[Completed] Fastboot/recovery on Bay Trail - XDA Assist

Hi guys!
Is there any way to put Bay Trail based device into recovery/fastboot using USB keyboard?
My device (Chuwi V99i) has just 2 physical buttons: power and vol- (pinhole under the camera).
Current observations:
If I'll start device while vol- is pressed, then it was entering non-functioning fastboot mode i.e. device was seen by fastboot utility but any command failing instantly.
If I'll start device while vol+ on usb keyboard is pressed, then it was booting safe mode.
If I'll issue "adb reboot bootloader" then device was entering fully functioning droidboot.
If I'll issue "adb reboot recovery" then device was entering non-functioning recovery ("No Command" screen without any reaction to vol- or power button).
I was also able to reboot from droidboot/recovery using ctrl+alt+del on usb-keyboard.
If you can help me, I would really appreciate that!

Am1G0 said:
Hi guys!
Is there any way to put Bay Trail based device into recovery/fastboot using USB keyboard?
My device (Chuwi V99i) has just 2 physical buttons: power and vol- (pinhole under the camera).
Current observations:
If I'll start device while vol- is pressed, then it was entering non-functioning fastboot mode i.e. device was seen by fastboot utility but any command failing instantly.
If I'll start device while vol+ on usb keyboard is pressed, then it was booting safe mode.
If I'll issue "adb reboot bootloader" then device was entering fully functioning droidboot.
If I'll issue "adb reboot recovery" then device was entering non-functioning recovery ("No Command" screen without any reaction to vol- or power button).
I was also able to reboot from droidboot/recovery using ctrl+alt+del on usb-keyboard.
If you can help me, I would really appreciate that!
Click to expand...
Click to collapse
Hi
Thank you for using XDA Assit
Can't seem to find any relevant thread regarding the device you have concerns with
Would like to suggest instead to post this again here
http://forum.xda-developers.com/android/help
Thank you..

Ok, thank you!

Am1G0 said:
Ok, thank you!
Click to expand...
Click to collapse
Hi
you may wanna check this threas as well
http://forum.xda-developers.com/and...android-devices-root-temp-cwm-t2975096/page31

Related

[Q] easiest way to boot into bootloader/recovery

okay guys looking for the easiest way to boot into recovery / bootloader
would prefer both physical on the phone and adb commands
if you would be so kind
Volume down+power = BOOTLOADER
adb commands are the same across nearly every device
adb reboot recovery
adb reboot bootloader
Pirateghost said:
Volume down+power = BOOTLOADER
adb commands are the same across nearly every device
adb reboot recovery
adb reboot bootloader
Click to expand...
Click to collapse
thanks, i never had to use adb with my captivate or infuse so i figured i would ask .
also for some reason sometimes volume down +power wont work to get me into the bootloader.
I use Quickboot...it has many reboot options, including reboot into Bootloader and Reboot into Recovery.
Another simple way is to pick restart from the power menu then just hold volume down as the phone restarts.
Sent from my HTC One X using Tapatalk 2
The_Zodiac said:
thanks, i never had to use adb with my captivate or infuse so i figured i would ask .
also for some reason sometimes volume down +power wont work to get me into the bootloader.
Click to expand...
Click to collapse
You have to hold volume down the entire time until it gets to the bootloader. On the Captivate you could release it as soon as the splash screen came up but on this HOX you have to continue holding.
The_Zodiac said:
also for some reason sometimes volume down +power wont work to get me into the bootloader.
Click to expand...
Click to collapse
If the phone is powered off when you want to go into bootloader, you have to make sure "Fast boot" in Settings>Power is unchecked.
Going into bootloader using power+vol down requries the phone to be fully powered off or a reboot. Fast boot is actually just a deep sleep mode and not a full power down.
---------- Post added at 10:42 AM ---------- Previous post was at 10:37 AM ----------
BBock9 said:
Another simple way is to pick restart from the power menu then just hold volume down as the phone restarts.
Click to expand...
Click to collapse
That method never seems to work for me. Holding the vol down immediately after selecting restart, or even holding the vol down while picking restart, it just boots normally.
I have to power down (with fast boot unselected in Settings>Power) then hold vol down while pressing power button, in order to get to bootloader.
Pirateghost said:
Volume down+power = BOOTLOADER
adb commands are the same across nearly every device
adb reboot recovery
adb reboot bootloader
Click to expand...
Click to collapse
I am trying to boot my samsung captivate into the boot loader. I've tried the physical key combos mentioned in this thread and there not working.
I tried using ./adb reboot bootloader but the phone does a regular reboot.
I am able to get a splash screen with that says "Download" and has a picture of the Android shoveling, by pressing both volumes and plugin in the power.
But if i do this, the device is not visible when I used ./adb devices
The question is how can i get this to reboot into the bootloader preferably from the terminal so that I can unlock it and install CWM.
Any advice would be much appreciated!
Good job finding the wrong phones forum and digging up an old thread to post on
Sent from my HTC One XL
leptone said:
I am trying to boot my samsung captivate into the boot loader.
Click to expand...
Click to collapse
This forum is specific to the HTC One X/XL. You need to go to the forum specific to the Samsung Captivate. The key sequence is likely different, and getting advice from people with a different device can quite possibly lead get you the incorrect info.
Also, as mentioned above, try not to dig up old threads from 7 months ago.
derp.
wrong thread
Quick question: I'm trying to reboot my android STB in bootloader mode to check its lock/unlock status... Obviously I can't use the Vol Down + Power button in a STB...
So I tried "adb reboot bootloader", which didin't seem to work. I mean, it powered down, then powered up in a screen with the brand's logo, but nothing else happened, and the command "fastboot devices" didn't find any device either (while before that, "adb devices" showed the device normally). Also, I didn't get any unrecognized devices under Device manager which would denote that a new "device" got connected into the system...
I then tried "adb reboot recovery" which works fine...
So what does this situation mean for my STB?

[Q] TF300T Am I bricked?

I tried to root my device. I downloaded the unlocker APK, CWRecovery, adb, fastboot and everything seemed to be going fine. I ran afoul somewhere in the middle of the process and I tried to do a factory reset. And this is where things went really badly. What's happening now is that I'm stuck on the first boot screen. The only thing that is displayed in the "The Device is UnLocked" message in the top left, the ASUS logo in the middle and the NVidia Tegra log at the bottom right. No spinny and definitely not booting.
Before, when I held down the power button and the volume down button, I would get dumped in to a menu where I could select between RCK, Android and Wipe. However, now that isn't working. If I just keep holding down both buttons, the device reboots and I get the same screen. The recovery mode never seems to come up. When I try to use adb or fastboot to see the tablet, this is pretty much what comes up:
jcboget$ ./fastboot devices
jcboget$ ./adb devices
List of devices attached
So my question is this : am I bricked? If yes, my follow up question is this : can I fix this? Or am I pretty much effed?
thnx,
Christoph
Ok, so I finally got my hands on a pin to press the hard reset button and that didn't seem to have any kind of effect. All it did was cause the device to reboot and it again got stuck on the logo screen. My hopes are falling real fast.
thnx,
Christoph
Another thing, I can't even seem to power the tablet down. Pressing the power button does nothing. Holding it down for a while just causes the tablet to reboot (again, only to the ASUS logo). The only way I I'm able to get it powered down (at least, I *think* it's powered down) is by pressing the volume-up button while I press the factory reset button with a pin. Pressing the power button while holding the volume-up caused it just to reboot as it did with holding power and volume-down. Interestingly, holding volume-down and pressing the factory reset button with a pin just caused it to reboot again.
I was thinking (praying, really) that this was causing the tablet to go in to APX mode (as discussed here -- item 4 : http://forum.xda-developers.com/showthread.php?t=2034866) but holding the volume-up while plugging the usb didn't do anything so I'm not sure that's possible.
I'm hoping and praying that I'm not totally effed and I'm hoping someone can offer some input.
thnx,
Christoph
jcboget said:
Another thing, I can't even seem to power the tablet down. Pressing the power button does nothing. Holding it down for a while just causes the tablet to reboot (again, only to the ASUS logo). The only way I I'm able to get it powered down (at least, I *think* it's powered down) is by pressing the volume-up button while I press the factory reset button with a pin. Pressing the power button while holding the volume-up caused it just to reboot as it did with holding power and volume-down. Interestingly, holding volume-down and pressing the factory reset button with a pin just caused it to reboot again.
I was thinking (praying, really) that this was causing the tablet to go in to APX mode (as discussed here -- item 4 : http://forum.xda-developers.com/showthread.php?t=2034866) but holding the volume-up while plugging the usb didn't do anything so I'm not sure that's possible.
I'm hoping and praying that I'm not totally effed and I'm hoping someone can offer some input.
thnx,
Christoph
Click to expand...
Click to collapse
Mine is like this right now holding power and vol+UP turns it off for me. Just gonna watch your thread closely and look for a new motherboard until someone finds solution glgl
http://forum.xda-developers.com/showthread.php?p=44244313 my post is #12
try this. for stuck apx mode there are in the following posts (and threats) some solutions.
gl
Sent from my GT-I9505 using xda app-developers app
Buster99 said:
http://forum.xda-developers.com/showthread.php?p=44244313 my post is #12
try this. for stuck apx mode there are in the following posts (and threats) some solutions.
Click to expand...
Click to collapse
I've seen that post and I tried to do exactly that. My problem is that power+volume-down just reboots the device and power+volume-up doesn't seem to do anything. In fact, it seems like power+volume-up is the only way I can actually power down the device. How can I enter fastboot with the tablet in such a state? How can I get in to APX mode?
thnx,
Christoph
jcboget said:
I've seen that post and I tried to do exactly that. My problem is that power+volume-down just reboots the device and power+volume-up doesn't seem to do anything. In fact, it seems like power+volume-up is the only way I can actually power down the device. How can I enter fastboot with the tablet in such a state? How can I get in to APX mode?
thnx,
Christoph
Click to expand...
Click to collapse
did you try to use the reset button to go into fastboot mode? or boot into recovery if possible and use adb reboot-bootloader?
also does your pc see the device? adb devices / Fastboot devices?
-Buster
Buster99 said:
did you try to use the reset button to go into fastboot mode? or boot into recovery if possible and use adb reboot-bootloader?
also does your pc see the device? adb devices / Fastboot devices?
Click to expand...
Click to collapse
Thanks again for your reply!
Yes, I tried the reset button however it behaves just the same as pressing the power button. It just seems to restart the device. I've tried holding the volume toggle in both the up and down position (at separate times) while pressing the reset button and the behavior is the same as when pressing/holding the power button.
When I have the device hooked up to my laptop (macbook pro), neither `adb devices` nor `fastboot devices` list anything. Before my major screw up, both were able to list it.
thnx,
Christoph
After a lot of tries i got it working
Link to my thread ---> http://forum.xda-developers.com/showthread.php?p=45120193#post45120193
Good Luck!

No fastboot mode available - Huawei Mediapad X2

Hi there,
i do not want to be annoying, but still need Your help, because I do not have any further idea, what I can do to enter the fastboot mode on my Mediapad X2.
I have a Mediapad X2 GEM701L and flashed with the "dload-method" the B205 Android 6 Firmware of the Mediapad GEM702L (see here).
It works fine. (only the known issues like DT2W is enalble, but does not work).
I flashed that rom, because, I hoped, that the fastbootmode and the recovery mode will be usable after that.
Before flashing, (and still right now) , it was impossible to enter the fastbootmode by pressing Power on and Vol down.(USB cable is connected to the PC). Entering the fastboot mode by power off the Mediapad, and connecting USB Cable to the PC while pressing Vol down, was impossible, too. The tablet is always booting into the system. (normal boot).
Pressing all three buttons (Power , Vol up and Vol down) will enter the Huawei install screen. This works fine and any (correct) update.APP in a dload folder on a inserted SD card will be installed.
I also can reach the Huawei recovery screen to reset to factory defaults or wipe the cache and dalvic partition.
I tested several ways: USB debugging = on / USB debugging = off, Hisuite-Mode =enabled / disabled, USB mode= Hisuite, Google oder Manufacturer mode...
no way was successfull.
It is always the same result: The Mediapad's screen stays black, because the white fastboot screen does not appear. In Windows (10) I get a device connected, but not a specifc device, there are only three points. When started the Mediapad normal (in system), the device is recognized correct.
Please, can anyone help me ?
Thanks a lot and excuse my bad English, I am from Germany....
regards, MalcomX
EDIT: found some spelling mistakes
You have to use a usb cable connecting your phone and PC first. This is required.
Then press power+ volume down to boot up. It goes in to fastboot mode.
iamhcg said:
You have to use a usb cable connecting your phone and PC first. This is required.
Then press power+ volume down to boot up. It goes in to fastboot mode.
Click to expand...
Click to collapse
Hi iamhcg,
thank you for your reply.
As I wrote above: connecting the Mediapad (powered off) with USB cable to the PC and then pressing power and simoutaneous Vol down, does not work. The Mediapad only is booting to system (EMUI)... not into fastboot/flash mode....
That is the reason, why I am calling for help here....
SOLVED !!!
MalcomX said:
Hi iamhcg,
thank you for your reply.
As I wrote above: connecting the Mediapad (powered off) with USB cable to the PC and then pressing power and simoutaneous Vol down, does not work. The Mediapad only is booting to system (EMUI)... not into fastboot/flash mode....
That is the reason, why I am calling for help here....
Click to expand...
Click to collapse
OMG ! the trick is the sequence, to press the buttons:
Only when I am pressing the VOL down first and then the power-button, the fastboot-mode will appear....
Thany you for your patience.
MalcomX said:
OMG ! the trick is the sequence, to press the buttons:
Only when I am pressing the VOL down first and then the power-button, the fastboot-mode will appear....
Thany you for your patience.
Click to expand...
Click to collapse
Wow, so glad you figure that out. When you said you fastboot-flashed other rom before, I knew fastboot mode got to be there. It's most likely some detail procedure that's got overlooked.
For me, I normally connect my phone to PC, and press reboot while my phone was still on. All I need to do is press volum down button. I don't even need to worry about the power button. It is interesting to know the specific sequence actually affects the outcome.

Can't enter download mode S10e please help

I have searched and looked for alternatives on how to maybe enter download mode but have not found any solution. I have tried phone off then vol. down + bixby then plug in usb, also pow button + bixby + vol. down then plug usb but every time I do this all I get is a circle with a lightning logo with battery percentage. I also went into recovery mode and tried rebooting into bootloader however that just ends up rebooting back to the recovery menu. Please help. Thank you.
anyone with any tip on what might help or be the issue? I have an exynos version.
wbaez0320 said:
anyone with any tip on what might help or be the issue? I have an exynos version.
Click to expand...
Click to collapse
Hi, try to reboot into bootloader using ADB.
First off thank you for the response.
I tried that as well however maybe I did it wrong. Is it? adb reboot bootloader or adb reboot download
It's so strange you know cause I've tried so many different ways and I thought that rebooting to bootloader from recovery menu would definitely work however all it does is reboot back to my home screen.
Power off phone and just hold down pwr+vol up+ Bigsby for like 8ish seconds and it should boot to download.
Also adb/fastboot is a second route, read through this the below link. Make sure you have the Samsung drivers installed and adb/fastboot properly installed and prerequisites. https://www.theandroidsoul.com/unlock-bootloader-via-fastboot-android/
Or try to boot in safe mode
Hold power button when phone is on, then long press power off, and then select safe mode. https://www.verizonwireless.com/support/knowledge-base-223011/
wbaez0320 said:
I have searched and looked for alternatives on how to maybe enter download mode but have not found any solution. I have tried phone off then vol. down + bixby then plug in usb, also pow button + bixby + vol. down then plug usb but every time I do this all I get is a circle with a lightning logo with battery percentage. I also went into recovery mode and tried rebooting into bootloader however that just ends up rebooting back to the recovery menu. Please help. Thank you.
Click to expand...
Click to collapse
You have activated USB Debugging on Programer options?
yes USB debugging has been activated
NewWorldOrphan9 said:
Power off phone and just hold down pwr+vol up+ Bigsby for like 8ish seconds and it should boot to download.
Also adb/fastboot is a second route, read through this the below link. Make sure you have the Samsung drivers installed and adb/fastboot properly installed and prerequisites. https://www.theandroidsoul.com/unlock-bootloader-via-fastboot-android/
Or try to boot in safe mode
Hold power button when phone is on, then long press power off, and then select safe mode. https://www.verizonwireless.com/support/knowledge-base-223011/
Click to expand...
Click to collapse
well apparently I can't boot into safe mode either, while screen on I long pressed power button then long pressed power of for more then 10 secs but that doesn't do anything
crazy thing is I'm able to boot into recovery with no problem but that's about it. also adb does recognize my device as I can see the characters after inputting "adb devices"

Recovery Modus

How to boot to recovery Modus?
The known keys did not work for this model.
SeewolfPK said:
How to boot to recovery Modus?
The known keys did not work for this model.
Click to expand...
Click to collapse
If I remember correctly use the known keys whilst usb is connected to laptop or PC, when the little android dude pops up on screen you will get text on the screen saying "no command " press volume up and power keys at the same time it will enter recovery. Hope this helps

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