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stuck during boot, do not know what to do

hi all...
...I hope that you can help. Some years ago, I have flashed my polaris from o2. i then got myself an iphone and some new computers (using vista now instead of xp), so that I do not have any of the old files that I used back then to flash the phone. my father was using the xda for quite a while now. however, suddenly the device is not working any more: if you turn it on, the boot screen will appear, but then it is stuck and nothing is happening (even no rom info in the lower right corner). also a hard reset doesn't help to overcome this problem.
what I am trying now is to flash it, because I guess (and hope) that this might help. But, to be honest, I completely forgot how this works. I downloaded an original rom from this website today, but I cannot flash it to the device (stuck at 0%, getting an communication problem error). If I turn on the phone with camera button pressed down, the tricolor-screen appears reading POLA200, SPL-3.13.0000, CPLD-2. what am I doing wrong? your help is greatly appreciated.

Try flashing the rom from the tricolour-screen just make sure at the bottom of the tricolour-screen it say's usb not serial.
You will only be able to flash official roms as you don't have a stock spl not hard-spl.

thanks. I tried this one from this forum: RUU_Polaris_o2_GER_1.24.207.2_withSplash_noRadio_schaggo_[fixed]
but it did not work.
however, I now downloaded the rom from the original o2-site and it is at the moment in the process of flashing it - let's cross fingers.
damn, it did not work. I mean, the flashing succeeded, but the problem still persists: if I start the device, the start-screen appears, but that's it - nothing happens afterwards, and after some seconds, the device turns itself off again.
what could that be?

Could be the battery if the device turns itself off,try booting with the charger or usb still in.Or flash hard spl and try a different rom.

hi all friends if you are stuck on 0% and u cant install spl then do this ,,,
You can try this:
1. Stop ActiveSync
2. Open Task Manager (press Ctrl + Alt + Delete) on your PC and
stop these two processes rapimgr.exe and wcescomm.exe
3. Plug in your device via USB. Your computer should be asking install a driver. Install and continue.
4. Now Run mtty and choose USB in 'PORT'
4. type "set 16 0" without the quotes to tell bootloader to boot the OS after reset.
5. type "task 8" to get your device formatted.
6. Now unplug your device and manually reset it.
i hope you will be happy after .. thanks

lg mytouch c800 bricked?

hi im pretty new here a friend of mine gave me her lg c800 mytouch to try and fix it for her.. not sure what she did she said she rooted the phone and the root was successful but i have a good idea that she doesnt know what she was doing..i will post a pic of the error screen im getting. but it says
E:Cant find misc
E:cant find misc
Finding update package...
E:unknown volume for path [sd:/download/adb_fastboot_and_other_tools.Zip]
E:Cant mount SDCARD:/download/adb_fastboot_and_other_tools.zip
Installation aborted
facory reset failed
restart factory reset..
now im far from a pro at this i know a lil more about computers and Ios devices..but ive rooted a few phones and to me it looks like she unzipped adb fastboot on her phone from her sd card??
ive tried holding F..A..vol down..and power..Nothing..
ive tried volume up .volume down and power still nothing..
BUT if i hold E..vol UP and power it brings me to a white screen that says S/W update
the big problem is the phone wont stay on long enough to do anything on the computer it stays on 3 sec. then reboots to same screen (computer says phone is unplugged) then phone just keeps restarting.
but the phone WILL stay on when i put it on the S/W update screen..but computer wont recognize the phone at all on that screen
ive tried the adb and fastboot commands but the phone wont stay recognized..it will recognize the phone and say thats its in recovery mode but when phone restarts it dont see phone no more..
well thanks ahead of time if anyone has any input or solution
and hopefully all this will make sense to someone lol
i think this pic will work.. if not ill try again

any ideas please?? or am i completely out of luck?

When you say:
delilah25 said:
it will recognize the phone and say thats its in recovery mode but when phone restarts it dont see phone no more..
Click to expand...
Click to collapse
...do you mean that you can successfully communicate with the phone over USB, but you only have 3 seconds? What way is the phone recognized? Is it visible to adb/fastboot?

post-mortem said:
When you say:
...do you mean that you can successfully communicate with the phone over USB, but you only have 3 seconds? What way is the phone recognized? Is it visible to adb/fastboot?
Click to expand...
Click to collapse
Yes In Adb device list it shows the phone and then says recovery..but after that I don't have enough time to type any other commands ..the phone is also recognized in "my computer" as removable device then when the phone restarts seconds later it says device unplugged ..and just keeps restarting on its own till I remove the battery...I just read on the forum in a post that Adb will recognize the phone if it's off but I remove the battery and put it back in and plug in USB and phone turns on and keeps restarting won't even let me turn it off!! I'm losing patience with this thing lol
But I don't get why the error mentions fastboot? Not my phone so if it's not fixable I don't really care but I'm just the stuborn type when it comes to fixing electronics ..again thanks ahead of time to anyone that helps cuz I'm completely lost on this one

Have you tried timing it to send a quick "adb reboot recovery"? If you can use fastboot, you can tell it to boot off a new, custom recovery img, without actually flashing it.

i have the same problem
post-mortem said:
Have you tried timing it to send a quick "adb reboot recovery"? If you can use fastboot, you can tell it to boot off a new, custom recovery img, without actually flashing it.
Click to expand...
Click to collapse
i used an app on the market to remove bloatware. i removed slacker and the app stated that after two reboots that everything would be fine and the app would be gone. after one reboot the phone has the same screen this gentlemans lady friend has. it looks like the app its looking for is no longer zip aligned properly. someone told me to rename a recovery image the error message to trick the bootloader into thinking the missing app is there. hes an app dev so i figured he knows whats what. ive tried everything the gentleman in this post said and more. hell i have two of these phones and rooted the other and made a backup of that phone and dragged the backup to an sd card and rebooted to see if any of the backed up system apks would trigger a successful reboot but to no avail. i have all the drivers i need and adb commands but nothing works because the phone doesnt stay connected to my pc long enough for anything. please reply with some knowledge. ive been scouring the web for at least a month. i was so happy when i came across this. i actually became a member just to post about this erroer (look up diabolus ae in the forum search field. my post is about 3 days old with a better pic of the screen message. i bought a galaxy s II but i want to give the lg to my son. please help or respond:cyclops:

diabolus ae said:
i used an app on the market to remove bloatware. i removed slacker and the app stated that after two reboots that everything would be fine and the app would be gone. after one reboot the phone has the same screen this gentlemans lady friend has. it looks like the app its looking for is no longer zip aligned properly. someone told me to rename a recovery image the error message to trick the bootloader into thinking the missing app is there. hes an app dev so i figured he knows whats what. ive tried everything the gentleman in this post said and more. hell i have two of these phones and rooted the other and made a backup of that phone and dragged the backup to an sd card and rebooted to see if any of the backed up system apks would trigger a successful reboot but to no avail. i have all the drivers i need and adb commands but nothing works because the phone doesnt stay connected to my pc long enough for anything. please reply with some knowledge. ive been scouring the web for at least a month. i was so happy when i came across this. i actually became a member just to post about this erroer (look up diabolus ae in the forum search field. my post is about 3 days old with a better pic of the screen message. i bought a galaxy s II but i want to give the lg to my son. please help or respond:cyclops:
Click to expand...
Click to collapse
Normally, if you want to flash a custom recovery through fastboot, people will tell you to run 2 commands:
fastboot flash recovery nameofimagefile.img
fastboot reboot recovery
Since you don't have time to execute those 2 commands, you can tell it to just boot from the .img file, without flashing over your current recovery. (This is actually proper form, as you can test if the .img file works properly without damaging your existing recovery.) The way you do that is to 1st copy a recovery .img file to the root of your SD card, then execute the following 1 command:
fastboot boot nameofimagefile.img
Since you only have ~3 seconds, type the command in, and wait for the right instant to hit enter on the keyboard. If the command is successfully sent to the phone, it will reboot into that .img.
See if that works for you. Good luck.

[Q] Soft bricked A200

Do not see a section for the A200..... Someone in A100 said I'd have better luck here.....
OK, so I soft bricked my A200 and need to USB connect to it, so I can use fastboot or some other recovery tool.
Problem is that when I plug the A200 into my computer, it grinds away for a bit then gives a driver failed to install red "X" message.
I've reloaded the Acer USB drivers a couple of time, but no joy there. I've tried two different computers, I've tried XP and W7, nothing seems to help. Looking in the device manager shows an error 10 (device can't start).
Since the PC at least recognizes the A200 when plugging in, I think if I can get the USB talking I can easily unbrick the A200.
When I power it on, it boots to the IconiaTab screen, but no further. It's been rooted and bootloader unlocked using HBWelch's Simple Tool. I can get into fastboot mode by using a convoluted (to me, at least) procedure, that takes 6 fingers to accomplish.
After rooting and UL'ing BL it worked fine for over 6 months. Tried to flash back to stock over the weekend, and that's when I bricked it.
I posted this same message over on Acertabletforums, but so far no response's. Moderator, if you don't mind, please merge my other thread over in the A100 section with this thread.
Help??
Boowho??

Do you know if CWM is available for your A200 ?
If your bootloader is unlocked, i think you can flash a boot or recovery via Fastboot

success anyThan
Shreps said:
Do you know if CWM is available for your A200 ?
If your bootloader is unlocked, i think you can flash a boot or recovery via Fastboot
Click to expand...
Click to collapse
Fastboot appears to need a working USB connection (thru drivers). When I run it on the PC, it hangs with the message "waiting for USB connection". This is with the tablet booted in "fastboot" mode.
I CAN get it to read from update.zip on the SD card. The update.zip I'm using is the completely stock firmware (ROM, recovery, etc).
It starts the update (Android with spinning wire frame ball), gets about 25% done and then the update fails with the "dead android" symbol.
Thanks
Boowho??

Problem solved..... Thanks. Was able to flash via update.zip on SD card.

One damn thing after another!!!
boowho said:
Problem solved..... Thanks. Was able to flash via update.zip on SD card.
Click to expand...
Click to collapse
Everything did work fine for a day. Now I cannot enter recovery using the hardware buttons.
Using an APK called "Quick Boot" I can easily boot into CWM from the home screen and everything is fine. Root is fine, bootloader unlocked properly, etc.
Everything acting as I would expect.... BUT....
Unfortunately, not being able to enter recovery from HARD boot pretty much makes any recovery worthless, right??
Anything besides hardware that could be causing this?? The volume rockers work just fine as volume controls.
Thanks
Boowho??

This problem solved too....... Brainfart!!!
Boowho??

[Q] HKC P776A Android tablet stuck in twrp/cwm bootloop

Ok I finally got this tablet rooted using some chinese oneclick root tool worked great do to it was the only kit that was able to root it and i installed supersu apk to replace to chinese version worked and i went to update supersu and hit the twrp (not knowing what it was at the tim stupid right i know lol) and now it is stuck in the twrp/cwm bootloop and i cant get into recovery mode when i try it says updating img blah blah and restarts back into the bootloop. It is running 4.1.1 JB and has a micro sd card slot.There is a pic in the atachment because i dont know how to upload it to this post but it is just a pic no "extras" are included no viruses maleware ect just a pic

parkourgamer said:
Ok I finally got this tablet rooted using some chinese oneclick root tool worked great do to it was the only kit that was able to root it and i installed supersu apk to replace to chinese version worked and i went to update supersu and hit the twrp (not knowing what it was at the tim stupid right i know lol) and now it is stuck in the twrp/cwm bootloop and i cant get into recovery mode when i try it says updating img blah blah and restarts back into the bootloop. It is running 4.1.1 JB and has a micro sd card slot.There is a pic in the atachment because i dont know how to upload it to this post but it is just a pic no "extras" are included no viruses maleware ect just a pic
Click to expand...
Click to collapse
Super old I know but my kids tablet is doing this now. Did you ever find a fix?

KilluminatiStyle said:
Super old I know but my kids tablet is doing this now. Did you ever find a fix?
Click to expand...
Click to collapse
Pro tip: Don't bumb old threads like this. You might not even have similar problems. Instead create a new thread regdaring your issue.
Now, post your tablet info HERE:
Root staus?
Can you boot in recovery? If yes what recovery do you have?
Tablet model
Android version
What happened
What have tried to fix it

janekmuric said:
Pro tip: Don't bumb old threads like this. You might not even have similar problems. Instead create a new thread regdaring your issue.
Now, post your tablet info HERE:
Root staus?
Can you boot in recovery? If yes what recovery do you have?
Tablet model
Android version
What happened
What have tried to fix it
Click to expand...
Click to collapse
Root Status = ROOTED
I cannot boot into recovery mode (but when i try i get this, look in pic 2&3)
Tablet Type = HKC (NOT HTC) p776a
ANDROID Version I think (98% shure) is 4.1.1 beta JB
What happened = A few years ago 2013 i think a got this tablet then i learned about rooting, roms, and such so i spent the next year or two trying to root the tablet. I finally got it rooted with a chinese root program and all was well (i don't remember the name of the program) then there was a update for su and i pressed the twrp/cwm mode on accident (I think I was talking to someone at the time) and now it does what is shown in the image 1 it is on some boot loop. When I try to access the hboot menu it does what is shown in these images 2&3. Also my tablet has a MicroSD card slot and the battery can not be taken out. the regular bootloop picture is image file 1 that is what it looks like when it does its continuous bootloop and P.S. the tablet turns off and on automatically during the bootloop. To try and fix it i have let it do its bootloop for hours on end turn it on and off tried looking for a compatible rom (to no avail) and let the battery completely die that is about it.

parkourgamer said:
Root Status = ROOTED
I cannot boot into recovery mode (but when i try i get this, look in pic 2&3)
Tablet Type = HKC (NOT HTC) p776a
ANDROID Version I think (98% shure) is 4.1.1 beta JB
What happened = A few years ago 2013 i think a got this tablet then i learned about rooting, roms, and such so i spent the next year or two trying to root the tablet. I finally got it rooted with a chinese root program and all was well (i don't remember the name of the program) then there was a update for su and i pressed the twrp/cwm mode on accident (I think I was talking to someone at the time) and now it does what is shown in the image 1 it is on some boot loop. When I try to access the hboot menu it does what is shown in these images 2&3. Also my tablet has a MicroSD card slot and the battery can not be taken out. the regular bootloop picture is image file 1 that is what it looks like when it does its continuous bootloop and P.S. the tablet turns off and on automatically during the bootloop. To try and fix it i have let it do its bootloop for hours on end turn it on and off tried looking for a compatible rom (to no avail) and let the battery completely die that is about it.
Click to expand...
Click to collapse
Okay. Just a few more questions.
Does your tablet boot into recovery (picture 1) even if you try to boot normally? (fastboot maybe)
Can you boot into anything else other than recovery? (try different button combinations)
Does ADB recognise your tablet when it's in recovery mode? (if you don't know about this, just post your computer OS and if you have ADB/Fastboot drivers installed on your PC)
If the anwser the the first question is no:
Does ADB recognise the device while it's in the bootloop.

janekmuric said:
Okay. Just a few more questions.
Does your tablet boot into recovery (picture 1) even if you try to boot normally? (fastboot maybe)
Can you boot into anything else other than recovery? (try different button combinations)
Does ADB recognise your tablet when it's in recovery mode? (if you don't know about this, just post your computer OS and if you have ADB/Fastboot drivers installed on your PC)
If the anwser the the first question is no:
Does ADB recognise the device while it's in the bootloop.
Click to expand...
Click to collapse
sorry, i forgot to clarify the hboot. it pops up the "words" or whatever then automatically reboots there is no way to select options or keep the device on so i cant use fastboot unless there is a way i dont know of. P.S. the tablet restarts automatically so it is on for like 25 maybe 30 seconds then shuts off then turns back on and repeats till the battery is dead. My thought originally to fix it was to get a rom put it on the sdcard and see if that works but the manufacture does not supply the rom for my model only the p771a. and the only physical buttons are the home, power, the pinhole reset button, the volume and such buttons are virtual on the screen when it is fully on. And picture 1 i dont fully know what that screen symbol is the hboot one is similar but not that but yes it does but to picture 1 nomadder what i do even if i try to get to hboot menu. Sorry if this is a "little" scattered having explaining it. If it would help i can make a video and rar it and upload it here.

parkourgamer said:
sorry, i forgot to clarify the hboot. it pops up the "words" or whatever then automatically reboots there is no way to select options or keep the device on so i cant use fastboot unless there is a way i dont know of. P.S. the tablet restarts automatically so it is on for like 25 maybe 30 seconds then shuts off then turns back on and repeats till the battery is dead. My thought originally to fix it was to get a rom put it on the sdcard and see if that works but the manufacture does not supply the rom for my model only the p771a. and the only physical buttons are the home, power, the pinhole reset button, the volume and such buttons are virtual on the screen when it is fully on. And picture 1 i dont fully know what that screen symbol is the hboot one is similar but not that but yes it does but to picture 1 nomadder what i do even if i try to get to hboot menu. Sorry if this is a "little" scattered having explaining it. If it would help i can make a video and rar it and upload it here.
Click to expand...
Click to collapse
here is the video

parkourgamer said:
sorry, i forgot to clarify the hboot. it pops up the "words" or whatever then automatically reboots there is no way to select options or keep the device on so i cant use fastboot unless there is a way i dont know of. P.S. the tablet restarts automatically so it is on for like 25 maybe 30 seconds then shuts off then turns back on and repeats till the battery is dead. My thought originally to fix it was to get a rom put it on the sdcard and see if that works but the manufacture does not supply the rom for my model only the p771a. and the only physical buttons are the home, power, the pinhole reset button, the volume and such buttons are virtual on the screen when it is fully on. And picture 1 i dont fully know what that screen symbol is the hboot one is similar but not that but yes it does but to picture 1 nomadder what i do even if i try to get to hboot menu. Sorry if this is a "little" scattered having explaining it. If it would help i can make a video and rar it and upload it here.
Click to expand...
Click to collapse
1. Download fixcache.bat.zip on your computer. Extract cachefix.bat from the file.
2. Run it. It should say just "Waiting for device..."
3. Now reset your tablet with the reset button and QUICKLY plug it into the computer and wait a few minutes.
Now try to get to that text in picture 1 and tell me what happends.
Also post the text you see on the computer from the file I sent you.
Tell me if

janekmuric said:
1. Download fixcache.bat.zip on your computer. Extract cachefix.bat from the file.
2. Run it. It should say just "Waiting for device..."
3. Now reset your tablet with the reset button and QUICKLY plug it into the computer and wait a few minutes.
Now try to get to that text in picture 1 and tell me what happends.
Also post the text you see on the computer from the file I sent you.
Tell me if
Click to expand...
Click to collapse
this is what happens to the .bat fikle when i open it

parkourgamer said:
this is what happens to the .bat fikle when i open it
Click to expand...
Click to collapse
also would there be any way to pop the hood and flip a switch to reset it like on a pc tower?

parkourgamer said:
also would there be any way to pop the hood and flip a switch to reset it like on a pc tower?
Click to expand...
Click to collapse
Umm, you said there is a reset button on the tablet so pressing that would probably reset it.
The error you are getting is because adb is not installed on your PC. Use this simple adb installer to instal adb. When installing just press yes to everything. MAKE SURE THE PHONE IS PLUGGED IN THE COMPUTER WHILE INSTALLING AND THAT IT'S ON!
Now run the file again.
If you want you can add me on Skype: janekmuric
---------- Post added at 13:51 ---------- Previous post was at 13:26 ----------
If you want to know what is happening:
You are in what's called a recovery bootloop. It's when you can't get out of the recovery. What is happening in this case is that Superuser app tried to install it's binaries via recovery. Because some people don't know how to install binaries manually, the app puts a file on the cache partition so the recovery automaticly installs the zip upon booting. Now, this would be good so you don't mess up your device, but the zip file it's trying to install is faulty so it just breaks the device.
My attept at fixing this is to delete the /cache/recovery folder so it doesn't just install the file, and instead boots into a working recovery.

janekmuric said:
Umm, you said there is a reset button on the tablet so pressing that would probably reset it.
The error you are getting is because adb is not installed on your PC. Use this simple adb installer to instal adb. When installing just press yes to everything. MAKE SURE THE PHONE IS PLUGGED IN THE COMPUTER WHILE INSTALLING AND THAT IT'S ON!
Now run the file again.
If you want you can add me on Skype: janekmuric
---------- Post added at 13:51 ---------- Previous post was at 13:26 ----------
If you want to know what is happening:
You are in what's called a recovery bootloop. It's when you can't get out of the recovery. What is happening in this case is that Superuser app tried to install it's binaries via recovery. Because some people don't know how to install binaries manually, the app puts a file on the cache partition so the recovery automaticly installs the zip upon booting. Now, this would be good so you don't mess up your device, but the zip file it's trying to install is faulty so it just breaks the device.
My attept at fixing this is to delete the /cache/recovery folder so it doesn't just install the file, and instead boots into a working recovery.
Click to expand...
Click to collapse
That would be great but i cant keep my tablet on for more than like 30 seconds before it auto shuts off and it automatically tries to go into recovery when i add power to the device it wont just boot to the OS

parkourgamer said:
That would be great but i cant keep my tablet on for more than like 30 seconds before it auto shuts off and it automatically tries to go into recovery when i add power to the device it wont just boot to the OS
Click to expand...
Click to collapse
30 seconds is more than enough. Especally with an automated script like the one I sent you.
The first thing we have to do to fix your tablet is to establish a working ADB connection. Use the ADB installer i sent you. And look up on how to install Google USB driver for ADB.

janekmuric said:
30 seconds is more than enough. Especally with an automated script like the one I sent you.
The first thing we have to do to fix your tablet is to establish a working ADB connection. Use the ADB installer i sent you. And look up on how to install Google USB driver for ADB.
Click to expand...
Click to collapse
ok will try

boot loop and no command found !

Hi
so the problem started like this
i had my nexus 5 rooted and it was good
then i decided to unroot the device , so i searched i found this kingo root app , and by mistake tried to root my device
it did not work as the app said , so i ignored the app , and kept using my phone like normal , but then my phone shuts down cuz of battery
no problem , i connected it to the charger , but then it keeps on boot loop , it wont boot , and i tried to flash it but i cant
also when i go to bootloader and then recovery mode , it says no command found
PS : the only time my PC can see my nexus in USB debugging mode is when its in boot loop​

khird said:
Hi
so the problem started like this
i had my nexus 5 rooted and it was good
then i decided to unroot the device , so i searched i found this kingo root app , and by mistake tried to root my device
it did not work as the app said , so i ignored the app , and kept using my phone like normal , but then my phone shuts down cuz of battery
no problem , i connected it to the charger , but then it keeps on boot loop , it wont boot , and i tried to flash it but i cant
also when i go to bootloader and then recovery mode , it says no command found
PS : the only time my PC can see my nexus in USB debugging mode is when its in boot loop​
Click to expand...
Click to collapse
How are you trying to flash your phone? Is it through the factory images here: https://developers.google.com/android/nexus/images ? This is usually the easiest way to flash the factory images, but your phone may not work with these in the state it is right now.
As for the "no command found", that is normal behavior for stock recovery. In fact, there isn't much you can do with the stock recovery and you may be used to a custom recovery like TWRP or CWM.
What I would try is to enter recovery mode, where the dead Android appears. Then, hold the volume up and power button for about three seconds. After this, you can let go of the volume up, while still holding the power button. After a while, commands should appear and you can try a factory reset, or maybe a simple cache wipe might work for you.
If that still doesn't work, flash the factory images from the link I sent while on the "no command page". In that state, your phone should be recognized by the computer and you should be able to flash properly. You may have to install adb on you computer and drivers if that isn't already done.
Best of luck!