it loads the stock recovery but still wont install any update OTA or otherwise, even from the sd card.
If I choose forced recovery nothing happens, it also appears to just hang.
If I hold Vol- & Pwr button the nabi logo flashes then the device turns off.
If I hold Vol+ & Vol- & Pwr buttons it appears to be the same as just Vol+ & Pwr.
With the tablet on and fully booted I can see it via ADB. I tried using the adb restart bootloader. The tablet reboots but then just hangs never actually loading the boot loader...
I found http://forum.xda-developers.com/showthread.php?t=2587543. But aicjofs mentions seeing a bootloader issue once before.
I have NO idea what dd'ing the recover over is...
Thank you for any help fixing this.
P.S. I have a 3rd tablet that I also used TWRP 2.3.3.0 on to root and install gapps with. I did NOT use nabilablite on that tablet to return to stock. Yesturday I used fastboot to flash TWRP 2.6(something) to flash a JB OTA update which worked fine. It was also able to download and install every other OTA update all the way to the most recent KK with no problems...
Click to expand...
Click to collapse
EDIT: OOOPPS. I didn't see this was in the XDA Assist section. I'm not suppose to answer questions(I was just searching for Nabi questions and didn't notice this was XDA assist), dedicated XDAers just point you in the right direction in this section. Please ask the question again in the Nabi2 section and I'l come help you. http://forum.xda-developers.com/nabi-2
This might help answer some questions http://forum.xda-developers.com/nabi-2/general/nabi-information-t3229119
If it just hangs at fastboot protocol then the USB connection isn't good or fastboot driver isn't installed most of the time. Can you verify fastboot shows up in device manager?(I know the 3rd tabet worked OK) .
Nabilabite doesn't do anything that should change the bootloader, and fastboot should still work as it did before.
dd'ing recovery over means that you use the root access you have in Android to flash the recovery partition instead of using fastboot. IT's just another way of getting the TWRP recovery on the tablet.
The stock recovery won't install the OTA because when you added Gapps it changed some fies and the OTA sees those files as invalid and will fail.
Forced recovery always looks blank screen. It's waiting for you to give it a bootloader to run(beyond the scope here).
You should be able to get back on track once you have TWRP loaded. It's one of 3 things. Bad USB connection, fastboot driver not installed right, bootloader damage. Check the first 2 issues despite the fact the 3rd tablet had no such problems.
One of the XDA smart guys fixed my error of posting this in the wrong section.
I'm running Windows 7 Ultimate and have installed and re-installed the drivers several times. When the tablet's are fully booted ADB has a good connection and sucessfully sends the command to reboot. So I don't believe there is a driver or USB cable error...
When the tablets hang on the fastboot protocol my computer makes the usb connecting noise but fails to install the drivers...
When I hit forced recovery I hear the unrecognized USB device sound...
These two things make me think I don't have the proper drivers installed...but I don't understand how the driver's work when the tablet is booted but not when trying to access the boot loader.
It appears as though I'm going to have to try the dd method if you are able to point me in that direction please.
EDIT: Now I'm thinking I really DON'T have the fastboot drivers installed. I just plugged the 2nd tablet that hands on the fastboot menu and fastboot failed. I also booted the tablet completly, the adb driver's installed correctly but the fastboot driver's did not...I have installed the 64 bit driver's included with nabilablite. I can't find any actual other downloads. The 15 second ADB installer didn't change anything...
najman9 said:
One of the XDA smart guys fixed my error of posting this in the wrong section.
I'm running Windows 7 Ultimate and have installed and re-installed the drivers several times. When the tablet's are fully booted ADB has a good connection and sucessfully sends the command to reboot. So I don't believe there is a driver or USB cable error...
When the tablets hang on the fastboot protocol my computer makes the usb connecting noise but fails to install the drivers...
When I hit forced recovery I hear the unrecognized USB device sound...
These two things make me think I don't have the proper drivers installed...but I don't understand how the driver's work when the tablet is booted but not when trying to access the boot loader.
It appears as though I'm going to have to try the dd method if you are able to point me in that direction please.
EDIT: Now I'm thinking I really DON'T have the fastboot drivers installed. I just plugged the 2nd tablet that hands on the fastboot menu and fastboot failed. I also booted the tablet completly, the adb driver's installed correctly but the fastboot driver's did not...I have installed the 64 bit driver's included with nabilablite. I can't find any actual other downloads. The 15 second ADB installer didn't change anything...
Click to expand...
Click to collapse
Uninstall those nablablite and try this one. http://forum.xda-developers.com/showpost.php?p=62826514&postcount=2639
Or look at the other options in section 4 here http://forum.xda-developers.com/nabi-2/general/nabi-information-t3229119
Device: Nexus 9 (Wi-Fi), Bootloader Unlocked
Computer: Windows 10 (Bootcamp on a Retina MacBook Pro)
After and unsuccessful attempt to install CM 12.1 on my Nexus 9 (Wi-Fi) using TWRP, I tried using this method to return to stock:
http://forum.xda-developers.com/nexus-9/general/guide-nexus-9-to-stock-guide-unbrick-t2975668/
I thought it had worked perfectly, but the tablet still would not boot. I went back and looked at the command prompt log and realized I had made a grave error: I had flashed everything except for the system image. I re-entered fastboot in an attempt to fix it by flashing the system, but now the tablet will not connect to my computer at all. I have tried to remove and reinstall the ADB drivers, but it doesn't show up at all in Device Manager. I tried booting into recovery via fastboot, but got an image of the android mascot knocked-out with an exclamation point, presumably since I over-wrote it with the method above.
Any ideas on how to restore the fastboot/adb connection with my computer? If I can accomplish that I can presumably just flash the system image and that would restore the stock ROM.
Any insight at all would be much appreciated.
dgindra said:
Device: Nexus 9 (Wi-Fi), Bootloader Unlocked
Computer: Windows 10 (Bootcamp on a Retina MacBook Pro)
After and unsuccessful attempt to install CM 12.1 on my Nexus 9 (Wi-Fi) using TWRP, I tried using this method to return to stock:
http://forum.xda-developers.com/nexus-9/general/guide-nexus-9-to-stock-guide-unbrick-t2975668/
I thought it had worked perfectly, but the tablet still would not boot. I went back and looked at the command prompt log and realized I had made a grave error: I had flashed everything except for the system image. I re-entered fastboot in an attempt to fix it by flashing the system, but now the tablet will not connect to my computer at all. I have tried to remove and reinstall the ADB drivers, but it doesn't show up at all in Device Manager. I tried booting into recovery via fastboot, but got an image of the android mascot knocked-out with an exclamation point, presumably since I over-wrote it with the method above.
Any ideas on how to restore the fastboot/adb connection with my computer? If I can accomplish that I can presumably just flash the system image and that would restore the stock ROM.
Any insight at all would be much appreciated.
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Hello,
I have reported this thread to be moved to right Q&A section in order to get expertise help.
-Vatsal
Have you ever tried to connect your tablet to another computer?
Turns out I forgot to actually press the button in fastboot that enables the USB connection (I feel even more stupid now). Was able to return to stock, albeit with the "This device is corrupt" message during boot.
dgindra said:
Turns out I forgot to actually press the button in fastboot that enables the USB connection (I feel even more stupid now). Was able to return to stock, albeit with the "This device is corrupt" message during boot.
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I got the same message yesterday after I returned to stock kernel from a custom one. What I did to get rid of that warning message was to flash all img file(boot, cache, recovery, system, vendor) in MMB29K factory image. (Bootloader is optional) [After that I also performed a factory reset but this step might be unnecessary, do it if the message still exist after flashing stock images] If you don't like that warning you can try these procedures.
I attempted to install the custom OS, Asteroid, to my Zenwatch 2 (Sparrow) I followed the directions and now the watch will not boot, it is stuck at the Asus screen in a loop. I downloaded the recovery image, but I can not flash it do to Windows not recognizing the watch is connected. ADB gives me the error Device '(null)' not found. I have checked the device manager and there is nothing showing as an error (yellow !). Is there anyway I can recover from this?
jnelsoninjax said:
I attempted to install the custom OS, Asteroid, to my Zenwatch 2 (Sparrow) I followed the directions and now the watch will not boot, it is stuck at the Asus screen in a loop. I downloaded the recovery image, but I can not flash it do to Windows not recognizing the watch is connected. ADB gives me the error Device '(null)' not found. I have checked the device manager and there is nothing showing as an error (yellow !). Is there anyway I can recover from this?
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go into fastboot mode and reflash your system.
dont work with fastboot / adb / root when you have no idea what youre doing!
matze19999 said:
go into fastboot mode and reflash your system.
dont work with fastboot / adb / root when you have no idea what youre doing!
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The problem is that the watch is not being detected by Windows, therefore I am unable to reflash it, I clearly stated this in my original post.
jnelsoninjax said:
The problem is that the watch is not being detected by Windows, therefore I am unable to reflash it, I clearly stated this in my original post.
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You said windows can't detect the watch in adb mode? What about the fastboot mode?
matze19999 said:
You said windows can't detect the watch in adb mode? What about the fastboot mode?
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No, issuing the command: Fastboot devices shows nothing connected at all(the same goes for adb). It also does not show up in the windows device manager.
jnelsoninjax said:
No, issuing the command: Fastboot devices shows nothing connected at all(the same goes for adb). It also does not show up in the windows device manager.
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Did you enter the fastboot mode?
matze19999 said:
Did you enter the fastboot mode?
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The watch is showing CSC Fastboot Mode! So I would assume that it is in Fastboot mode
Were you able to get this fixed?
No, I have but been able to resolve this issue. It is not being recognized by Windows, therefore I can't flash the original os back to it.
Did you have TWRP installed prior to the failed flash?
CVertigo1 said:
Did you have TWRP installed prior to the failed flash?
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No
I may have a way to get it working. I've had issues where Windows would not recognize a device, until I installed a cocktail of random drivers that eventually worked. What version of Windows are you running?
CVertigo1 said:
I may have a way to get it working. I've had issues where Windows would not recognize a device, until I installed a cocktail of random drivers that eventually worked. What version of Windows are you running?
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I am running Windows 10 X64 build 1803
If you have the space, follow this: https://docs.microsoft.com/en-us/windows/wsl/install-win10
It allows you to run non-graphical Ubuntu on top of Windows. I've found sometimes my Windows 10 PC won't recognize things with adb or fastboot, but it works great in Ubuntu Bash. If you're familiar with Ubuntu at all, then it'll be a breeze to figure it out. If not, it's a pretty straight forward learning curve. It's also child's play to get adb and fastboot working right in Ubuntu, whereas it can be finicky in Windows.
Another alternative is to make a Linux Live CD using a USB drive, but that is a much more temporary solution.
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If none of those sound appealing, then I'd suggest deleting all drivers having to do with adb or fastboot, and start fresh by installing everything with this https://forum.xda-developers.com/showthread.php?t=2588979
CVertigo1 said:
If you have the space, follow this: https://docs.microsoft.com/en-us/windows/wsl/install-win10
It allows you to run non-graphical Ubuntu on top of Windows. I've found sometimes my Windows 10 PC won't recognize things with adb or fastboot, but it works great in Ubuntu Bash. If you're familiar with Ubuntu at all, then it'll be a breeze to figure it out. If not, it's a pretty straight forward learning curve. It's also child's play to get adb and fastboot working right in Ubuntu, whereas it can be finicky in Windows.
Another alternative is to make a Linux Live CD using a USB drive, but that is a much more temporary solution.
---------- Post added at 10:17 AM ---------- Previous post was at 10:16 AM ----------
If none of those sound appealing, then I'd suggest deleting all drivers having to do with adb or fastboot, and start fresh by installing everything with this https://forum.xda-developers.com/showthread.php?t=2588979
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OK, I will mess around and see what happens! I will have to do it tomorrow, but I will play around and see what happens!
Let me know how it goes and I'll walk you through it some more.
Any luck?
Sorry for the long time to reply. I installed ubuntu in window and installed the appropriate packages, however both ADB and Fastboot show nothing connected, even though the device is in CSC Recovery mode. Is there anything else I can try?
I actually tried playing with a few things on one of my computers the other day to try tracking this down. I was running into an issue where adb worked normally when the watch booted, but it would not work in recovery, and fastboot did not work either. Here is how I fixed it. Open up device manager in Windows and delete any driver pertaining to Android phones or adb. In my example, an Asus driver was causing the problem. I deleted that and reinstalled the generic Google drivers using the 15 second adb/fastboot installer that I posted in this thread. After restarting the computer, adb works perfect in Android and recovery, and fastboot works perfect as well.
TL/DR Delete all Android adb drivers in Windows, then run the 15 second adb installer that I posted in this thread, restart, and get your watch back to normal.
Assuming your bootloader is unlocked, you can flash everything I have posted here to get it running. https://forum.xda-developers.com/zenwatch-2/development/sparrow7-1-1debloat-rom-t3800067 If the bootloader is not unlocked, fastboot oem unlock will do it.
CVertigo1 said:
I actually tried playing with a few things on one of my computers the other day to try tracking this down. I was running into an issue where adb worked normally when the watch booted, but it would not work in recovery, and fastboot did not work either. Here is how I fixed it. Open up device manager in Windows and delete any driver pertaining to Android phones or adb. In my example, an Asus driver was causing the problem. I deleted that and reinstalled the generic Google drivers using the 15 second adb/fastboot installer that I posted in this thread. After restarting the computer, adb works perfect in Android and recovery, and fastboot works perfect as well.
TL/DR Delete all Android adb drivers in Windows, then run the 15 second adb installer that I posted in this thread, restart, and get your watch back to normal.
Assuming your bootloader is unlocked, you can flash everything I have posted here to get it running. https://forum.xda-developers.com/zenwatch-2/development/sparrow7-1-1debloat-rom-t3800067 If the bootloader is not unlocked, fastboot oem unlock will do it.
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OK, I got windows to see the watch via fastboot and I downloaded the image that you posted (bloat free) now the watch started to boot, but so far it is just showing spinning dots, and has been for ~5 minutes or so, is this normal?