I was following instructions to do a custom rom on my A500 tablet. I got it rooted and got the V9 bootloader installed. I was in the process of doing the CWM to update to the OMNI 4.4.4 rom.
Now, the screen doesn't come on and the safely remove hardware has an Acer Picasso USB boot-recovery driver.
I've tried putting the zips from the "A500 ICS Full Update files" thread and pressing the volume button+power for 3 seconds. I hear the tablet come on via the usb sound on my laptop, but there's nothing happening on the screen at all.
When I try to put the tablet in the APX mode nothing changes on the tablet or how it shows up in my device manager. I've even tried reinstalling the device drivers.
fastboot, adb, and vflash do not see the device...
{update}
I left the tablet charging all night to see if that might have been a problem.
The tablet's power button was showing fully charged.
When I tried to put it into APX mode the light is showing white and it still shows up as that "Acer Picasso USB boot-recovery driver. "
I did notice after the power button was lit white that if I press the reset button that light turns off for about 2 seconds and comes back on. but that's the only life it shows.
Related
So I've had the transformer for a while and I finally took the plunge and followed this guide http://forum.xda-developers.com/showthread.php?t=1125714 to root. I got to step 4c, meaning I successfully ran root.bat and cwm.bat and rebooted afterwards. When I rebooted however, the tablet stayed on the "asus powered by nvidia" screen for a very long time. I decided to shut it down, but it immediately started back up again and stayed on that screen again. The only way to stop it was to put it into APX mode so it doesn't drain my battery.
I'm pretty sure I followed all the steps correctly, and I was on the latest .11 OTA update. Help please?
EDIT: I reread the first few sentences of the guide and realized I missed a very important step... I forgot to extract 84411.zip into the "root" folder of tf_rootkit_31, which means I have no boot or recovery image. Is there any way I can recover from this?
Just start over with the correct files in place.
The boot.bat file will write those files and you should be good to go.
With APX mode the transformer is basically un(software)brick able.
sassafras
I tried starting over but I can't seem to boot into APX mode. When I turn it off and then hold power/vol up, device manager refreshes but APX mode doesn't show up. the device also isn't listed under adb devices in the command prompt...
Vertiginouz said:
I tried starting over but I can't seem to boot into APX mode. When I turn it off and then hold power/vol up, device manager refreshes but APX mode doesn't show up. the device also isn't listed under adb devices in the command prompt...
Click to expand...
Click to collapse
When you say it doesn't enter APX mode, is it still boot looping? When this happened to me, it took about 10 seconds just holding power and vol+ before I heard the USB connected sound.
Vertiginouz said:
I tried starting over but I can't seem to boot into APX mode. When I turn it off and then hold power/vol up, device manager refreshes but APX mode doesn't show up. the device also isn't listed under adb devices in the command prompt...
Click to expand...
Click to collapse
adb won't show the device when it is in APX mode. If you're on windows you need to check your device manager or connected usb devices to see if it's there. The screen on the TF should be black until you start the rooting proccess.
If it is bootlooping just keep power and vol+ unti the screen goes blank - can take a few seconds extra.
Also make sure you use the correct 84411 zip - using the US version on a WW TF will make it go into a bootloop - I suspect the same will happen the other way around.
GL
Thanks for the responses, I'll try again when I get home in 3 hours. also when I say bootloop, it's not turning on and off repeatedly, it just stays on one screen until I turn it off, then it starts back up by itself.
Well it finally worked, I had to reinstall the APX drivers first though, thanks has been given!
I tried to downgrade from 3.2 with that tool and every time it shows me that the operation had failed
Now i am stuck in APX mode help
please anyone????
jimmis1996 said:
please anyone????
Click to expand...
Click to collapse
Reinstall your USB drivers and try again.
And make sure your tablet is in apx mode.
How :
Connect tablet with USB cable when it is off.
Now with paperclip press the reset button and power button together for 3 seconds, then release power button and one second later you release the reset button ( screen of tablet stays black but you will see that in device manager on your pc under USB devices you should see Acer Picasso recovery driver listed , then you know your tablet is in apx mode and connected.)
Now you can Start.
civato said:
Reinstall your USB drivers and try again.
And make sure your tablet is in apx mode.
How :
Connect tablet with USB cable when it is off.
Now with paperclip press the reset button and power button together for 3 seconds, then release power button and one second later you release the reset button ( screen of tablet stays black but you will see that in device manager on your pc under USB devices you should see Acer Picasso recovery driver listed , then you know your tablet is in apx mode and connected.)
Now you can Start.
Click to expand...
Click to collapse
i done it a lot of times but i still says tha the operation cannot be completed.
Could i leave APX mode and boot normally?
HELP PLEASE
OOF!!!!
Well i managed to boot again by using an other pc
Thanks for your help
I have spent all night researching this forum, and have had no luck finding a solution to my problem. My tablet is stuck at either the lock screen (15% battery, no touch controls) or "shutting down" loop, all depending on how I power it up. Most of the methods listed on the forum either involve flashing updates via SD card (none have worked so far) or require me to load a bootloader via PC connection (which I cannot do since I cannot access tablet settings). Does anyone know how I can get this thing working again? I assume that an OTA update was mishandled by the previous owner, and this is the cause of the brick. Any help would be greatly appreciated.
Thanks in advance!
You do not need access to the power settings to be able to boot into APX Mode. If I remember correctly you do the following:
Press and Hold Power Button
Press and Hold RESET Button (Using paperclip or pin) for 3 seconds
Release RESET Button
Release Power Button
It will appear that the tablet doesn't boot, but if you then plug it in to you PC with a usb cord to the miniUSB port it should recognize it as an APX Device in the Device Manager. This should let you do the BlackThund3r's recovery method, or any other method using APX.
I have done all of the BT, TD and babsector stuff with no luck. APX mode is easy enough, but it doesnt help so far.
Sent from my SGH-I317M (Samsung Galaxy Note II) from Tapatalk
I was running stock rooted Android KK 4.4.4 on Nexus 2012 Wifi Only with bootloader as unlocked. I attempted the Lollypop update 5.0.2 by OTA but it gave an error while installing and device rebooted to Kit Kat normally.....working fine. OTA was not getting done for some reason may be because i was rooted.
I downloaded the factory image nakasi-lrx22g-factory-2291c36b.tgz from google and attempted to flash it using Nexus Root Toolkit(v 2.0.2) with option "No Wipe Mode" as selected and then the device ran into fastboot mode... NRT run commands like erase system etc then the script gave an error "Failed" "remote -invalid state" while attempting to write bootloader. I thought that the problem is with "No Wipe" selected so i re-attempted it with "No Wipe" being unselected. BUt same error.
I searched the forum & found that the issue may be due to incorrect/corrupted bootloader. I replaced the bootloader-grouper-4.23.img which was in the factory image with the 4.23 bootloader taken from JWR66V as most people over XDA have said that its the working bootloader.
I had flashed the img downloaded from here - http://forum.xda-developers.com/showpost.php?p=45043044&postcount=15
Flashing succeeded and Nexus Root Toolkit did not give error this time it said "OKAY" instead of "FAILED". But it did not proceed forward to flashing other files like system img etc. NRT was stuck at the Flash Bootloader - OKAY cmd.
I powered of the Tablet and Powered On again it showed "Booting Failed" at the Google Screen. I rebooted into Fastboot mode with "vol- and power" held together. It displayed the same screen as it did before i.e. displaying the information of Bootloader.
Product Name - Grouper
Variant - Not Defined Yet
HW Version - ER3
Bootloader version - 4.23
Baseband version - NA
Signing - Not Defined Yet
LOCK STATE = UNLOCKED
Then I read somewhere that after flashing the Bootloader img you have to run the bootloader by rebooting tablet with vol+,vol- and power button all held together.
I did that and wat i saw on computer screen was "APX device found" (((((
The device went into APX mode and since 2 days has not come out.
I tried pressing Power button for like 3mins with power adapter connected/disconnected by usb
I tried pressing vol- and power button for more than 5min. with system connected/disconnected with usb
Nothing worked...
I am wondering what took the device to APX because the bootloader was good one from "JWR66V". It was flashed with success by Nexus Root Toolkit. the device did run into fastboot mode once after flashing it. The Device went into APX after all the 3 keys "vol+ vol- and power" were pressed together. But according to key combo terms APX mode is activated when "Power" and "vol+" are pressed and it exits when "Power" alone is held for 15+ seconds.
What I feel now is that the device is in APX looping (similar to Bootlooping) due to some reason. Corrupted Bootloader can be one of that but its unlikely as flashing was successful and img used was authentic. One more reason of APX looping may be that nothing apart from Bootloader is present in it, no system no recovery. only bootloader is present.
Now what do I do to come out of APX ? Power button and Power+vol- etc not working tried them numerous times. It won't accept fastboot or adb commands as its in apx mode.
Its Out of Warranty so only 2 options left for me now
1. Battery Removal
2. NVFlash
I want to keep things simple so I am thinking of battery removal first. Does the battery removal reset nexus 7 ?
I have a feeling that its effect is same as the power button holding for 15sec. but will have to try. Although the Warranty is voided but will Asus people agree to provide paid service to me if i myself attempt battery removal by opening the back side of the device.
Incase this dont work I will move to nvflash
But I have a few questions regarding nvflash.
1. Does nvflash require blob n sbk even for an unlocked bootloader?
2. I can generate the SBK for my device using the CCSN number and try though but I want only a simple command which will reboot nexus into fastboot mode exiting APX mode.
any help will be appreciated.
BrightHeart said:
I was running stock rooted Android KK 4.4.4 on Nexus 2012 Wifi Only with bootloader as unlocked. I attempted the Lollypop update 5.0.2 by OTA but it gave an error while installing and device rebooted to Kit Kat normally.....working fine. OTA was not getting done for some reason may be because i was rooted.
I downloaded the factory image nakasi-lrx22g-factory-2291c36b.tgz from google and attempted to flash it using Nexus Root Toolkit(v 2.0.2) with option "No Wipe Mode" as selected and then the device ran into fastboot mode... NRT run commands like erase system etc then the script gave an error "Failed" "remote -invalid state" while attempting to write bootloader. I thought that the problem is with "No Wipe" selected so i re-attempted it with "No Wipe" being unselected. BUt same error.
I searched the forum & found that the issue may be due to incorrect/corrupted bootloader. I replaced the bootloader-grouper-4.23.img which was in the factory image with the 4.23 bootloader taken from JWR66V as most people over XDA have said that its the working bootloader.
I had flashed the img downloaded from here - http://forum.xda-developers.com/showpost.php?p=45043044&postcount=15
Flashing succeeded and Nexus Root Toolkit did not give error this time it said "OKAY" instead of "FAILED". But it did not proceed forward to flashing other files like system img etc. NRT was stuck at the Flash Bootloader - OKAY cmd.
I powered of the Tablet and Powered On again it showed "Booting Failed" at the Google Screen. I rebooted into Fastboot mode with "vol- and power" held together. It displayed the same screen as it did before i.e. displaying the information of Bootloader.
Product Name - Grouper
Variant - Not Defined Yet
HW Version - ER3
Bootloader version - 4.23
Baseband version - NA
Signing - Not Defined Yet
LOCK STATE = UNLOCKED
Then I read somewhere that after flashing the Bootloader img you have to run the bootloader by rebooting tablet with vol+,vol- and power button all held together.
I did that and wat i saw on computer screen was "APX device found" (((((
The device went into APX mode and since 2 days has not come out.
I tried pressing Power button for like 3mins with power adapter connected/disconnected by usb
I tried pressing vol- and power button for more than 5min. with system connected/disconnected with usb
Nothing worked...
I am wondering what took the device to APX because the bootloader was good one from "JWR66V". It was flashed with success by Nexus Root Toolkit. the device did run into fastboot mode once after flashing it. The Device went into APX after all the 3 keys "vol+ vol- and power" were pressed together. But according to key combo terms APX mode is activated when "Power" and "vol+" are pressed and it exits when "Power" alone is held for 15+ seconds.
What I feel now is that the device is in APX looping (similar to Bootlooping) due to some reason. Corrupted Bootloader can be one of that but its unlikely as flashing was successful and img used was authentic. One more reason of APX looping may be that nothing apart from Bootloader is present in it, no system no recovery. only bootloader is present.
Now what do I do to come out of APX ? Power button and Power+vol- etc not working tried them numerous times. It won't accept fastboot or adb commands as its in apx mode.
Its Out of Warranty so only 2 options left for me now
1. Battery Removal
2. NVFlash
I want to keep things simple so I am thinking of battery removal first. Does the battery removal reset nexus 7 ?
I have a feeling that its effect is same as the power button holding for 15sec. but will have to try. Although the Warranty is voided but will Asus people agree to provide paid service to me if i myself attempt battery removal by opening the back side of the device.
Incase this dont work I will move to nvflash
But I have a few questions regarding nvflash.
1. Does nvflash require blob n sbk even for an unlocked bootloader?
2. I can generate the SBK for my device using the CCSN number and try though but I want only a simple command which will reboot nexus into fastboot mode exiting APX mode.
any help will be appreciated.
Click to expand...
Click to collapse
U have done it in wrong way
U should have flashed the recovery and system and bootloader manually without nrt
Are able to detect your device via computer in fastboot mode
shivambhai said:
U have done it in wrong way
U should have flashed the recovery and system and bootloader manually without nrt
Are able to detect your device via computer in fastboot mode
Click to expand...
Click to collapse
I used NRT normally as its directed in NRT's thread. Bootloader taken from "JWR66V" was flashed successfully but NRT didnot proceed forward. I powered of the tablet then pressed both volume plus & minus buttons along with power button simultaneously, I read somewhere that pressing all 3 butons is needed to start the bootloader, This resulted in device going in APX mode, although APX mode is activated by holding only vol plus and power button simultaneously. The device seems to be looped in APX i.e. not coming out of it.
It was detectable as a fastboot device earlier but after it went into APX its detected as an "Unknown Apx device" asking for driver, The Asus Transformer Pas driver is installable for it, but i doubt will it work in nvflash.
I jus need a little information about battery removal & nvflash. I have googled about them already but had a couple of queries which I have posted above.
Thanxxxx
Update
Okay last night I attempted battery removal from the device. I took off the back panel of nexus 7 and disconnected the battery cable which is connected to motherboard socket. I reconnected it after 10mins and still no success. I removed it again and connected the device to computer by USB and I found something very strange. the computer detected the Nexus 7 as "Unknown APX Device" even after the battery was disconnected. I was wondering from where is the device drawing power to run? Is it by computer's USB port alone or is there any other power source in nexus7's motherboard like a CMOS cell is present in Computer's MotherBoard which keeps the clock ticking.
Whatever may be the case but it seems that APX Mode is capable of running in minimal power input.
Next test which I performed was to Hold the power button while it was connected to system by USB. After about 7-8secs the device powered off as the computer displayed USB device disconnected message and sound but it repowered on its own in next couple of seconds and again it was detected as "APX device" . Same result observed with simultaneous holding of volume minus+power button as well.
Now I have every reason to believe that device is hard bricked and looped in APX i.e. The Bootloader is corrupted or is not running due to some reason. The device has no option but to go in APX and sit there forever unless its flashed at low level.
I would like to give nvflash a try but i know that theres no1 yet who has made it success and then the only option remaining for me is to visit Asus service center and get some paid service done.
Query - If I visit Asus service center then will they perform software reprogramming i.e. Bootloader fixing or will they replace the hardware ? Incase if they replace the hardware then will they replace the whole board or just the memory unit(which contains Bootloader) from the board?
Experts here please put some light on this
No idea brightheart
Did you have any luck with this BrightHeart? I seem to be in the same boat now...
BrightHeart said:
Okay last night I attempted battery removal from the device. I took off the back panel of nexus 7 and disconnected the battery cable which is connected to motherboard socket. I reconnected it after 10mins and still no success. I removed it again and connected the device to computer by USB and I found something very strange. the computer detected the Nexus 7 as "Unknown APX Device" even after the battery was disconnected. I was wondering from where is the device drawing power to run? Is it by computer's USB port alone or is there any other power source in nexus7's motherboard like a CMOS cell is present in Computer's MotherBoard which keeps the clock ticking.
Whatever may be the case but it seems that APX Mode is capable of running in minimal power input.
Next test which I performed was to Hold the power button while it was connected to system by USB. After about 7-8secs the device powered off as the computer displayed USB device disconnected message and sound but it repowered on its own in next couple of seconds and again it was detected as "APX device" . Same result observed with simultaneous holding of volume minus+power button as well.
Now I have every reason to believe that device is hard bricked and looped in APX i.e. The Bootloader is corrupted or is not running due to some reason. The device has no option but to go in APX and sit there forever unless its flashed at low level.
I would like to give nvflash a try but i know that theres no1 yet who has made it success and then the only option remaining for me is to visit Asus service center and get some paid service done.
Query - If I visit Asus service center then will they perform software reprogramming i.e. Bootloader fixing or will they replace the hardware ? Incase if they replace the hardware then will they replace the whole board or just the memory unit(which contains Bootloader) from the board?
Experts here please put some light on this
Click to expand...
Click to collapse
Same Issue!
seanet1970 said:
Did you have any luck with this BrightHeart? I seem to be in the same boat now...
Click to expand...
Click to collapse
Looks like this problem is quite common and mostly affecting Nexus 7 2012 devices. Mine to got botched after a OTA update. Any possibilities of Google fixing this /RMA beyond warranty ?
Hi all,
I have just recently rooted my 306SH, the rooting process was fine. The problem started when I flashed an incompatible twrp image. Now I can't boot into anything it seems, no recovery, no fastboot and the power button will show only the logo screen. If connected to a power source the red led light will stay on even if unplugged. The device can be completely shut down and the red light off if I hold the down+volume and power down for few seconds.
I can connect it to my computer via usb by holding up+volume and power (green led light) . I installed google usb driver onto the android device and it stays connected for about 30 seconds to 1 minute. I tried using command prompt and SDK by typing "adb reboot recovery" but get an error message "error: device '(null)' not found.
Things I have installed on my computer:
(ADB, fast boot and drivers) https://forum.xda-developers.com/showthread.php?p=48915118#post48915118
SDK Platform-tools
306SH:
Google USB driver
Is there anything I can do from my computer? I was thinking maybe I can flash in an image to replace it. And also my sim card pops out and can't be set back in, is this due to the incorrect flashing?
Any help or input is greatly appreciated, I've been working on this for a while and is getting no where.