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[Q] Help, with boot loop

Hi everyone!
I need, please help with a Chinese phone I just bought.
Some information about the phone:
MC603CH, board cellonsz73_gb, MT6573 ARMv6 797.90mhz, MC7305.zheng.V1.en display, brand Yusu, total 214 Mb RAM, 130 Mb internal space, external 3.7 Gb, Imagination Technologies GPU, OpenGL ES 2.0, currently running Android 2.3. 5 Kernel 2.6.35.7.
In Windows 8 on Mac and was recognized as HTC (Windows as My HTC). Turns out I can not stand just looking for that kind of device without having the urge to start moving in everything and in every way (especially since it's my first Android). I did root, installed a bunch of app to change the system and found a script that makes the Apps recognize a partition EXT4 like to have more internal space to install applications. The last two things I did while he was connected were able to install BusyBox to make the system recognize the init.de folder so I can run scripts in the beginning of the section and, silly me, make a run in the script.
He was pretty one, running everything is fast with the ROM that was running, which it came (modified to look like iOS), but after running the script, it restarted and went into boot loop. Then I try to recover the poor, and went hunting for information ... flash rom did (I was afraid to try installing and kill him at once), then I found a video that said I could try clearing the cache, I tried, I removed the USB cable from the computer to wait for the battery dies (it does not restart the button is in loop) and nothing.
I found another video that told me to go back to factory settings purchases that could go right.
The problem is I can not get into recovery mode by buttons (already tried all possible combinations and does not enter the recovery). I managed, after Google searches, and find the adb installed, managed to make it into the recovery by adb! Then I thought I could do everything that was needed to revive the pet. I fell to the tale of the factory settings, and I gave myself badly. Now the adb condegue not recognize the phone, I believe it is because he is no longer on usb debuging (factory settings), so now I'm here at all in the stirring cell, trying to find a way to disconnect the battery and do not think (believe only a technician can or someone with technical knowledge) so I can try some procedures using software I found (SP flash tools, tools mtkdroid, Android AIO flasher, etc.). To get drivers that worked in Portcom has been very difficult, I tried several until you find what the Windows install left. Well, it's more or less what is happening to me. I hope you can find someone to help me on this, because, as I said, it's my first android and I can not buy another one for a long time (I have a wife and four children, i can not spend too much ) and it cost me R$ 590.00 (Brazil) and not just pay. If anyone can help me, I am very grateful.
God bless you. Sorry for english from Google Translator.

Hej,
If you just can get into the recovery you could flash any rom made for your phone, just get the zip on your SD card and install through recovery.
Try to get into recovery through fastboot if your phone is supported and next time you root your android just do a nandroid backup.

dR.BaNaNe said:
Hej,
If you just can get into the recovery you could flash any rom made for your phone, just get the zip on your SD card and install through recovery.
Try to get into recovery through fastboot if your phone is supported and next time you root your android just do a nandroid backup.
Click to expand...
Click to collapse
Hi Dr.Banane! Thanks for responding!
The point is that I can not go into recovery mode at all the buttons on this phone.
The only ways in which I saw the screen of recovery mode this cell were: 1 by 2 by adb root manager when
I was with usb debugging enabled. I need to figure out exactly how to enter the recovery mode, because I think it
I will be able to access adb again and be able to delete the folder init.d script or do some flash ROM.
By the way, does the ROM Sophone MT6575 will work on it or kill it once?
Thank you. God bless you.

learned alot from your question

Wppley said:
Hi Dr.Banane! Thanks for responding!
The point is that I can not go into recovery mode at all the buttons on this phone.
The only ways in which I saw the screen of recovery mode this cell were: 1 by 2 by adb root manager when
I was with usb debugging enabled. I need to figure out exactly how to enter the recovery mode, because I think it
I will be able to access adb again and be able to delete the folder init.d script or do some flash ROM.
By the way, does the ROM Sophone MT6575 will work on it or kill it once?
Thank you. God bless you.
Click to expand...
Click to collapse
Look at this and maybe it will help you:
http://forum.xda-developers.com/showthread.php?t=1929957
You have to flash a recovery.img and boot.img with computer but i don´t know if it´s possible without USB-debugging OFF, but atleast you can try.

dR.BaNaNe said:
Look at this and maybe it will help you:
http://forum.xda-developers.com/showthread.php?t=1929957
You have to flash a recovery.img and boot.img with computer but i don´t know if it´s possible without USB-debugging OFF, but atleast you can try.
Click to expand...
Click to collapse
Ok, thanks Dr. I will try this.
Please tell me someone knows a way to get into recovery mode?
Edit: I think i found the model of my phone: Sophone 4s v5 or Gooapple v5, I'm not sure.
Thanks.
God bless you.

Sorry for flood, but anybody can help me please? Think i loose my recovery. What can i do? Please!
Thanks,
Edit 16 02 13: I have in my hands another one cell ecxately same of mine, but im not able to get a backup of their rom, please help me, im almost in the goal!
Thanks. God bless you.
Edit 17 02 13: I would like to thank Dr. Banane and all the help that friends here from XDA have done to help me.
Thank God I managed to grab the rom from a device identical to mine and restore my Android. I learned a lot in those days I tried and tried and could help in forums with this topic: http://forum.xda-developers.com/showthread.php?t=1683883.

BRICKED MY DEVICE!!! Please HELP!

Hello good kind hearted fellow reading this,
I was trying to root my Old NVIDIA Shield tablet LTE which I foolishly updated to 6.0 so I could remove the tegra.OTA apk and prevent the kill switch.
I first followed the instructions in this thread: http://forum.xda-developers.com/shield-tablet/general/how-to-root-nvidia-tablet-android-6-0-t3280671 then lost Wifi.
I then decided to follow the instructions in this thread: http://forum.xda-developers.com/shield-tablet/general/unofficial-update-original-shield-t3281541, then after step 3 where I flashed the blob.img, I rebooted the tablet as directed, but now nothing happens. It won't come on so I can proceed with the procedure, It is not recognised in ADB, It only shows up in my device manager as APX when I plug it in and shows the green/orange light which indicates charging. The screen remains BLACK>
The bootloader is already unlocked
Is all hope lost??? Is there anyway to revive this? PLEASE HELP ME...
I have read through threads which i searched for using the keyword "BRICK", but I dont seem to be able to find anything that can help.
Thanks a bunch!

Only NVIDIA can help you, once your Tablet does not boot into the bootloader
http://forum.xda-developers.com/shield-tablet/help/help-help-bricked-shield-tablet-original-t3313428
also:
http://forum.xda-developers.com/shield-tablet/general/kill-kill-switch-shield-tablet-xx-t3179489

njhuiz said:
Only NVIDIA can help you, once your Tablet does not boot into the bootloader
http://forum.xda-developers.com/shield-tablet/help/help-help-bricked-shield-tablet-original-t3313428
also:
http://forum.xda-developers.com/shield-tablet/general/kill-kill-switch-shield-tablet-xx-t3179489
Click to expand...
Click to collapse
*tears*

Just call NVIDIA and talk to them. If it's only a software problem (flashing gone bad), they can fix it in 10 minutes. As far as I can remember somebody in the first thread I linked, talked about returning the tablet for repair after talking to them.

Lenovo S856 China Unbricking tutorial

Problem: You have purchased a China Lenovo S856 smartphone and tried to flash ROW ('Rest of World') firmware to it for whatever reason. You now have a softbricked phone that won't boot past the Lenovo screen.
Solution: Download the following files, which are a little tutorial with pictures, as well as the correct China firmware for your s856 and the Flashing tool to use....https://drive.google.com/open?id=0B6knvSQRiKPzQTMtaXFXZEFNbHc https://drive.google.com/open?id=0B6knvSQRiKPzRTk4ZTB3c1VDdzA https://drive.google.com/open?id=0B6knvSQRiKPzWVA2UENuY1NYTkk
All the solutions I have seen so far were sketchy at best and very difficult to comprehend, let alone use to unbrick your phone. This is what worked for me, and my attempt to help anyone else with the above problem.
That is all, and good day to you.

Thanks for your help, but my problem looks very difficult now, because the system cannot recognize the phone and the phone refuse to boot on. What do you advice?
way2aware said:
Problem: You have purchased a China Lenovo S856 smartphone and tried to flash ROW ('Rest of World') firmware to it for whatever reason. You now have a softbricked phone that won't boot past the Lenovo screen.
Solution: Download the following files, which are a little tutorial with pictures, as well as the correct China firmware for your s856 and the Flashing tool to use....https://drive.google.com/open?id=0B6knvSQRiKPzQTMtaXFXZEFNbHc https://drive.google.com/open?id=0B6knvSQRiKPzRTk4ZTB3c1VDdzA https://drive.google.com/open?id=0B6knvSQRiKPzWVA2UENuY1NYTkk
All the solutions I have seen so far were sketchy at best and very difficult to comprehend, let alone use to unbrick your phone. This is what worked for me, and my attempt to help anyone else with the above problem.
That is all, and good day to you.
Click to expand...
Click to collapse

Prajiro said:
Thanks for your help, but my problem looks very difficult now, because the system cannot recognize the phone and the phone refuse to boot on. What do you advice?
Click to expand...
Click to collapse
Hello...
My system did not recognize my phone, either. Nor would it boot up... it was bricked. This tutorial is for people who are exactly in your situation. I would suggest downloading the files I have uploaded, and reading the tutorial.

way2aware said:
Hello...
My system did not recognize my phone, either. Nor would it boot up... it was bricked. This tutorial is for people who are exactly in your situation. I would suggest downloading the files I have uploaded, and reading the tutorial.
Click to expand...
Click to collapse
Finally got the process started,...but after 7s I got and error message Reached the end of the file.(0x80070026: Receiving hello packet)
Could it be my PC (win 10 32 bit) problem or what do you think?

This happened to me as well, the first and second time I tried the flash. There is a trick which worked for me... I pulled the battery out and put it back in and while holding the volume 'up' button, I plugged my phone into my computer usb port and let windows install the driver. It took a few seconds and then I clicked 'refresh' on the Miflash window, which I had left on. At this point the 'flash' button became available and I clicked on it. This time the flash was successful. Try it.

[Completed] Hard Bricked in a peculiar manner

Hi xda,
So I had a soft bricked Micromax Canvas a290 which boot looped and couldnt access recovery. I flashed it with a stock ROM. Now the phone is hard bricked, and I'm thinking probably because the rom I downloaded had issues. I looked up another stock rom from xdafirmware, and am trying to follow a tutorial on youtube on flashing a hard bricked device.
The issue I have here is this:
The tutorial says the phone is supposed to connect and disconnect every 7-8 seconds (evident by the sound windows makes when usb device is connected and disconnected).
The thing is, when I connect my device windows makes the connected sound, but the device doesnt disonnect. SP flash tool cant flash my phone. I have tried any and every button combination, but they dont seem to help.
I am an tech enthusiast myself, and I have flashed a lot of mtk soft bricked devices before, but I am totally stumped here.
Can anyone help?? Any ideas whats happening? Any help is greatly appreciated. Thank you.

Tiks_Baralous said:
Hi xda,
So I had a soft bricked Micromax Canvas a290 which boot looped and couldnt access recovery. I flashed it with a stock ROM. Now the phone is hard bricked, and I'm thinking probably because the rom I downloaded had issues. I looked up another stock rom from xdafirmware, and am trying to follow a tutorial on youtube on flashing a hard bricked device.
The issue I have here is this:
The tutorial says the phone is supposed to connect and disconnect every 7-8 seconds (evident by the sound windows makes when usb device is connected and disconnected).
The thing is, when I connect my device windows makes the connected sound, but the device doesnt disonnect. SP flash tool cant flash my phone. I have tried any and every button combination, but they dont seem to help.
I am an tech enthusiast myself, and I have flashed a lot of mtk soft bricked devices before, but I am totally stumped here.
Can anyone help?? Any ideas whats happening? Any help is greatly appreciated. Thank you.
Click to expand...
Click to collapse
Greetings and welcome to assist. I can find very little information for your device apart from this thread which may help, can you connect to the device just using fastboot ?
https://forum.xda-developers.com/android/general/tutorial-micromax-canvas-knight-a290-t2872896
Good Luck
Sawdoctor

[Completed] Doogee X5 Pro Bricked

Ok, i have a doogee x5 pro phone and i tried to root it by flashing twrp recovery using sp flash tools. While flashing i got the error "PMT Changed for the rom it must be download". So i did a small research on internet and i found out that i needed to format everything except bootloader. This succeded. So after that i tried to install the firmware with this succeding to. Unfortunately the time i tried to turn phone on it was dead. SP Flash Tools wont detect it anymore. Please help me cause the phone is not mine and its brand new! I can rate my self as moderate android user. :crying:

i think i have a bigger problem... I downloaded a stock rom for doogee max pro(cause i just realised it wasnt just pro it was max pro) and it didnt seem to be recognised again. Any help would be appreciated. I constantly keep trying to raise it from the deads. Thanks!

Ap0s said:
i think i have a bigger problem... I downloaded a stock rom for doogee max pro(cause i just realised it wasnt just pro it was max pro) and it didnt seem to be recognised again. Any help would be appreciated. I constantly keep trying to raise it from the deads. Thanks!
Click to expand...
Click to collapse
On mtk devices a preloader is independently installed, it should be almost impossible to destroy, I owned a x5 pro and had best success to flash it with sp flash by taking out the battery, press flash button and plug it in...
The second huge issue I see is when you used the specific flash tool format option you very, very likely killed the nvram partition which contained the imei, so you'll have to fix this too by generating a new one and using mtk engineer mode which is well described and to find on Google..
But let's go step by step. Check without battery, or if it's a non replaceable you'll need find the reset button..

i have tried before without battery and i tried just now but nothing. Its very weird it was detected before and now no in same and another machine. I am pretty confused and stressed. Hope i didnt do any physical damage.. :crying:. THANKS!

starting to get pretty stressed omg! and is there a difference between MT6737M and MT6737?

i came to the point im starting to lose my mind... tried everything i could, i have 5 days left to repair this phone and i dont wanna pay 85 euros for this. SP Flash Tools wont detect the phone. Tried almost 5 different scatter files,2 different PCs and different mtk drivers. Im losing my mind already

UPDATE: I almost fixed it! I had flashed wrong preloader so phone wasn't recognized by SP Flash Tool. I fixed preloaded with a little trick from here: link. After that i flashed stock rom downloaded from doogee.cc but phone will not boot resulting in a total black screen. When i hot Power + Vol Up it takes me to another screen:
Select Boot Mode:
Recovery
Bootloader
Normal
Doesn't matter which boot mode i choose i just get a total black screen which means i get nothing. Idk what is happening! Any further help would be appreciated! I constantly try to bring it back working with little success and small improvements.

Last UPDATE: FIXED my phone had no juice left inside so couldnt complete boot proccess. Now its all good running Btw someone must pin this META trick link i send on my previous post cause im sure more people out there have preloader issues!!! Thank you everyone!!

Sam Nakamura said:
On mtk devices a preloader is independently installed, it should be almost impossible to destroy, I owned a x5 pro and had best success to flash it with sp flash by taking out the battery, press flash button and plug it in...
The second huge issue I see is when you used the specific flash tool format option you very, very likely killed the nvram partition which contained the imei, so you'll have to fix this too by generating a new one and using mtk engineer mode which is well described and to find on Google..
But let's go step by step. Check without battery, or if it's a non replaceable you'll need find the reset button..
Click to expand...
Click to collapse
And yes i couldnt flash it with battery only with!