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Running (was) a stock rooted N7 v1 on 4.3. Bought a data recovery tool off of the play store to try and recover some photos I had deleted. At some point it rebooted into safe mode, my battery was running low and I shut it off to let it charge. Now it's dead in the water. Stuck in APX mode. I am asking if there is anyway to breathe life back into this tablet.
The tablet does nothing on the screen, period, no matter what you do. When plugged in to a computer it sometimes registers as an unknown device, sometimes APX. None of these get you anywhere. Toolkits on these forums won't recognize the device, installing the android development kit and drivers does nothing, executing commands from the command line is worthless because the device won't register. I do not have any "blobs" and have no clue at this point even what they are or what they could have done for me had I made them.
I've searched this forum and found bits and pieces here and there and wanted to start a thread dealing solely with devices stuck like this and what has or hasn't worked and get others input if warranty service was done and the state your tablet was in when you sent it in (locked/unlocked, rooted etc).
Anyone stuck here will have probably tried the same things as I have but here is is a minor rundown...
1) Every button combo press known to man for short, medium, and extended periods of time.
2) Charging with the Original charger/cable for 1 hour, then button presses then charging for 12 hours.
3) Same as above but with different aftermarket chargers at different amperages.
4) Uninstalling and deleting drivers. Trying different drivers. Getting the Android drivers etc.
5) Trying every toolkit on the forums to no avail because the device won't register.
6) Checking to make sure the battery cables are seated correctly.
7) Screaming and yelling at your new paperweight.
My hope here is that I've missed some important thread about recovery and someone can point me in the right direction. Failing that, if I should get a new mobo or try and send it in for warranty service in the state it's in.
Any help would be much appreciated.
Sent from my Rooted Frameworked SCH-I545 using xda app-developers app
I don't know what you tried before to revive your tablet and what the tool did to get you into this state, but generally APX mode can be left by pushing the power button *only* for about 10-20 sec, as long as there us enough power within your battery and the hardware / software is working / consistent.
Sent from my Nexus 7 using xda app-developers app
I don't think I've ever seen anyone in here describe a situation where they observed the tablet in bootloader mode without seeing *something* on the screen.
And as you found out through your reading, using "nvflash" on the N7 is only useful at this time for folks that made prior disaster recovery preparations. So, APX mode is of no use to you (at this date 12/2013).
So, until you see something happen on that screen, drivers on a PC are of no value to you anyway.
It is really unfortunate that the N7 doesn't have a physical charging indicator - that makes it difficult to distinguish between a tablet which is truly borked vs. one that refuses to boot simply because the battery isn't charged.
Holding down a specific button combo (iirc Pwr+VolUp) during an attempt to get "something, anything" to happen will put the tab into APX mode, so it isn't particularly diagnostic that you have observed APX mode once or twice.
Really about the only way to know if the battery in a non-responsive N7 is charged or not is to put it in another tablet or measure the open-circuit voltage. (About 4.15v fully charged & about 3.5v discharged)
The reason that I mention this is that there have been a few reports from users in similar straits as you that report something like "I don't know what happened, but I tried it a few days later and all of a sudden the tablet booted up". Almost every one of those reports involved mentions of low battery conditions, just as your narrative does.
I don't know what file recovery program you used, but I suspect that is a red herring . It might have to have root privileges in order to read raw partitions, and might even want the tablet in safe mode to minimize write activity by *other apps* while it does it's forensics, but it certainly isn't going to recover files by writing in raw mode on a mounted, live filesystem - it would do all it's writing through normal kernel syscalls. That's the long way of saying that a low battery is more likely to be the original source of your troubles.
So what to do now? I think the first order of business is to figure out if your battery is charged or failing to take a charge. If it really is well charged, then a warranty return is probably in your future.
If you can't find a second N7 or a voltmeter, then you could try just leaving it on the charger for a couple of days... but that really is just a "grope about in the dark, wing & prayer" kind of strategy.
good luck
Button sequences & USB Identifiers (VID/PID pairs):
http://forum.xda-developers.com/showthread.php?t=2133986
You are in the same situation I was in - nothing shows up on screen. I got APX drivers to finally install (had to search all over the internet to find them) and that STILL didn't help. I was never able to get it to come back. Nothing ever showed up on the screen.
No combination of button presses helped. I finally gave up and, since my N7 was still under warranty, I RMA'd it back to ASUS. It took about 3 weeks, but I got it back with a new motherboard installed on it.
It was borked and your's sounds the same way as mine. Just either register your N7 on the ASUS website and RMA it that way, or call it in over the phone and RMA it that way. Hopefully, you still have the box your N7 came in because you'll need the serial number.
Others have stated you can get it by opening the back, but that will void your warranty. I do believe you MUST have the serial number, so find the box and get it from there.
Also, you'll definitely lose everything that was there, especially if they replace the motherboard. So hopefully, you backed it up. I backed mine up just before it got borked, so I was lucky.
Good luck!
I am wary of trying to do the battery swap. I went and bought a new version after it crashed but I would be voiding both warranties to try the battery swap.
I do have the serial number if I want to try and get service.
I have done some reading about "deep discharge" battery issues and I suspect this may be a part if it but I have tried leaving it plugged in for days and nada.
I don't know if there is a way to "shock" or jump start the charging process and I am going to put the multimeter on it tomorrow and see what I get.
Thanks for everyone's input. I will keep you up to date.
Sent from my Rooted Frameworked Verizon Galaxy S4 on MJ7 using the XDA App.
I have read every single thread that exists on the internet about this problem, the bootloops, the faulty bootloaders, the wrong rooting and image installations, every single posible way to brick this piece of device that everyone seems to have problems with. Yet none of them has gave me a solution. First of all, it's my girlfrinds tablet, she told me that one day, she tried to upgrade the android software and while it was installing it, the tablet bricked. She was able to go to fastload mode (power + volume up) we've tried recovery mode, factory reset, every option there, nothing. She gave me the tablet, I plugged it on my pc and used Nexus Root Kit to install a new android software to the device. After a painful search of how to make the Kit recognize the tablet because usb debugging was not on, I was able to start the process of installing the new software. Yet, in the middle of the installation, the micro-usb moved a little bit and the tablet got disconected. The process was cancelled and the tablet screen froze. I turned the tablet off and that was when it just bricked and never wanted to turn back on. Neither with any combination of the buttons, nor while leaving it charging a long time, nor any possible solution the internet may have about this. Just fully totally and simply bricked. Yet, when I connect it to my pc (windows 7 ultimate 64 bits) sometimes, it reads it as an unknown device, sometimes it reads it as a random APX device, and when I install any kind of drivers that already exist on every thread that there is about it, it reads it as an ASUS Transforme Prime APX Interface, yet the tablet never displays anything, and I'm not able to access it in any way nor make any changes to it whatsoever. I live in a country were there is no google or asus techical support, and third-party technical supporters are dumb as f***. My girlfrind took the tablet to 2 other places before giving it to me and they said to her that "it didn't have any software installed" (which was wrong) and that "it was beyond repair" (which was also wrong). The only thing I want to know is: is there any way to fix it now? or do I just have a very nice and fancy paperweight in my hands.
Makatown said:
I have read every single thread that exists on the internet about this problem, the bootloops, the faulty bootloaders, the wrong rooting and image installations, every single posible way to brick this piece of device that everyone seems to have problems with. Yet none of them has gave me a solution. First of all, it's my girlfrinds tablet, she told me that one day, she tried to upgrade the android software and while it was installing it, the tablet bricked. She was able to go to fastload mode (power + volume up) we've tried recovery mode, factory reset, every option there, nothing. She gave me the tablet, I plugged it on my pc and used Nexus Root Kit to install a new android software to the device. After a painful search of how to make the Kit recognize the tablet because usb debugging was not on, I was able to start the process of installing the new software. Yet, in the middle of the installation, the micro-usb moved a little bit and the tablet got disconected. The process was cancelled and the tablet screen froze. I turned the tablet off and that was when it just bricked and never wanted to turn back on. Neither with any combination of the buttons, nor while leaving it charging a long time, nor any possible solution the internet may have about this. Just fully totally and simply bricked. Yet, when I connect it to my pc (windows 7 ultimate 64 bits) sometimes, it reads it as an unknown device, sometimes it reads it as a random APX device, and when I install any kind of drivers that already exist on every thread that there is about it, it reads it as an ASUS Transforme Prime APX Interface, yet the tablet never displays anything, and I'm not able to access it in any way nor make any changes to it whatsoever. I live in a country were there is no google or asus techical support, and third-party technical supporters are dumb as f***. My girlfrind took the tablet to 2 other places before giving it to me and they said to her that "it didn't have any software installed" (which was wrong) and that "it was beyond repair" (which was also wrong). The only thing I want to know is: is there any way to fix it now? or do I just have a very nice and fancy paperweight in my hands.
Click to expand...
Click to collapse
Hello,
Thanks for using XDA Assist.
Your thread will be moved to Nexus 7 Q&A,Help and Troubleshooting.Experts there may be able to help you
___
v7
XDA Assist
Ha, yes...same boat and similar situation happened where USB became disconnected during bootloader flash. Surprised there haven't been any snarky comments made on your (and now my) situation. I have a totally non-responsive device now and Windows is also not recognizing the USB device (because it does not respond back when attempting to connect/mount). Looks like the only magic at this point would be cracking open and trying a completely different path to restoring, otherwise it is time to find a nice door needing a doorstop!
~Dubhead
well Yeah.. so i bought this stick just now on ebay thinking it should be good enought to give away for streaming some live tv and so on, but
this had obviously the WIFI problem and there i was..
Not beeing able to use WIFI i started to search for different roms and after a couple days constantly searching HOW TO- and downloading different ROMS and watching youtube on how to flash i set up to the task once again..
Beeing able to flash both Nvidia tablets, Samsung Telephones, and Xiaomi i felt confident that i would be able to fix this..
But no, i had a couple different roms that started up With start screen but then that was it, nothing more i couldnt get past start boot logo on either of the 3 roms i thought was correct so i startd to search for same chip roms as this has the 3229 rockchip and the AS something number wifichip..
But then after flashing With a unknown rom it wouldnt start up again or even get recogniced by the computer usb again..
I tried the reset button, i tried shortcutting pin 6-7 and most likely all other as well but no Luck..
There is a blue light but its only halfway as Bright as when the stick was ON and working.
So its like its stuck in some low Power recovery or i dont know..
At least it lights up when i plug it in.
this is the stick With the red "plastic antenna"
Its not an antenne after all by lokking at it but maybe it serves some purpose of making People think its an antenna..
Any suggestions will be apreciated as now i consider it as Waste and after just spending 35 USD on it i would like it to at least get it back so i can sideload some games on it and give it away rather than putting it in the trashcan..
I attach link to the crap i bought so you get the idea of what it is and to also avoid..
Thank you all for all help!!
http://www.ebay.com/itm/252678580408
veralynn said:
well Yeah.. so i bought this stick just now on ebay thinking it should be good enought to give away for streaming some live tv and so on, but
this had obviously the WIFI problem and there i was..
Not beeing able to use WIFI i started to search for different roms and after a couple days constantly searching HOW TO- and downloading different ROMS and watching youtube on how to flash i set up to the task once again..
Beeing able to flash both Nvidia tablets, Samsung Telephones, and Xiaomi i felt confident that i would be able to fix this..
But no, i had a couple different roms that started up With start screen but then that was it, nothing more i couldnt get past start boot logo on either of the 3 roms i thought was correct so i startd to search for same chip roms as this has the 3229 rockchip and the AS something number wifichip..
But then after flashing With a unknown rom it wouldnt start up again or even get recogniced by the computer usb again..
I tried the reset button, i tried shortcutting pin 6-7 and most likely all other as well but no Luck..
There is a blue light but its only halfway as Bright as when the stick was ON and working.
So its like its stuck in some low Power recovery or i dont know..
At least it lights up when i plug it in.
this is the stick With the red "plastic antenna"
Its not an antenne after all by lokking at it but maybe it serves some purpose of making People think its an antenna..
Any suggestions will be apreciated as now i consider it as Waste and after just spending 35 USD on it i would like it to at least get it back so i can sideload some games on it and give it away rather than putting it in the trashcan..
I attach link to the crap i bought so you get the idea of what it is and to also avoid..
Thank you all for all help!!
http://www.ebay.com/itm/252678580408
Click to expand...
Click to collapse
Hi.
I think I have the same device as you. And also I tried to flash another rom without success, so until I find a good rom, its just a small brick.
I also been in the same situation as you, but you have to short pins 7-8 to revive. Its the pins facing the middle of the device, and counting from the device edge/side.
Good luck. If you find a working rom for it, let me know
No, i have had no luck. Piece of **** device.
Got 80% refund from seller after a couple weeks of complaining.
Just throw it away and buy a ZAPPATI media player or a Nvidia shield if you dont use any 3D.
veralynn said:
No, i have had no luck. Piece of **** device.
Got 80% refund from seller after a couple weeks of complaining.
Just throw it away and buy a ZAPPATI media player or a Nvidia shield if you dont use any 3D.
Click to expand...
Click to collapse
Hi again.
If you ever revive your dongle, you can get a working rom from the following link:
http://freaktab.com/forum/tv-player-support/rockchip-based-tv-players/rk3229-devices/firmware-roms-tools-bg/623420-mk809iv-rk3229-bricked-how-to-unbrick?p=646882#post646882
It worked for me
Thanks. I will try. Any tips in how to revive it??
I also have an mk809iv. I couldn't get developer options to show after tapping build number but it said "no need you are already a developer" (I assume its preunlocked?) I got bored and decided to flash a rom. I have the rockchip factory tool and rockchip batch tool. I tried flashing an update and the problems began lol
OK..... The stick now doesn't have a blue led on AT All. Tried original mains power source different USB cables different ports on laptop etc.
When I connect it to the TV it doesn't show up on the hdmi. Have I really fried it properly ?
Is there a way to use command on pc or adb shell or something to unlock the bootloader. In batch tool I can see the device after shorting pin 6/7 method but when I load firmware and start to flash then it comes up with failed at boot every time and on different versions of the tool.
I rooted the device before with King root (not king o root) and flashed supersu via rom installer app. Assuming that developer options are open by default, the device should be rooted now...... Right? ?
Anyway is there a way to uninstall all the software and reinstall the manufacturers firmware via the pc ? I have included pics of the board, but when looking at other people's pics the have a lot more chips and nand chips etc mine has one chip on the back and on the other side what I presume to be a heat sync (look like a bit of a tin can
Lol)
I have been on many forums for about 48hrs straight now ? and still can't find answers *sigh*
Recap:- 1 is it fried
2 if not can I sort it via pc
3 HOW?! lol
One last thing, would it run on cyanogenmod 11 ? it's an android device running kit kat and my gingerbread S2 is now on cm11 or are the internal "gibbons" different ?
Many thanks to anyone who can lend me a hand ??
Have not done much with rooting android devices in years and recently bought an Atoto A6 for a work van. I started messing around with it at home. Was able to gain root with Kingoroot and the replacing it with SuperSU. I emailed them about unlocking the bootloader but I'm not sure whoever responded even knew what I was talking about. Although ADB was working with system booted, I was not able to connect to the unit in fastboot. If you boot into recovery, it automatically runs an update and reboots. And if you boot into Fastboot with acc powered, fastboot automatically restarts. So using adb to reboot into bootloader and then removing power from acc would get me to a fastboot screen(although screen is off, putting power back to acc would show screen at fastboot mode) but I was never able to connect. I was trying different things to boot into an actual recovery, the A6 has no physical buttons, just a small hole for the reset. At some point it completely stopped responding. None of the sensor buttons light up and nothing on the screen. The micro sd I had in no longer works either. I did have update.zip backed up. Anyone know if there would be a way to use that to boot from a new micro sd or any other ideas to try, any help is appreciated.
The a6 has a mediatek mt8127. Was coming up as Alps A6. The build was alps/full_A6_series/A6_series:6.0/MRA58K/1506516231:user/test-keys . I did have it apart and have pics of the board, don't know if they would be useful though.
Upon further review, board mounted reset button was screwed up, all good now. Would be nice to figure out the bootloader on this, although I don't have it installed in a vehicle, this unit seems to run pretty well. Not a fan of the the launcher setup and appearance .
stabone00 said:
Upon further review, board mounted reset button was screwed up, all good now. Would be nice to figure out the bootloader on this, although I don't have it installed in a vehicle, this unit seems to run pretty well. Not a fan of the the launcher setup and appearance .
Click to expand...
Click to collapse
Glad you "unbricked" it, and glad somebody is willing to risk rooting it. That might go on my weekend project list, would appreciate more details on Kingroot and how you swapped it with SSU. I miss ad blockers, among other things.
I got the same unit from Amazon last week (2gb touch only version), but wish I had opted for the physical button model now.
My biggest complaint is the damned FM radio app, which by default comes on when it comes out of sleep, and there's no obvious way to disable it. The volume level on FM is like 2x streaming/MP3 volume so it blasts you when starting the car if you forget to turn volume way down when you get out. I'd love to know the actual app name so I could disable it entirely, since I never listen to broadcast radio anyway.
Oh, and the parallax on the thing is annoying, getting a finger lined up on small touch targets takes some practice.
Other than that issue, I'm not unhappy with the unit. 2-second boot is legit, and living in Florida and an open sunroof junkie, I'm especially pleased with the screen brightness.
Using CarWebGuru instead of the default Atoto launcher makes for a much better experience, and I like the fact that the Atoto controls on the bottom (home, back, multi-tasking, brightness, mute) all remain there no matter what launcher you choose.
Sound quality using my car's factory amp (via a Metra CANBUS harness) is surprisingly good too, I can't tell much difference between the A6 and the Pioneer FH-X730 it replaced at the volume levels I like, though there is some RF bleed from the SoC. And it's a near-perfect fit in a Schoshe double-din GM dash kit, there's not enough room for a toothpick around the edges of the screen and the dash kit inner bezel.
For rooting use KingOroot. You need the one for windows, the app on the unit itself won't do it. Then just google replacing kingoroot with Supersu, there are lots of threads about it. You could try the simple version but I ended up manually replacing files to do it, it's not bad at all. I wouldn't be to worried about bricking it, I have been trying all different things to get to a bootloader and at worst it re-updated and was working fine. What i did with the reset button, Ive done to othere devices, those surface mount buttons are junk. After doing a ridiculous amount of research, I found that MTK units don't enable fastboot. The preloader is what you have to get into to do anything, using mtk drivers. I could catch it right when its booting, installs the mtk vcomm drivers, but jumps right out. Once you are in that you need their flash tool, SDflash and there is MTKtools. So once thats figured out, i'm hoping to be able to get a custom recovery on. Without fastboot, it seems a bit more tricky, without that reset button I could be missing something simple. Hopefully more people start screwing with these, I doubt the people at Atoto are going to be of much help. So far tho, it seems like a decent unit. Let us know if you find out anything.
So far I was able to extract the boot and recovery img files. You can connect to the preloader using SP Flash by setting it up to read
Ima let you do the heavy lifting on this one Stabone.
For now, I'm just frustrated on the damn FM app opening at startup and it's nested in the Atoto firmware somewhere, not an isolated app.
One other quirk, on my car (with GM 11bit CANBUS), the illumination signal seems to be flipped from what Atoto is expecting...lights on means brighter screen, lights off means dim. I've tried it with both an Axxess and PAC CANBUS adaptor, so it's not the harness' fault. Just using the NONE setting for now and manually dimming the screen myself.
I sure hope stabone00 keeps working on this. I have been following this thread closely. I have been wanting to root this but I have it installed in the car now. why cant this be easy like a nexus 7. I am very afraid of bricking it and I really like the head unit
Not sure what happened to my last post, it should've been a bit longer then that, hah, oh well. Anyway I'm a little stuck here. After finding out as much as I did, I was going to try a few things. I'm running a dual boot laptop with opensuse as my main and a windows 10, for occasions as such, the tools used for this head unit are more abundant for windows(at least found easier). So recently I wiped my systems and now am having this Rsa Key Fingerprint issue when trying to connect with adb. I'm spending way to0 much time on this as it is, lol. But running into this bs is really pain. Now I've tried for hours to do something here but it's almost as someone's watching what i'm doing and countering my moves. Now I've factory reset this thing about four times and never lost root. After struggling with this rsa fingerprint issue, I did a factory reset and now SuperSu is gone, although I can't say for sure totally cause I still have not access to ADB. Any suggestions for the rsa issue, let me know, otherwise I'm not going to be wasting much more time with this. BTW, anyone getting anywhere with this, you need the modified version of MTK android tools to recognize this unit. I have boot and recovery img's and a scatter file if needed.
Got passed issue with adbkeys. Now I accidentally flashed a recovery when it was not ready. I am now stuck in a boot loop. Made lots of backups, but for some reason, none contain the preloader.bin. Not sure why that happened, but that is needed to flash backups with SP tools. If anyone could send me that, it would be great. I can't pull it cause I can't get it to connect to mtk droid tools. Maybe there is another way, but I don't know it.
stabone00 said:
Got passed issue with adbkeys. Now I accidentally flashed a recovery when it was not ready. I am now stuck in a boot loop. Made lots of backups, but for some reason, none contain the preloader.bin. Not sure why that happened, but that is needed to flash backups with SP tools. If anyone could send me that, it would be great. I can't pull it cause I can't get it to connect to mtk droid tools. Maybe there is another way, but I don't know it.
Click to expand...
Click to collapse
I have the same unit. If you can tell me how to pull it, I'd be happy to help.
smithkt said:
I have the same unit. If you can tell me how to pull it, I'd be happy to help.
Click to expand...
Click to collapse
Have you tried anything with it yet? There's quite a bit to it. The info is all searchable on here, you are looking for mediatek devices, sp flash tool, mtk droid tools. Let me know if you have adb and drivers installed. All the info needed for this unit is available , but there is a lot of info on mediatek devices, so it's a lot to look at. You need to have developers options enabled and oem unlocked and usb debugging on . If you can connect to your unit through adb, thats a start. Don't attempt anything with fastboot, it's not enabled on this unit. You'll then want to look for the modified version of mtk droid tools 2.5.3. If you are able to connect with that, I'll tell you what to do next. Not so sure my unit is recoverable, i've lost the startup atoto screen and can no longer connect with sp flasher. Hopefully there is something that can be done.
stabone00 said:
Have you tried anything with it yet? There's quite a bit to it. The info is all searchable on here, you are looking for mediatek devices, sp flash tool, mtk droid tools. Let me know if you have adb and drivers installed. All the info needed for this unit is available , but there is a lot of info on mediatek devices, so it's a lot to look at. You need to have developers options enabled and oem unlocked and usb debugging on . If you can connect to your unit through adb, thats a start. Don't attempt anything with fastboot, it's not enabled on this unit. You'll then want to look for the modified version of mtk droid tools 2.5.3. If you are able to connect with that, I'll tell you what to do next. Not so sure my unit is recoverable, i've lost the startup atoto screen and can no longer connect with sp flasher. Hopefully there is something that can be done.
Click to expand...
Click to collapse
No I haven't done anything with it yet. I wasn't planning on rooting the device. The only reason it's not in my car already is it's been 10-20 F and I don't have a garage. I have the thing sitting on my kitchen table so I can play with it.
I'll look through the info and see what I can do.
smithkt said:
No I haven't done anything with it yet. I wasn't planning on rooting the device. The only reason it's not in my car already is it's been 10-20 F and I don't have a garage. I have the thing sitting on my kitchen table so I can play with it.
I'll look through the info and see what I can do.
Click to expand...
Click to collapse
I have it hooked up with two switches, one feeds constant and other switch, and other switch feeds acc. Rooting it isn't too bad, but if you look into how the sp flasher is used, you could make a stock rom before doing it. I'm hoping there are test points on the board that can be used to get this flashed again. I'm not sure how it got this far gone. I had it bootlooping at the ATOTO startup, tried to flash the original boot and recover, seems like it wiped the preloader.
Have you had luck in unbricking your atoto?
I'm thinking about buying one also buy would like to root with kingroot and put a recovery into stereo if it's possible. Let me know your success is possible.
Thanks
Steven
scoolro said:
Have you had luck in unbricking your atoto?
I'm thinking about buying one also buy would like to root with kingroot and put a recovery into stereo if it's possible. Let me know your success is possible.
Thanks
Steven
Click to expand...
Click to collapse
So far it seems to be a very solid unit. Rooting it isn't an issue. I had been trying different things with this unit and at one point I thought it was almost unbrickable. It still might be, just haven't found a solution for my issue (which was completely my fault), although I'm pretty confident there is one. There is a lot of info about mediatek devices on here, a bit different approach when flashing a custom recovery.
Overall I was liking the unit, hadn't seen any issues some of the others had. Hope to see more people getting involved.
I hope you get the unit working soon.
I'm thinking about getting the same unit and I want to root it so I can get ADAWARE and XPOSED app installed. I'm also thinking about getting a Bluetooth media steering control for it also.
I've only seen the Atoto A6 on Amazon.ca for about $280. Hopefully there is another site that sells cheaper.
Again good luck and keep us informed with your progress if possible.
Steven
Atoto offered a to replace the unit with the PB model, as this one is no longer available. After doing as much research as I did, I am certain that this can be fixed. There should either be a way for force the preloader or get into a meta mode/ flashing mode. I'm going to keep it and see. I'm ordering the PB as soon as it is available again on Amazon.
So driving home from work today, I noticed an update pending for the A6. Was in a good coverage area (using a MiFi hotspot, btw, not my phone), downloaded it at a long stop light, hit install, and after reboot, I got the dead Android ERROR! graphic. About **** myself, thought I might have bricked it. At the next red light, I did a reset (I keep a slim toothpick in the console now, for just such emergencies) and I'm back to the old November build.
I ended up sending my 62721p back and am waiting for the pb model.
Did you have it rooted?
stabone00 said:
I ended up sending my 62721p back and am waiting for the pb model.
Did you have it rooted?
Click to expand...
Click to collapse
Nope, couldn't be assed, it's basically a Poweramp/Waze/Spotify machine for me now, figured I don't need root for that, and all the cool root-level stuff the Rockchip and Sofia units get isn't available for this thing anyway.
Did get the update to stick the second time around, but noticed no changes in functionality. MCU got updated as well.
Hey!
While I was calibrating my fingerprint, phone suddenly turned off and went to recovery with screen off.
I managed to reflash stock rom through fastboot and it boots to system fine, but the screen stays off and the front camera keeps trying to open while playing the MIUI camera sound (sometimes, while booting, the camera does manage to open once, kinda like it's calibrating). Some playing around with ADB and it seems that the SIM isn't recognized either.. antenna maybe?
I opened the phone up and checked everything, there's no visible issues with the electronics, however it could just be the inside of a cable that died?
Does anyone know what this could be? I noticed the screen, fingerprint reader and antenna are all connected to the same removable PCB, but the camera isn't so that's odd.
Aren't we moving way too fast here? Like wtf is happening rn?
First: Explain in detail from the beginning please if you want help.
Second: Please state exactly what is your issue, and the ROM version of your device.
I don't think what you just did is the cause of whatever problem you're facing, do you mind telling me the source from which you got this phone? Otherwise you might want to send it to a service center.
XDHx86 said:
Aren't we moving way too fast here? Like wtf is happening rn?
First: Explain in detail from the beginning please if you want help.
Second: Please state exactly what is your issue, and the ROM version of your device.
I don't think what you just did is the cause of whatever problem you're facing, do you mind telling me the source from which you got this phone? Otherwise you might want to send it to a service center.
Click to expand...
Click to collapse
It's a bit of a long one, so I didn't want to bother too much with the details if anyone knew what those specific issues could be caused by, here goes though:
I am on a Mi 9T bought on Amazon Italy in July 2019. I cannot comfortably send it to a repair center due to every authorized shop around here is just a drop-off point for Xiaomi RMA. I talked to them and, due to (>6 months old) glass damage to the screen and back of the phone, they intended to charge me way more than I can afford, as "solving issues covered by the warranty would require us to replace the accidentally damaged components"
As for what happened:
I was running LOS 17.1 with no issues for a few months. I went to unlock the phone and I heard the reboot vibration, which sent me to recovery (softbricked) but with no screen signal. I assumed it was just a software problem, so I flashed MIUI 12 (global, V12.0.7.0.QFJMIXM) to see what would happen.
As it completed, the phone rebooted itself, the MIUI logo popped up and it went to system (seemingly) without any issues.
I went through the initial wizard and played around with it. everything seemed fine and I even made sure the screen did work in recovery and fastboot. Later, when I went to setup the fingerprint reader, the screen went blank for half a second when I first touched it, and then the same screen death -> reboot to recovery.
The phone was softbricked again, though, this time, reinstalling MIUI didn't yield the same success. Now:
MIUI boots "normally" again
The screen isn't working at all
The front camera opens, as if it's calibrating, when system boots up
The front camera randomly tries to open again every now and then, failing to do so as if the motor is stuck, while MIUI plays the camera closing sound.
Meddling through ADB, the antenna doesn't seem to be working, but I can't be 100% sure due to the methods used
The power and volume buttons, speakers, and the charging light all work.
I have opened the phone up myself, thoroughly checked every cable, connection and PCB, but there is no sign of damage. I put it back together and the same issue continued.
My best guess is that something inside the fingerprint reader went bad and shorted something else.
What that something else is, I couldn't find out. Given the antenna, screen and FOD are all connected to the same little PCB which then runs a couple cables to the motherboard, I am now in the process of finding a couple replacement cables to see if that fixes anything.
As I mentioned before, repair centers are not an option due to the lack of anyone who's willing to help me for less than a good chunk of the price of the phone.
Interesting. So basically what happened is due to the initial soft brick and accordingly you flashed a global MIUI 12 ROM, which in return brought you to the second soft brick which caused some issues within the hardware of the device.
Now you're stuck with a faulty screen, a faulty camera and a faulty antenna.
I don't have the skills to play around with the motherboard and the phone circuit. And I don't care which youtube tutorial you saw, you should have NEVER done that - Of course unless you're actually experienced in that manner, then I apologize for speaking with such prejudice -
I can't help you if you messed up your phone circuit since I have no knowledge about android hardware, however I can safely assume that what caused your issue isn't related to hardware.
I think the issue is caused by an incomplete flashing of a ROM (In this case MIUI 12 global) OR flashing a different variation from your device.
e.g. you flashed only the ROM, but didn't flash the other components of the ROM.
Needless to say, flashing a variation of the ROM that isn't meant for you device can be a disaster recipe.
I recommend flashing LOS again, since you can't go back on Xiaomi devices due to rollback protection.
XDHx86 said:
I don't have the skills to play around with the motherboard and the phone circuit. And I don't care which youtube tutorial you saw, you should have NEVER done that - Of course unless you're actually experienced in that manner, then I apologize for speaking with such prejudice -
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I understand why you'd think that and have seen people do similar stupid things, however I didn't watch any youtube video and know what I'm doing quite well.
I made sure I flashed the correct rom through fastboot to restore everything to stock. I did try to reflash LOS and whatever else (though it's kind of a pain with adb shell), but it doesn't fix the problem, sadly.
That's why I'm betting on a HW issue.
The fingerprint reader and everything else worked flawlessly in LOS for months, but it made the screen go blank and bricked the device in both LOS and fully functional, stock MIUI.
Currently, I'm battling with this damn thing to get USB debugging working while booted to system, so I can do a few things like cast the screen to my PC and see what works from there.
I have access to fastboot and recovery, but everything I know (editing build.prop or patching the boot image) didn't work so far. Do you have any idea what I could do to get that done?
angometry said:
Currently, I'm battling with this damn thing to get USB debugging working while booted to system, so I can do a few things like cast the screen to my PC and see what works from there.
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Click to collapse
If the touch screen is dead then you can use mouse and OTG cable.
If it is completely black then you can get usb c to HDMI cable (Also usb c hub might work, like this one). Or you can use playstore on pc to download and install apps like (Screen stream over HTTP) on your device, just make sure your device is connected to the internet and you're signed in on your phone as well, you might have to type in the screen password if you have one.
angometry said:
I have access to fastboot and recovery, but everything I know (editing build.prop or patching the boot image) didn't work so far. Do you have any idea what I could do to get that done?
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Click to collapse
I don't know why bother with build.prop unless you have the wrong fingerprint prop. Then you can get the correct one from your device's stock ROM, though I think this is irrelevant to your issue.
All I can think of is:
Wiping dalvik cache, though you might have already done that.
Trying other custom ROMs from here.
You may try to get your device rollback index and installing a MIUI ROM that has index higher than it, and see if that works.
That is as far as I can help, unfortunately.
I have zero knowledge when it comes to hardware, so I can only help with software issues. If none of my solutions worked then sorry for wasting your time :/
XDHx86 said:
If it is completely black then you can get usb c to HDMI cable (Also usb c hub might work, like this one).
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Click to collapse
Wait, does it actually just automatically use it as a 2nd screen if I connect it via HDMI?
XDHx86 said:
I don't know why bother with build.prop unless you have the wrong fingerprint prop. Then you can get the correct one from your device's stock ROM, though I think this is irrelevant to your issue.
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Click to collapse
Sorry, I didn't explain myself, I'm looking for a way to enable USB Debugging without a screen. Thinking that using adb in twrp is the best way, but I can't manage to do it. Do you have any ideas?
If I can get it on, I can then use things like scrcpy to get screen signal through USB.
Main problem with everything else is that the screen is 100% dead. Even with usb otg I don't know how I could possibly get through the setup wizard haha
angometry said:
Wait, does it actually just automatically use it as a 2nd screen if I connect it via HDMI?
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I haven't tried it myself, however it should detect it as a second monitor. Give it a try the cable isn't costly at all anyway.
angometry said:
I'm looking for a way to enable USB Debugging without a screen. Thinking that using adb in twrp is the best way, but I can't manage to do it. Do you have any ideas?
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Click to collapse
TWRP has debugging mode on by default, however that strictly applies to recovery and fastboot modes only as debugging mode is pretty powerful and can cause security issues. So you better forget about it.
I saw one of my friends who owns an authorized service center use some cable connections to get the screen to display on another touch screen. If you have the capabilities and resources I recommed trying it, though don't mess too much with the motherboard.
Just a question though, can you confirm if the touch is working? If not then there's a chance - Although slight - that this is just a UI problem (Which is pretty common in MIUI ROMs for some reason). In that case deleting dalvik cache or completely reflashing the ROM might solve the issue.
I may not do much help but certainly someone there can help so it's better if you include "usb debugging" in the title and/or the tags. Like changing the title to "Enabling usb debugging without screen" or "Screen is dead, need help to flash ROM"
Using proper title and proper tags can get the right person to help.