Restoring a tablet - Android Q&A, Help & Troubleshooting

i have an allwinner a20 tablet rooted and i have installed a rom that is not for this tablet...So i want to restore the original rom but the problem is that i cant find an original rom for this tablet...But i have a friend that he has exactly the same tablet...I can copy all the folders from his tablet(i mean i can root it)(system,data...) but how to copy them to my tablet?I have to transfer all the folders from my friend's tablet to my pc and the to my tablet?I dont know which folders should i transfer.Also must i create a flashable cwm ?Thanks for your help.Sorry for my bad english

Anyone?

pavlos77 said:
Anyone?
Click to expand...
Click to collapse
No, copying all the info from one tablet to the next will do nothing. You need to flash the original stock.img and ROM. Try to find through manufacturers website or through Google search to see if someone posted in another site for this tablet.

Can i create a flashable rom from my friend's talbet?

pavlos77 said:
Can i create a flashable rom from my friend's talbet?
Click to expand...
Click to collapse
Dont believe so. The files are put there to run the tablet but the code to tell where things to install, etc are not on the tablet. Google search for anyone how does development or has access to the zip from manufacturer would be your best bet.
---------- Post added at 03:03 PM ---------- Previous post was at 02:59 PM ----------
Try this webiste. Seems to have ROM download for a20.
http://www.slatedroid.com/topic/93145-zenithink-c90a-allwinner-a20-firmware/

i installed this firmware but it shows me a white screen... but the tablet boots normaly...I think that the best solution is my friend's tablet becasue its exactly the same...Can anyone help to create a flashable rom from my friend's tablet?

pavlos77 said:
i installed this firmware but it shows me a white screen... but the tablet boots normaly...I think that the best solution is my friend's tablet becasue its exactly the same...Can anyone help to create a flashable rom from my friend's tablet?
Click to expand...
Click to collapse
Boots to working? Describe "white screen".

I have installed the previous firmware so its "okay"...i saw this http://forum.xda-developers.com/showthread.php?t=1801690 guide to create roms...my only problem is the boot.img file...where can i find it?is there in tablet?or can i use from other tablet?

I tried searching through my file explorer for location of the boot.img file but no luck other than through CWM. What I'd recommend is, if you have custom recovery, "backup current ROM" and then extract the boot.img from a file explorer to add to what you need to reflash the ROM. I believe the boot.img is made via the recovery backup and I wasn't able to find any by Google search.

Related

How to clone ?

Hi All,
Do anyone can help me to find a way to backup and clone the ROM ?
I have 50 Galaxy Tab and need to clone the ROM that I have setted to the other and need the easier way.
Is it possible with Fastboot ?
Thank you in advance.
-JFK- said:
Hi All,
Do anyone can help me to find a way to backup and clone the ROM ?
I have 50 Galaxy Tab and need to clone the ROM that I have setted to the other and need the easier way.
Is it possible with Fastboot ?
Thank you in advance.
Click to expand...
Click to collapse
Hello there,I think u don't need to clone anything just transfer "rom".zip from PC to that divice which u want to have that rom,
Or just download it again on other divice!
Vinchenzo13 said:
Hello there,I think u don't need to clone anything just transfer "rom".zip from PC to that divice which u want to have that rom,
Or just download it again on other divice!
Click to expand...
Click to collapse
Thank you for your reply.
How to made the "rom.zip" ?
-JFK- said:
Thank you for your reply.
How to made the "rom.zip" ?
Click to expand...
Click to collapse
Mostly ppl download rom's,what kind rom u want,I can hook u up with some links
-JFK- said:
Hi All,
Do anyone can help me to find a way to backup and clone the ROM ?
I have 50 Galaxy Tab and need to clone the ROM that I have setted to the other and need the easier way.
Is it possible with Fastboot ?
Thank you in advance.
Click to expand...
Click to collapse
Sort of difficult to understand your question, but I think what you want to do is backup your current ROM and then flash it to 50(!) other galaxy tabs. Use CWM recovery and select "backup." Let it run. When it's finished, the backup file will be in a folder called "clockworkmod" (it's several large files in a folder). Copy this folder to the other tablets (same file structure) and in CWM recovery choose "restore." (it's right next to backup).
BTW- If you don't have root you'll need to do that first; you can then install CWM recovery with the ROM Manager app from the play store. It won't work unless you have root first.
If none of that made sense, you need to read a lot more of this forum before you flash anything on your tablets (since you can damage/brick your tablets if you're not aware of what you're doing).
slack04 said:
Sort of difficult to understand your question, but I think what you want to do is backup your current ROM and then flash it to 50(!) other galaxy tabs. Use CWM recovery and select "backup." Let it run. When it's finished, the backup file will be in a folder called "clockworkmod" (it's several large files in a folder). Copy this folder to the other tablets (same file structure) and in CWM recovery choose "restore." (it's right next to backup).
BTW- If you don't have root you'll need to do that first; you can then install CWM recovery with the ROM Manager app from the play store. It won't work unless you have root first.
If none of that made sense, you need to read a lot more of this forum before you flash anything on your tablets (since you can damage/brick your tablets if you're not aware of what you're doing).
Click to expand...
Click to collapse
The goal is to not have to root, install CWM...
Starting from a brand new Galaxy tab and with a quick action get it cloned.
I spend too much time to root, install CWM and then my backup.
There is another way ?
-JFK- said:
The goal is to not have to root, install CWM...
Starting from a brand new Galaxy tab and with a quick action get it cloned.
I spend too much time to root, install CWM and then my backup.
There is another way ?
Click to expand...
Click to collapse
Sorry, but there's no other way. But it's really not that much time. You just pointed out that it's 3 steps. It will take a day or less.

[Q] Need Help, Newbie just got tab..

Hello to all, i came from Malaysia and i just got my GT-P7500, done fashing to ICS 4.0.4 running XXLQ8 stock ICS with Kernel 3.1.10..
I tried rebooting into stock recovery mode, when i choose to update flash from external storage, the system is telling me that E:/ volume not found,
/sdcard notfound.. Can somebody or anybody explain this and explain to me how to flash update..
Do i need another recovery mod or can i do it with the original stock recovery mod??
how come my post is not replied?
Someone pliss help me..
dauzcroz93 said:
how come my post is not replied?
Someone pliss help me..
Click to expand...
Click to collapse
I think the reason your post has not been answered is because we don't know exactly what you're asking. Also most answers are already posted. You just have to search and read them.
I'm not sure what you're doing myself, but I think you need to use Odin to flash CWM recovery and then use that recovery to flash ROMs, kernels, etc...
Since I really don't know what you're trying to do, you need to make sure what I said is REALLY what you need to do. By searching and reading you will find your answer.
Sent from my GT-P7510 using XDA Premium HD app
Benzoman said:
I think the reason your post has not been answered is because we don't know exactly what you're asking. Also most answers are already posted. You just have to search and read them.
I'm not sure what you're doing myself, but I think you need to use Odin to flash CWM recovery and then use that recovery to flash ROMs, kernels, etc...
Since I really don't know what you're trying to do, you need to make sure what I said is REALLY what you need to do. By searching and reading you will find your answer.
Sent from my GT-P7510 using XDA Premium HD app
Click to expand...
Click to collapse
tq very much.. right now, i'm trying to do just like u say, if it works, i'm in your debt..
what i meant was, that my android recovery system cannot detect the path to SD card, since the gt-p7500 did not have any SD Card slots, so i can't flash any .zip files from my tab.. Thanks so much..
dauzcroz93 said:
tq very much.. right now, i'm trying to do just like u say, if it works, i'm in your debt..
what i meant was, that my android recovery system cannot detect the path to SD card, since the gt-p7500 did not have any SD Card slots, so i can't flash any .zip files from my tab.. Thanks so much..
Click to expand...
Click to collapse
One of the partitions on your tablet is mounted as /mnt/sdcard (or /sdcard). You normally push files there using USB from your computer, either using "adb push" or mounting the sdcard as a media device on the computer.
Stock recovery does not let you choose a file from the /sdcard directory. I think the errors you're seeing is that the stock recovery isn't finding the files it's looking for.
You'll need to install Clockwork Mod recovery if you want to flash custom ROMs.
Galaxy Tab doesn't have an SD Card slot, so anything with external storage/mounting USB/ etc won't work in recovery. Flashing a ROM is possible because the data partition is read and treated as SD Card. If you need to add something to your tab via USB while it's in recovery, you'll need to use the Android Debug Bridge and type adb push, then the file, then the destination.
Example:
Code:
adb push rom.zip /sdcard/

[Q] MTK6573 custom recovery and backups / Stock Boot, Recovery + Scatter included

Phone is a Star X19i
Now I'm looking at getting a system to allow me to back up the rom and re-flash if needed.
Post 4 has attachments of my boot, recovery and scatter files.
Old issue: (Solved)
Stupid thing I did I renamed the mtklockscreen.odex to mtklockscreen.odex1 just as a test in a half asleep phase to see if I would get the stock lockscreen loading.
Suffice to say the phone no longer boots.
Really don't think I can get into ADB and rename the file to get the phone booting again unless anyone knows a way.
Android was 2.3.6 and I asked the seller if it was possible to get the rom incase anything like happened which they didn't.
So anyone have any ideas?
I have attached the stock recovery and boot images made with cat and a scatter file I made to post 4.
As I have no idea about modifying these for hard root can anyone take a look?
I don't know the specifics of the phone, but if you can go into recovery mode maybe you can get adb working, or use a flashable zip to rename the file by installing it from recovery (just need to edit the zips' updater script)
dxppxd said:
I don't know the specifics of the phone, but if you can go into recovery mode maybe you can get adb working, or use a flashable zip to rename the file by installing it from recovery (just need to edit the zips' updater script)
Click to expand...
Click to collapse
I got into built in Factory mode and can see the file I renamed through ADB and android commander but cannot rename it back due to not having hard root access.
I also have a copy of the boot and recovery partitions 5 and 6 respectively I made in the adb shell yesterday as I was half looking at getting hard root access.
ren mtklockscreen.odex1 mtklockscreen.odex
ren: permission denied
I read you can do a custom recovery with root using SP Tools still so can anyone help me do this?
I know about system root etc and stuff and have flashed roms before on other tablets and have been a PC I.T tech (wouldn't think it due to the stupid mistake) but this recovery and scatter files etc is kinda new to me.
I have a scatter file now I just made if anyone is interested in helping me.
Yes I have a MTK6573 but the scatter file came from the MT6516 Rom Studio which I read works the same for the 6573.
Attached is also my stock boot and recovery partitions I made with cat yesterday if there usable to anyone to help.
Well I got it working and fixed.
I had to go into adb shell and su and mount the file system as writable, as I have used linux before I didn't know about android and what needed to be done and permission locks etc.
The stock boot, recovery and scatter files will remain on this thread if anyone wants to help create or find a recovery which can allow me to create backups and flash custom roms.
I may be able to provide a dump of android 2.3.6 for those that want it once I'm provided with a backup solution as I have read a few people wanting this updated android rom.
This got too close to what I would like liked with bricking this phone.
And I'm not comfortable unless I have a rom backup of this.
Rooting Advice: For anyone with a MTK6573 on Android 2.3.6 trying to root but having issues with super one click make sure you only turn on USB debugging after Android has loaded and just before you plug the usb cable in to run super one click.
I have seen a few thread and posters here about not being able to root the phone and this is the cause that debug needs to be switched on right before you connect and try to root.
Original seller has agreed to send the firmware and flashing stuff on cd for me so I can upload it for you all.
This is a win for MTK6573 Star X19i owners as I'll have the updated 2.3.6 Gingerbread firmware to release for you all root modify etc in a week or so.
Be careful with ROM studio. I believe it is not compatible with MT6573.
You want to read this: http://bm-smartphone-reviews.blogspot.com/2012_04_01_archive.html
cybermaus said:
Be careful with ROM studio. I believe it is not compatible with MT6573.
You want to read this: http://bm-smartphone-reviews.blogspot.com/2012_04_01_archive.html
Click to expand...
Click to collapse
That's what I read and did to get my scatter as I used cat then used the program linked in that thread to generate the scatter.

Disabling secure boot

firstly i request all moderators of xda in grand 2 forum,
as i am unable to post on developement section,
i am posting the thread here..
plz move it to developement section.
ok now back to topic,
try at your own risk!
i will not be responsible if anything happens to your phone
To all the users who have succesfully rooted grand 2,
there can be a way to install (flash) recovery on your phone!
i was exploring the system and i found a file in "/system" folder
called "recovery-from-boot.p"
i THINK this is the file that causes problem!
you may delete it or rename it...(renaming is safer)
once you delete it, you may flash custom recovery via ODIN
and even if the recovery gets currupted or if you cant boot into recovery, you can simply boot normally and restore the renamed or deleted file!!!
and then once again you may try to flash custom recovery from ODIN (as stock gets deleted as soon as you modify recovery-from-boot.p file)
press thanks if this post helped!
dindt find any file like u wrote.... plss provide specific path.. so we can try
Rakesh251 said:
dindt find any file like u wrote.... plss provide specific path.. so we can try
Click to expand...
Click to collapse
Its located here:
bro no such file is available.. this wont help to solve .and still custom recovery not available for grand2
how would u know that it won't help..
i only post threads as i know what i am doing.
the file which i uploaded up there is taken from MY PHONE ITSELF i.e galaxy GRAND 2..
and That FILE (recovery-from-boot.p) IS present on my phone and i m using Stock rom and not any other rom..
Same with me... none of them named exactly like you mention above.
Sent from my SM-G7102 using XDA Premium 4 mobile app
it only appears on a Stock UN-ROOTED firmware..
In order to inject custom CWM there isnt a necessity to root device.
so firstly we need to remove file that I mentioned in my previous post and inject recovery.
and via that recovery,
we can flash a custom kernel that automatically roots device!
vrushabh sutar said:
it only appears on a Stock UN-ROOTED firmware..
In order to inject custom CWM there isnt a necessity to root device.
so firstly we need to remove file that I mentioned in my previous post and inject recovery.
and via that recovery,
we can flash a custom kernel that automatically roots device!
Click to expand...
Click to collapse
Dude, if the FILE just appears in STOCK UNROOTED FIRMWARE , so how can we delete that.
Coz, to delete a /system file, we need ROOT access.
NOT POSSIBLE.
And in rooted version, the FILE is not available :victory:
00hacktheworld00 said:
Dude, if the FILE just appears in STOCK UNROOTED FIRMWARE , so how can we delete that.
Coz, to delete a /system file, we need ROOT access.
NOT POSSIBLE.
And in rooted version, the FILE is not available :victory:
Click to expand...
Click to collapse
Thank you for replying.
I know that it can't be deleted,
but one may understand the importance of that ".p" file and understand its working, as it plays a vital role in booting up recovery...
the only thing I wanna let users understand is that,
stock recovery includes that file and
it got deleted when rooted because the rooting package (eg. CF root) didnt contain the .p file
when I studied that strange file,
it consisted of mapping and accurate memory address as well as accurate size of stock recovery image in bytes,
so that whn new recovery gets flashed, it verifies with the .p file!
and talking abt modifying the .p file,
we must create a custom linux binary with zerglings and packed into .tar file which gets flashed to phone via Odin!
for build creation you can use this tool..
http://www.xda-developers.com/android/comprehensive-guide-to-the-android-build-process/?__utma=60652090.747738090.1398670920.1400078979.1400132113.21&__utmb=60652090.0.10.1400132113&__utmc=60652090&__utmx=-&__utmz=60652090.1400132113.21.12.utmcsr=google|utmccn=%28organic%29|utmcmd=organic|utmctr=%28not%20provided%29&__utmv=-&__utmk=163283131
So I found the reason behind this
It is a file used by Software Update Application to flash updates.
If you want proof go-to the data folder of the SOFTWARE UPDATER and there will be a 3mb file. Copy it to pc and open using winrar. You can see many files including boot.img.
So the author of this thread was about to update his/her phone when he found the file :thumbdown:
SO MYSTERY SOLVED
SCOOBY DOOBY DOOO
Sent from my SM-G7102
i didnt't get what you are on to...
i noticed that the Update Package (i.e the OTA) easily jumps over all the restrictions imposed by Bootloader(locked one) and gets easily flashed to the phone...
therefore the whole matter is now pointing out to the 'ro.build.fingerprint' as well as Verification of MD5 hashes linked directly to Flashing InstructionSet

Allcall Rio , need help

I recently bought this new chinese phone ( out from 3 months, android 7.0 ) but after many hours i still was not able to root this, tried all 1click junk and nothing worked, tried PC apps.. followed many guides, nothing worked.
I would like at least to install TWRP, but of course, device is not supported, and i dont know where to get proper IMG file for my phone.
any help would be appreciated.. thanks
Edit: Tried Mtk tools, since its a mt6580, it does detect phone but there are errors,
TotalBytesPerChunk Not Found. Set default Page/Spare=2048/64
Uknown rom structure, backup not possible
innersphere1 said:
I recently bought this new chinese phone ( out from 3 months, android 7.0 ) but after many hours i still was not able to root this, tried all 1click junk and nothing worked, tried PC apps.. followed many guides, nothing worked.
I would like at least to install TWRP, but of course, device is not supported, and i dont know where to get proper IMG file for my phone.
any help would be appreciated.. thanks
Edit: Tried Mtk tools, since its a mt6580, it does detect phone but there are errors,
TotalBytesPerChunk Not Found. Set default Page/Spare=2048/64
Uknown rom structure, backup not possible
Click to expand...
Click to collapse
no way to root this??
Hi, I also just aquired the allcall rio.
Can you help me out with a few things,
1. does the back come off in order to reach the battery?
2. on a normal phone pressing the middle button normally gains you access into the app menu, for some reason i can only access the home screen with the apps being accessed by sliding the home screen to multi home screens, is this normal?
3. have you rooted your phone and if so can you leadme to where you done this?
I like the phone, just wondering whether what iv stated are normal features or a fault with mine
Thanks in advance for any help / info
Cheers
Rooted / ish
innersphere1 said:
no way to root this??
Click to expand...
Click to collapse
Hey,
I have not found a root method but iv found a way to access all sysytem files and folders.
Go to app store and download ROOT BROWSER by JRummy Apps.
Open the app once installed and it will ask you to download files to make it work, it downloads quickly from inside the app.
When its finished you can then access the phones root files as tho your phone was rooted.
Its better than nothing for now and im sure there would be a way to insert the nesscerry files for rooting into the correct folders.
Hope it works for you
ronyon78 said:
Hey,
I have not found a root method but iv found a way to access all sysytem files and folders.
Go to app store and download ROOT BROWSER by JRummy Apps.
Open the app once installed and it will ask you to download files to make it work, it downloads quickly from inside the app.
When its finished you can then access the phones root files as tho your phone was rooted.
Its better than nothing for now and im sure there would be a way to insert the nesscerry files for rooting into the correct folders.
Hope it works for you
Click to expand...
Click to collapse
So can you modify files in /system with ROOT BROWSER?
---------- Post added at 07:51 AM ---------- Previous post was at 07:26 AM ----------
innersphere1 said:
no way to root this??
Click to expand...
Click to collapse
SP flash to flash a custom TWRP recovery .
I have ported one recovery image from TWRP 3.0.0-0 for Tecno W4 using carliv image kitchen. And it works like charm.
I would put the link up If I could, but right now I still need to make a few more posts to gain the privilege .
innersphere1 said:
no way to root this??
Click to expand...
Click to collapse
Hi again, I've found the better way to get root using Magisk, available here in XDA.
first download the 0808 firmware from allcall's official website and flash it with SP flash.
wireless upgrade to 20170819, unlike 0728 and 0808, this version has remove all bloatware and malware
take boot.img from the firmware folder and put it to phone storage
install Magisk Manager v5.3, hit install, patch the boot image.
copy the patched boot.img to PC and SP flash it. (no need to unlock bootloader)
done!
everything for allcall rio
ALLCALL RIO- SOFTWARE+TWRP+PHILZ+SUPER SU+FLASH TOOL+SN WRITE TOOL needrom download success:good:
---------- Post added at 04:42 PM ---------- Previous post was at 04:39 PM ----------
AllCall-RIOWCDMA-1GB+16GB-7.0-20171207 by radu13
ciroradu said:
ALLCALL RIO- SOFTWARE+TWRP+PHILZ+SUPER SU+FLASH TOOL+SN WRITE TOOL needrom download success:good:
---------- Post added at 04:42 PM ---------- Previous post was at 04:39 PM ----------
AllCall-RIOWCDMA-1GB+16GB-7.0-20171207 by radu13
Click to expand...
Click to collapse
Can you help me rooting my allcall rio I just can't tryied every root apk and pc softwares

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