insufficient memory error Nvidia Shield Tablet LTE - Shield Tablet Q&A, Help & Troubleshooting

hello... i tried to flash my LTE US model to update 1.2.1 due to problem with cellular on lolipop..
the process have been gone smooth until fastboot flash system system.img
it says there failed.
and i cant boot my tablet, nor i could proceed with flashing update 1.2.1
could anybody help?
Credits to BlackDave from the thread http://forum.xda-developers.com/shield-tablet/help/problems-downgrading-to-kitkat-t2995892#
Fix:
1. download the full OTA from this thread
http://forum.xda-developers.com/shi...k-recovery-images-ota-library-guides-t2988881
2. also download CWM recovery.
3. after thats done, copy files from step 1 into external SD card( considering u can't get into the devices internal memory). DO NOT EXTRACT
4.boot the device into fastboot mode.
5. install CWM recovery from Step 2.
6. use CWM recovery to install files from step 1.
7. disable stock recovery IF U want(optional)
8. Restart and pray that your device WORKS.

Related

[HOWTO] INSTALL STOCK FIRMWARE USING CWM/TWRP even w/a DEAD USB Port

GUIDE TO FLASHING STOCK FIRMWARE FOR ATT AND ROGERS I727 SKYROCKET PHONES WITHOUT USING ODIN OR KIES ​
THIS METHOD APPLYS TO:
ONLY FOR PHONES THAT CAN BOOT INTO A CUSTOM RECOVERY CWM/TWRP
USERS WHO CANT USE ODIN AND/OR KIES FOR WHATEVER REASON
PHONES WITH A BAD USB PORT
HAVE USB CONNECTIVITY ISSUES
MAC USERS WITH A CUSTOM RECOVERY ALREADY INSTALLED.
YOU ARE ON A CUSTOM ROM WITH USB PROBLEMS AND NEED TO RETURN TO STOCK FOR WARRANTY REPAIRS
NOTE: USING THIS GUIDE TO RETURN TO STOCK WILL PERMANENTLY UNROOT THE PHONE, BUT CAN BE REROOTED AFTER IF NEEDED.
Disclaimer: I am not responsible for your devices, follow guide at your own risk!
READ THE WHOLE POST
HOW TO ENTER INTO RECOVERY MODE, INSTRUCTIONS HERE STEP #4
GUIDE PRESUMES YOU ALREADY KNOW HOW TO INSTALL/FLASH FILES FROM RECOVERY
YOU NEED TO HAVE ONE OF THE RECOMMENDED CUSTOM RECOVERIES ALREADY INSTALLED ON THE PHONE SUCH AS CWM OR TWRP, LINKS IN THE DOWNLOAD SECTION BELOW
IN THIS GUIDE YOU WILL BE INSTALLING THE STOCK FIRMWARE ZIP FILE
OPTIONAL: INSTALLING THE STOCK RECOVERY ZIP FILE ONLY IF YOU NEED TO RETURN FOR WARRANTY, OTHERWISE NOT RECOMMENDED TO INSTALL
GETTING THE STOCK FIRMWARE TO YOUR PHONE
OPTION 1: IF YOUR ABLE TO BOOT INTO ANY ROM:
YOU HAVE A WORKING USB CONNECTION:
Download the files and transfer the files from your computer to your internal or external sdcard
YOU DONT HAVE A WORKING USB CONNECTION: USE EITHER METHOD "A" OR "B" OR "C":
METHOD A: From the phone use xda app or browser and navigate to this page and download the files directly to your device from the links provided below, then move them to the root of your internal or external sdcard, it will make it easier to find.
METHOD B: Use airdroid wirelwss appor kies air to transfer your files from your computer to your phone through your wifi connection and place them in the root of your internal or external sdcard
METHOD C: use an external sdcard reader/writer or another phone that has a micro sdcard slot and transfer files from your computer to the root of the external sdcard, then insert the sdcard back into the phone.
OPTION 2: YOUR NOT ABLE TO BOOT BUT CAN GET INTO A CUSTOM RECOVERY: USE EITHER METHOD "A" OR "B":
METHOD A: If usb port works: enable usb mount in custom recovery and transfer files to the root of your sdcard
METHOD B: If usb port doesnt work: use an external sdcard reader/writer or another phone that has a micro sdcard slot and transfer files from your computer to the root of the external sdcard, then insert the sdcard back into the phone.
FLASHING THE FILES
FIRMWARE
ENTER INTO RECOVERY MODE
PERFORM A RESET AND WIPE BOTH CACHES
INSTALL THE STOCK FIRMWARE ZIP FILE
ONLY INSTALL THE STOCK FIRMWARE(NOT THE STOCK RECOVERY ZIP FILE) THEN REBOOT THE PHONE INTO ANDROID TO CHECK IF IT BOOTS PROPERLY
YOUR GOOD LIKE THIS IF YOU JUST WANTED STOCK BACK ON YOUR PHONE
STOCK RECOVERY: ONLY RECOMMENDED IF RETURNING FOR WARRANTY REPAIR AND NEED TO SHOW FULL STOCK
TO GET THE STOCK RECOVERY ZIP FILE ONTO THE SDCARD FOLLOW THE INSTRUCTIONS FOR THE FIRMWARE GUIDE ABOVE
ENTER INTO RECOVERY MODE
INSTALL THE STOCK RECOVERY ZIP FILE, ONCE YOU DO THIS YOU WILL LOSE THE CUSTOM RECOVERY
IF YOU CANT USE ODIN THERE IS NO WAY TO REINSTALL A CUSTOM RECOVERY ON THE SKYROCKET ONCE THE STOCK RECOVERY HAS BEEN INSTALLED.
REBOOT PHONE INTO RECOVERY TO SEE IF THE STOCK RECOVERY FLASHED PROPERLY.
DOWNLOADS
MOVED TO THE 1STOP STICKY
USE CWM/TWRP FLASHABLE FIRMWARES
This really work. Can you write one for unlocking also?
Sent from my SAMSUNG-SGH-I727 using xda app-developers app
chasama said:
This really work. Can you write one for unlocking also?
Sent from my SAMSUNG-SGH-I727 using xda app-developers app
Click to expand...
Click to collapse
you have to buy unlock code, and you have to be on stock when entering code, read this http://forum.xda-developers.com/showpost.php?p=28439204&postcount=10
Samsugn galaxy s2 GT-I9100 help!!
vincom said:
you have to buy unlock code, and you have to be on stock when entering code, read this http://forum.xda-developers.com/showpost.php?p=28439204&postcount=10
Click to expand...
Click to collapse
i am running on RR Jelly bean rom 3.0.6, suddenly my comp stopped detecting my phone nd now its not detected by any comp!!
wen i connect it only charges but the phone is not recognised!! i want to install stock ics firmware plz help me!
Hey thanks for the comprehensive list. One question. I can't boot, but I can access recovery. I can access USB, however, I don't have an external sd card. What are my options, besides buying one.
zgibbyson said:
Hey thanks for the comprehensive list. One question. I can't boot, but I can access recovery. I can access USB, however, I don't have an external sd card. What are my options, besides buying one.
Click to expand...
Click to collapse
use internal if you have usb access to it
thanks
the SD card from my other phone has some folders:.android secure, data; LOST.DIR; DCIM; LGsys.....which folder should I put TWRP2.2.0 & stock firmware in ? which folder is considered A ROOT of the external SD card ? so I can boot the device.I couldn't boot it. I am newbi. please help. Thankss.
Re: [HOWTO] INSTALL STOCK ICS USING CWM/TWRP even w/a DEAD USB Port
PhoneTay11 said:
the SD card from my other phone has some folders:.android secure, data; LOST.DIR; DCIM; LGsys.....which folder should I put TWRP2.2.0 & stock firmware in ? which folder is considered A ROOT of the external SD card ? so I can boot the device.I couldn't boot it. I am newbi. please help. Thankss.
Click to expand...
Click to collapse
Don't put it in any folder, just copy to the SD card.
Sent from my SAMSUNG-SGH-I957 using xda app-developers app
I did copy TWRP2.2.0 and stock firmware zip in SD card and hold volume up+down + power button to get recovery mode but I only see pictures of phone & monitor with yellow
triangle at center.( including : Firmware upgrade encountered an issue . please select recovery mode in Kies & try again.)
---------- Post added at 06:31 AM ---------- Previous post was at 06:23 AM ----------
I upgraded my samsung s2 version 2.3.6 to 4.0.4 through the Kies. Then I tried to install TWRP 2.2.0 and Odin 1.85. I saw COM 14 ; COM 17 when I hit start button .It said
FAILED. Now it showed a yellow triangle in the middle of phone & monitor pictures. ( including : Firmware upgrade encountered an issue . please select recovery mode in Kies & try again). Please help . Thank you very much.
I just tried other laptop . I saw COM 3 but it said it couldn't open the serial (COM )port . All thread completed (success 0/ failed 1)
PhoneTay11 said:
I did copy TWRP2.2.0 and stock firmware zip in SD card and hold volume up+down + power button to get recovery mode but I only see pictures of phone & monitor with yellow
triangle at center.( including : Firmware upgrade encountered an issue . please select recovery mode in Kies & try again.)
---------- Post added at 06:31 AM ---------- Previous post was at 06:23 AM ----------
I upgraded my samsung s2 version 2.3.6 to 4.0.4 through the Kies. Then I tried to install TWRP 2.2.0 and Odin 1.85. I saw COM 14 ; COM 17 when I hit start button .It said
FAILED. Now it showed a yellow triangle in the middle of phone & monitor pictures. ( including : Firmware upgrade encountered an issue . please select recovery mode in Kies & try again). Please help . Thank you very much.
I just tried other laptop . I saw COM 3 but it said it couldn't open the serial (COM )port . All thread completed (success 0/ failed 1)
Click to expand...
Click to collapse
that screen is also odin/download mode
try flashing again
check odin troubleshooting section in the "install cwm/twrp" link in my sig
vincom said:
GUIDE TO FLASHING STOCK FIRMWARE FOR ATT AND ROGERS I727 SKYROCKET PHONES WITHOUT USING ODIN OR KIES ​
THIS METHOD APPLYS TO:
PHONES THAT CAN BOOT INTO A CUSTOM RECOVERY CWM/TWRP
USERS WHO CANT USE ODIN AND/OR KIES FOR WHATEVER REASON
PHONES WITH A BAD USB PORT
HAVE USB CONNECTIVITY ISSUES
MAC USERS WITH A CUSTOM RECOVERY ALREADY INSTALLED.
YOU ARE ON A CUSTOM ROM WITH USB PROBLEMS AND NEED TO RETURN TO STOCK FOR WARRANTY REPAIRS
NOTE: USING THIS GUIDE TO RETURN TO STOCK WILL PERMANENTLY UNROOT THE PHONE, BUT CAN BE REROOTED AFTER IF NEEDED.
Disclaimer: I am not responsible for your devices, follow guide at your own risk!
READ THE WHOLE POST
HOW TO ENTER INTO RECOVERY MODE, INSTRUCTIONS HERE STEP #4
GUIDE PRESUMES YOU ALREADY KNOW HOW TO INSTALL/FLASH FILES FROM RECOVERY
YOU NEED TO HAVE ONE OF THE RECOMMENDED CUSTOM RECOVERIES ALREADY INSTALLED ON THE PHONE SUCH AS CWM OR TWRP, LINKS IN THE DOWNLOAD SECTION BELOW
IN THIS GUIDE YOU WILL BE INSTALLING THE STOCK FIRMWARE ZIP FILE
OPTIONAL: INSTALLING THE STOCK RECOVERY ZIP FILE ONLY IF YOU NEED TO RETURN FOR WARRANTY, OTHERWISE NOT RECOMMENDED TO INSTALL
GETTING THE STOCK FIRMWARE TO YOUR PHONE
OPTION 1: IF YOUR ABLE TO BOOT INTO ANY ROM:
YOU HAVE A WORKING USB CONNECTION:
Download the files and transfer the files from your computer to your internal or external sdcard
YOU DONT HAVE A WORKING USB CONNECTION: USE EITHER METHOD "A" OR "B" OR "C":
METHOD A: From the phone use xda app or browser and navigate to this page and download the files directly to your device from the links provided below, then move them to the root of your internal or external sdcard, it will make it easier to find.
METHOD B: Use airdroid wirelwss appor kies air to transfer your files from your computer to your phone through your wifi connection and place them in the root of your internal or external sdcard
METHOD C: use an external sdcard reader/writer or another phone that has a micro sdcard slot and transfer files from your computer to the root of the external sdcard, then insert the sdcard back into the phone.
OPTION 2: YOUR NOT ABLE TO BOOT BUT CAN GET INTO A CUSTOM RECOVERY: USE EITHER METHOD "A" OR "B":
METHOD A: If usb port works: enable usb mount in custom recovery and transfer files to the root of your sdcard
METHOD B: If usb port doesnt work: use an external sdcard reader/writer or another phone that has a micro sdcard slot and transfer files from your computer to the root of the external sdcard, then insert the sdcard back into the phone.
FLASHING THE FILES
FIRMWARE
ENTER INTO RECOVERY MODE
PERFORM A RESET AND WIPE BOTH CACHES
INSTALL THE STOCK FIRMWARE ZIP FILE
ONLY INSTALL THE STOCK FIRMWARE(NOT THE STOCK RECOVERY ZIP FILE) THEN REBOOT THE PHONE INTO ANDROID TO CHECK IF IT BOOTS PROPERLY
YOUR GOOD LIKE THIS IF YOU JUST WANTED STOCK BACK ON YOUR PHONE
STOCK RECOVERY: ONLY RECOMMENDED IF RETURNING FOR WARRANTY REPAIR AND NEED TO SHOW FULL STOCK
TO GET THE STOCK RECOVERY ZIP FILE ONTO THE SDCARD FOLLOW THE INSTRUCTIONS FOR THE FIRMWARE GUIDE ABOVE
ENTER INTO RECOVERY MODE
INSTALL THE STOCK RECOVERY ZIP FILE, ONCE YOU DO THIS YOU WILL LOSE THE CUSTOM RECOVERY
IF YOU CANT USE ODIN THERE IS NO WAY TO REINSTALL A CUSTOM RECOVERY ON THE SKYROCKET ONCE THE STOCK RECOVERY HAS BEEN INSTALLED.
REBOOT PHONE INTO RECOVERY TO SEE IF THE STOCK RECOVERY FLASHED PROPERLY.
DOWNLOADS
MOVED TO THE 1STOP STICKY
USE CWM/TWRP FLASHABLE FIRMWARES
Click to expand...
Click to collapse
Do you have the Stock ROM for GB 2.3.6 (SkyRocket) which i can flash using TWRP? My PC doesn't recognize my Skyrocket. The only way for me is to flash using TWRP but I can't find the GB ROM for it. There's a lot of ROM of GB but it is for ODIN (with extension .tar.md5) instead.
ntd0626 said:
Do you have the Stock ROM for GB 2.3.6 (SkyRocket) which i can flash using TWRP? My PC doesn't recognize my Skyrocket. The only way for me is to flash using TWRP but I can't find the GB ROM for it. There's a lot of ROM of GB but it is for ODIN (with extension .tar.md5) instead.
Click to expand...
Click to collapse
no, why do u need gb, just flash the ics or jb roms, or if your usb is not dead go through the odin trouble shooting section in the restore to stock sticky to try to solve the connection issue, link to restore to stock is in my sig
Stock Rom Android M.
Hi, could you help me i have TWRP Custom recovery and cm12.1 android lollipop, i want to
Flash Stock Rom Android Marshmallow using TWRP is it possible using this method ,
my Device is Galaxy Tab S 8.4 wi-fi.
invalid zip
I am a mac user without access to a PC (no odin). I have TWRP recovery installed. I used android file transfer to move the stock firmware zip in the download section to the internal SD (root folder). I wiped the system and cache, then install zip - but it fails every time with "invalid zip file format". I have tried a half dozen other versions of the stock ROM from various sources and they all fail with the same error. ZIP signature verification is disabled. Just when I thought that i was doing something completely dumb and not flashing correctly at all - I tried re-flashing the lineageOS ROM i have and that worked fine. I've read a bit about unpacking and re-zipping these zips to get them to work, but that requires 7zip (which I don't have on mac). Help! am I doing something dumb or do I not have the correct zip files? I really need to get back to stock so I can activate my cellular service.
champagne_problems said:
I am a mac user without access to a PC (no odin). I have TWRP recovery installed. I used android file transfer to move the stock firmware zip in the download section to the internal SD (root folder). I wiped the system and cache, then install zip - but it fails every time with "invalid zip file format". I have tried a half dozen other versions of the stock ROM from various sources and they all fail with the same error. ZIP signature verification is disabled. Just when I thought that i was doing something completely dumb and not flashing correctly at all - I tried re-flashing the lineageOS ROM i have and that worked fine. I've read a bit about unpacking and re-zipping these zips to get them to work, but that requires 7zip (which I don't have on mac). Help! am I doing something dumb or do I not have the correct zip files? I really need to get back to stock so I can activate my cellular service.
Click to expand...
Click to collapse
AFAIK all devhosts files are bad/fake, i cant even dl my own files.
if i find them all reup to androidfilehost
Stock Rom
champagne_problems said:
I am a mac user without access to a PC (no odin). I have TWRP recovery installed. I used android file transfer to move the stock firmware zip in the download section to the internal SD (root folder). I wiped the system and cache, then install zip - but it fails every time with "invalid zip file format". I have tried a half dozen other versions of the stock ROM from various sources and they all fail with the same error. ZIP signature verification is disabled. Just when I thought that i was doing something completely dumb and not flashing correctly at all - I tried re-flashing the lineageOS ROM i have and that worked fine. I've read a bit about unpacking and re-zipping these zips to get them to work, but that requires 7zip (which I don't have on mac). Help! am I doing something dumb or do I not have the correct zip files? I really need to get back to stock so I can activate my cellular service.
Click to expand...
Click to collapse
Just use "Flashfire" and do everything from your phone no need for a computer.
Using this to flash 1.7 gb file
I have a moto g5s plus (sanders) and have installed unofficial lineage 15.0 build. before installation , I didn't took backup in TWRP. Now i am downloading stock firmware zip file. can that be installed using TWRP?
ParaSpl01t said:
I have a moto g5s plus (sanders) and have installed unofficial lineage 15.0 build. before installation , I didn't took backup in TWRP. Now i am downloading stock firmware zip file. can that be installed using TWRP?
Click to expand...
Click to collapse
you mean this zip file when you unzip it show you 5 files that you can use with Odin?
I tried and says fail , why would tarp fail to flash a stock firm ?

[How -TO](Status 7 Error Fix) Install Update.zip in CWM (With Help of Mobile Odin)

Hi Everyone,
I now Introduce a (Status 7 FIX) and HOW-TO FLash update.zip in Clockworkmod Recovery with the help of Mobile Odin
I am Not Responsible If your Device Bricks... (But It is 80% safe if you Follow Steps Carefully)
It is for All Device Having Root and Clockworkmod Recovery installed on there Devices
Instructions :-
Step 1 - Get Your Update.zip (If Your Device Has Autommatticaly Download the update.zip in it's CACHE)( it will be Found in (/Cache/fota/update.zip))(Place it in (Root of) SdCard.
Step 2 - Open Mobile Odin 3.57 and tap on OTA/Update.zip and select Update.zip ,it is verify the files of zip and if you get an Error about signature check Disable
Step 3 - It Will Now make A New Update.Zip Named as :- [MobileOdin_Update.zip](If you use Mobile Odin to flash this zip it will give you a installer ERROR)
Step 4 - Now Time OF Clockworkmod Recovery to come Into use..... Reboot Into Clockworkmod Recovery and Select Choose ZIP From SDCard
Step 5 - Choose Zip From Internel SDCard and Select MobileOdin_Update.zip
Further, it will now be installed......
IF You Find This Post is Helpful, Then PLz HIT THANKS
thanks my bro
You 'r' welcome....
Sorry,
where can i find Mobile Odin 3.57 version ?
Will this fix work for Htc Explorer???
Im having the worst trouble downloading cm10 through recovery on my tab 2. I come up with this status 7 as well.. i have confirmed root, supersu working, and cwm recovery 6 works.
when i downloaded the mobile odin PRO and open it it says my device is not compatible and asks if i want it to dump some sort of file to possibly make it work? i let that do its thing and after finished it still doesnt open.. What should my next step be?
Where can I get the update zip??

Increase storage 2.49Gb for Qmobile A700, Gionee Gpad G2, Walton Primo N1

Getting short of memory with 1Gb internal Memory only? even tried 2.73Gb mod available but then you still run out of space as you can not move apps to the SD card?
Every time you need to flash a new ROM you need to revert back to the original storage by flashing and restoring... lengthy process.. here i put up a solution for all of you guys using the device or any of its clone. i have Qmobile A700 and tested this on Walton Primo N1 as well...:angel:
Do it ONCE and keeps same storage FOREVER. no matter how many ROM's you change or Flash via custom recovery.
Point to Note here is if you flash this method your current ROM will remain installed, only changes that will incur are Logo shall be replaced, partitions shall be modified and recovery will b replaced with twrp. If you need to keep current logo and recovery then replace the logo.bin and recovery.img with the ones you need to keep in the folder files_to_flashtool you can go to any ROM you want after this. Even when you are flashing a new ROM you don't need any zip to change storage, like it used to be with 2.73Gb Mod. just flash the ROM and you will have 2.49Gb Internal Storage in any rom. But Please take Backup of your Phone just in case anything goes wrong. i shall not be responsible for anything bad happening to your phone if you don't follow the method PROPERLY.
Method and Instructions.
1. Download the files from the Link given at the end.
2. Unzip the folder Tools.zip.
3. Unzip the Drivers Folder.
4. Install Drivers on your PC install ADB and fastboot drivers and device drivers as well.
5. Now Unzip SP Flash Tool 3.1352.01 (5.1352.01).rar and Files_to_FlashTool.zip
6. Turn off phone.
7. Pull out the battery
8. Run sp flash tool.
9. Load scatter file(MT6589_Android_scatter_emmc_PMT.txt) in the files_to_flastool folder. All items will b auto selected.
10. Click download
11. Put battery in the phone and connect cable.
12. The progress bar in sp flash tool will start and a green circle will pop up when done.:highfive:
After process is complete, disconnect the phone from the PC and reboot. Enjoy you have 2.49Gb internal Storage now.
and you will have twrp recovery installed as well after flashing just putting here so that if u want to take backup of current recovery or not.
Downloads
Tools.zip
Files To FlashTool
Credits
Mohammad Ali, Rasel Shiplu for helping and testing this out with me. and Piyush Tilva for Porting Android L Rom for our Devices. Salutes to you all
video tutorial how to flash and the Work Around for if you get stuck on boot logo
Here is the video tutorial how to do it
http://nibs.tinytake.com/sf/OTcwMDFfNjUxODgy
Please note you may require a work around to get it working if you are on stock ROM. so please please keep backup of your ROM before following this method. i shall not be responsible for any loss of Data or damage to your device. …
After the process was finished i rebooted my phone on the stock ROM, it did not boot. so i figured out a workaround for stock ROM users, after the flash is complete when you are on stock ROM (or even any other custom ROM) and phone does not go beyond boot logo, reboot to recovery and restore your TWRP backup.... after the process is complete reboot and enjoy 2.49Gb internal storage or you can also flash this and then install any custom ROM over it. and still you will have 2.49 mod. and it will remain the same untill you restore stock ROM using SP Flash Tools.
Thanks and Enjoy :good::laugh:
Dont forget to hit thanks if i helped you.

Installing 3.1 OTA update with custom recovery

Ran into this issue as I'm running a custom recovery and couldn't flash the update. Took the time to figure out how to do this properly as I couldn't find any existing set of instructions and I'm sure some people will want them.
WARNING: Flashing this update WILL reset root and the recovery partition. These steps restore both. Restoring custom recovery will require a PC with ADB installed as I was only able to find the raw .img file and not a flashable .zip.
1). Download full update zip by navigating to Settings > About tablet > System updates > Check full update (http://i.imgur.com/ozGBzKZ.png)
2). After update is finished downloading, navigate to /data/data/com.nvidia.ota/files/ROM (I used Root Explorer) and move the downloaded update to either your internal or external storage card. DO NOT TAP THE NOTIFICATION THAT SAYS TAP HERE TO INSTALL UPDATE!
3). Download flashable SuperSU.zip from http://download.chainfire.eu/supersu
4). Download CWM recovery.img from http://forum.xda-developers.com/shi.../recovery-cwm-recovery-nvidia-shield-t2848064
5). Reboot recovery
6). Make a nandroid backup in recovery first before doing anything
7). Flash full update archive (DO NOT REBOOT AFTERWARDS)
8). Flash SuperSU archive (this will restore root)
9). Follow instructions at http://forum.xda-developers.com/shield-tablet/development/root-root-lollipop-t2945044 to use dd to restore custom recovery through adb shell.
10). Wipe cache/dalvik
11). Reboot!
In the off chance that you screw something up and need to force your tablet back into recovery mode manually, the button combo is Power + Volume Down. Also, I was able to dirty flash (not wipe data first) and everything seems to be working fine. As far as the update goes, audio/wifi is working without issue and if anything, the tablet seems more responsive (doesn't slow down/lock up as much). I literally pounded out these instructions after getting my tablet updated so I haven't had a chance to mess around with it much yet.

Error flashing the celkon stock rom

Hi,
I have a celkon campus one a354c mobile. I tried to flash the stock on it. Did the following steps.
1. Downloaded the stock ROM from the following link:
http://www.mediafire.com/file/8xhf0t3qv640je1/Celkon_A354C_300914.zip
2. Copied the zip file to phone external sdcard
3. Booted phone into recovery mode. (Power On + Up button).
4. Hit on the "Apply update from external card option"
5. Navigated to the above file, selected it.
The booting fails saying that signature verification failed.
What did I do wrong here?
That zip file is not intended flash via recovery.
You should have a pc, check in that file for instructions.

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