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[Q] Goclever R75 (7500) - boot freeze (bootloop ? )

Hello. After factory reset my goclever does not stand up. It freezes at android logo and nothing happens later (no reset, just android logo). I think it might be because after installing apex pro i deleted stock launcher. Device manager sees it as ' Full AOSP on Rk29sdk ' (but cannot copy anything to device) and ADB sees no device.
Is there any way to do something ? Christmas are soon, so i will not send it to service cenrte.

haseo9119 said:
Hello. After factory reset my goclever does not stand up. It freezes at android logo and nothing happens later (no reset, just android logo). I think it might be because after installing apex pro i deleted stock launcher. Device manager sees it as ' Full AOSP on Rk29sdk ' (but cannot copy anything to device) and ADB sees no device.
Is there any way to do something ? Christmas are soon, so i will not send it to service cenrte.
Click to expand...
Click to collapse
You can't access recovery or download mode too ?

karimkahale said:
You can't access recovery or download mode too ?
Click to expand...
Click to collapse
Goclever hasn't published any R75 firmware yet. Also this tablet doesn't have any physical buttons except power switch. On my native language forum was sometime ago rumor that on downside motherboard is switch which combination with power button gives recovery menu. Personally i tried various combinations but didn't worked for me.

Any ideas ?

haseo9119 said:
Any ideas ?
Click to expand...
Click to collapse
Hello.
Which version of the device do you have?
7500
or R75
Those seems to be the same but are different.
I have stock android version for both
for 7500 - original, unrooted ( from a Russian site - don't remember)
for R75 - original, rooted ( a dump created by me from my device when I have received it)
Both works, were tested by me on my R75.
The firmware of 7500 flashed on R75 works, but you won't be able to use the capacitive buttons (as I told you are different).
The flash option is very simple:
1. Copy two files on the root of the sd card
2. Insert the card in the card slot of the device.
3. The flashing process will continue automatically.
Just tell me which one you need and a place where to upload the needed firmware. I can do the upload this weekend.
Regarding ADB, hmm... this is strange. I have done the same thing as you (deleted the launcher and restore to default) but adb was working with device in the android logo state.
I'm using Windows 8 and I have installed the device as test ADB device (from windows drivers).
Bye.
Edit:
This is the link for R75 rooted firmware.
http://www.sendspace.com/file/0fhask
I hope it helps you.
Bye.
Edit:
This is the link for GoClever tab 7500
http://www.sendspace.com/file/shrso4
Bye.

On the back he have written that he's tab 7500. Soon i will try to flash him with your 7500 image. Hope it will work ^^ Thank you very much.

Everything on first look is working on. Except wifi card, which doesn't turning on.
/update
R75 software fixed it. Don't trust manufacturer anymore.

haseo9119 said:
Everything on first look is working on. Except wifi card, which doesn't turning on.
/update
R75 software fixed it. Don't trust manufacturer anymore.
Click to expand...
Click to collapse
its not working with me. i have kingston microsd card 8gb and i put 7500 image on root of the card.then, i started the tablet but nothing happens. it still show ANDROID logo and wont flash,please help!!!

goclever
severijan said:
its not working with me. i have kingston microsd card 8gb and i put 7500 image on root of the card.then, i started the tablet but nothing happens. it still show ANDROID logo and wont flash,please help!!!
Click to expand...
Click to collapse
hello
this may help some one later
to get into recovery if your R75 table wont boot you have to take it apart the button is on the underside of the board behind the screen (silly place to put it) i have being talking to goclever support and more firmwares are going to be added to the site. if you want yours adding send them an email requesting it (one may not be enough ) i have just had this problem and after a month they agreed to take it back and have reflashed it for me
hope this helps someone

[Completed] [Q] touch not working, cannot flash img .... bricked tablet?

hello everybody...
i have a (spanish jazztel) i-joy 10" tablet, cortex a7 quad core.
i made a mess with titanium backup and when tried to recover factory settings i realized that i had screwed the recovery data.
system would boot up, tablet would work but with many errors and "stopped working" pop ups.
i looked for a stock rom just to find out there is NONE in the WHOLE INTERNET!!!
then, googling here and there i read about some compatible roms, from allwinner, kalley and other chinese brands.
i downloaded all img files i could find, i flashed them correctly with phoenix usb pro, one after another.
first two worked well except for the cameras, that wouldnt work.
then i tried ICOU10GT firmware, flashed correctly...but touch DOES NOT work, i cannot go any further from welcome screen since the touch screen is not recognized.
i am 100% sure is not a hardware problem, all physical buttons work, screen works but not touch.
since i cannot reach the "enable usb debug mode" option i cannot flash any other img.
when entering recovery mode, if i choose update from adb the tablet is not fully recognized by windows (driver says device cannot start).
i´ve tried sd burning with phoenixcard but doesnt work either, tablet doesnt boot up from external sd card.
is there any way to recover this working-but-bricked tablet?
please help!!!
------------------
if there is not....is there a 100% safe and sure way to commit a "perfect murder" with the tablet to send it to post-service and being able to claim "it just stopped working" and them not being able to see i flashed it? i guess you know what i mean.

planetapluton said:
hello everybody...
i have a (spanish jazztel) i-joy 10" tablet, cortex a7 quad core.
i made a mess with titanium backup and when tried to recover factory settings i realized that i had screwed the recovery data.
system would boot up, tablet would work but with many errors and "stopped working" pop ups.
i looked for a stock rom just to find out there is NONE in the WHOLE INTERNET!!!
then, googling here and there i read about some compatible roms, from allwinner, kalley and other chinese brands.
i downloaded all img files i could find, i flashed them correctly with phoenix usb pro, one after another.
first two worked well except for the cameras, that wouldnt work.
then i tried ICOU10GT firmware, flashed correctly...but touch DOES NOT work, i cannot go any further from welcome screen since the touch screen is not recognized.
i am 100% sure is not a hardware problem, all physical buttons work, screen works but not touch.
since i cannot reach the "enable usb debug mode" option i cannot flash any other img.
when entering recovery mode, if i choose update from adb the tablet is not fully recognized by windows (driver says device cannot start).
i´ve tried sd burning with phoenixcard but doesnt work either, tablet doesnt boot up from external sd card.
is there any way to recover this working-but-bricked tablet?
please help!!!
------------------
if there is not....is there a 100% safe and sure way to commit a "perfect murder" with the tablet to send it to post-service and being able to claim "it just stopped working" and them not being able to see i flashed it? i guess you know what i mean.
Click to expand...
Click to collapse
In the edit comment you wrote "Last edited by planetapluton; 28th May 2015 at 07:44 AM. Reason: problem solved!" This thread will be closed.
If you have another issue with this device, please post in Android Q&A, Help & Troubleshooting

Chuwi vi8 android boot loop

hello
so last time i wanted to install that "touch fix" for my Chuwi vi8, after a reboot my tablet wasn't able to boot anymore, it just won't stop to reboot, i can still boot to Windows with lock+up volume + home button, i can also go in the stock recovery mode, yes i already tried factory reset and it didn't worked, how can i fix it ?
i can also get clockwork mode but i just have error closed... i installed all the drivers i was able to found but no one fixed the "error closed" when using sideload, also i don't know WHERE IS THE STOCK ROM...
I have this www needrom com download chuwi-vi8-dual-os
"file is too big" so i format in NTFS but then the tablet won't recognize it, and seems like it's the WINDOWS ROM i don't need the WINDOWS ROM I JUST NEED THE STOCK ANDROID ROM
i've been trying to fix this since MONTHS, tried yesterday, it took my whole day today and yesterday STILL NOTHING.
i reposted this here beacause i think i wasn't in the good category sorry i'm new
IF someone can REALLY HELP ME, do i'll have to PAY SOMEONE to fix my tablet ??? Like really, i already posted this in december no one answered me...

Ok, so it can't be fixed, great ! Thanks ! XDA brokes my device and won't repair it....

[Completed] BSOD on Onda V919 3G Air Dual OS

Hello! This is my frist post.. I hope someone here can help me..
Yes, Onda has his own forum, but is almost dead :crying:
So, here's my problem:
I have a Onda V919 3G Air Dual OS with 64GB of storage.
I tried to install Remix Os on it, doing this, I deleted windows 10. I knew it would happen, but I thought I had no problems installing it again...
So I put the Windows 10 ISO on an USB, connected it to the tablet and using an external keyboard I boot the tablet with the USB.
For a second, all seems working, but suddenly I have a blue screen with "acpi_bios_error". (maybe I can make a video about this)
I made some research online and:
- I tried other ways to create the windows USB, without luck.
- Seems I can update the BIOS only through Windows... And seems I have already the last BIOS (I'm not 100% sure)
Other infos:
- I tried messing up something with the bios, without luck. Anyway I reset it.
- I tried installing Linux, without luck.. I'll try again and again.
- This guide* says that I should see "windows install" when I press F7, but I don't see it.. even if I follow all the steps.
*= ondaforum dot com/topic/2940-v919-3g-air-dual-os-windows-81-or-10-fresh-install-from-usb/
Thanks!

Lombrollo said:
Hello! This is my frist post.. I hope someone here can help me..
Yes, Onda has his own forum, but is almost dead :crying:
So, here's my problem:
I have a Onda V919 3G Air Dual OS with 64GB of storage.
I tried to install Remix Os on it, doing this, I deleted windows 10. I knew it would happen, but I thought I had no problems installing it again...
So I put the Windows 10 ISO on an USB, connected it to the tablet and using an external keyboard I boot the tablet with the USB.
For a second, all seems working, but suddenly I have a blue screen with "acpi_bios_error". (maybe I can make a video about this)
I made some research online and:
- I tried other ways to create the windows USB, without luck.
- Seems I can update the BIOS only through Windows... And seems I have already the last BIOS (I'm not 100% sure)
Other infos:
- I tried messing up something with the bios, without luck. Anyway I reset it.
- I tried installing Linux, without luck.. I'll try again and again.
- This guide* says that I should see "windows install" when I press F7, but I don't see it.. even if I follow all the steps.
*= ondaforum dot com/topic/2940-v919-3g-air-dual-os-windows-81-or-10-fresh-install-from-usb/
Thanks!
Click to expand...
Click to collapse
Hello and welcome to xda-assist,
Unfortunately I can only redirect you to general help forums where you might be able to find help
http://forum.xda-developers.com/android/help
&
http://forum.xda-developers.com/general/help
Good luck

Sam Nakamura said:
Hello and welcome to xda-assist,
Unfortunately I can only redirect you to general help forums where you might be able to find help
http://forum.xda-developers.com/android/help
&
http://forum.xda-developers.com/general/help
Good luck
Click to expand...
Click to collapse
Thanks but I think now my tablet is dead.
I changed a setting on the BIOS and now it does not even boot

Bricked MTCD MX unit after upgrade rom

Hi,
My device,
Mtcd Mx
A-Media
Rk3188
Lollipop 5.1.1
i upgrade my Hu from 1.3 @hal9k to hal9k’s 7.1.2 nougat, everything went fine. Bootup successfuly. While looking settngs page “power off” warning came and after that restart it self, then stuck on nougat logo. Nothings happening just stuck. After i manage a sdcard with sd firmwaretool to downgrade 5.1.1 with stock 5.1.1 dupdate file. Hu stuck on lollipop boot logo no matter what i do.
Things that i tried
With @hal9k 7.1.2 bootable sdcard i can get into Nougat recovery menu, tried clean wipe cash, factory reset options and finally update again, there is no solution still stuck nougat logo.
With stock rom(5.1.1) bootable sdcard i cant get into lollipop recovery menu. Stuck on lollipop boot logo. Tried eject the sdcard as soon as possible when lollipop appears many time, doesnt work.
i never update dmcu, it is same as it was.
İ thing it is bricked, please ineed some advice, i m very sorry for beeing such despered
Edit: i apply this method to flash som with;
1- stock dupdate.img. Flshing succesful but stuck on boot again.
2- flash with sdupdate file of stock dupdate.img. Flashing succesfull but stuck on boot again.
Tried both files doesnt work. İ cant even get in recovery mode.
https://forum.xda-developers.com/and...h-som-t3766892
————
İ thing i need to try flash mcu and will buy a stlink adaptor. Try to flash mcu soon.
Any recommendation?
Edit2; (day2)
i can still get into recovery menu with hal9k 7.1.2 nougat sdcard,
But sdcard with stock rom still doesnt get into recovery mode.
------------------------------
Still there isnt any advice, waiting for your
edit3:
installed ubuntu to laptop
used rkflashkit and upgrade_tool
erase all nand partitions one by one with rkflashkit
lowformat by upgrade_tool
upgrade firmware by upgrade_tool
still no change on condition.
all succeed but on loader i get following error on ubuntu, but on windows didnt give error.
error was
[email protected]:~/utils$ sudo ./upgrade_tool ul loaderr.bin
[sudo] password for erhan:
Loading loader...
Loading loader failed!
Click to expand...
Click to collapse
but as i sad i use windows android tool for flash loader with no error.
is it hard bricked?
——————————————
Edit 4;
i flash the mcu by stlink method,
Success fully flashed mcu chip.
Conclution;
Nothing changed, it doesnt work no matter i do.
This is my last post about unbricking operation.
İ gave it to dealer this morning, they will send it repair. i will write the conclution.
will it live or die? Coming soon!
Many many thanks to everyone who read entire post
Vote your guess down here, will it came back to life or die and rest in peace

Need advice

Sadece_erhan said:
Need advice
Click to expand...
Click to collapse
Would demanding it motivate others to help?
What have you tried and from reading the forums, identified what the options might be?

marchnz said:
Would demanding it motivate others to help?
What have you tried and from reading the forums, identified what the options might be?
Click to expand...
Click to collapse
i dont understand why it always gets in recovery mode with the sdcard which already bricked the unit.
understandings from readings
it doesnt get into recovery mode because it stucks or something went wrong on previous update.
To get in recovery i remove som from board, prepare a cable with 10k and 20k resistors. measure 3.2v from cable. And attach the usb cable pins to som’s related pins. Pc recognise the som, run the rk tool app, load stock 5.1.1 rom. And click restore button, succeed the restore succesfully. Plug the som back to board, push the reset button. it stuck on boot lollipop logo again. İ i tried to restore both dupdate.img and sdupdate.img by one by. Doesnt work.
The only thing that work is the hal9k’s nougat 7.1.2 rom’s sdupdate.img. İt takes recovery menu, i can wipe data, wipe cash , update mcu and update firmware. (Update firmware option only updates nupdate 7.1.2 version which is stuck on boot logo again)
i will flash mcu tomorrow by stlink method. i think mcu is fine. it wont work again.
İ create sdcards with Rockchip Create Upgrade Disk Tool v1.46 (SDBOOT 2.12)

update,
remove som, take it to maskrom mode.
with tool androidtool 2.3
eraseflash
lowerformat
upgrade firmware.
it doesnt work still.
i guess i need fully erase nand partitions and make it as virgin . but how?
installed virtual machine and ubuntu to fix by rkflashkit but, it cant recognise usb