yashsingh1/xdaforums huggingface dataset:
[General Questions and Answers] Taraku:
Doing what i can

I have been busy with work the past few months. Time is running short. i did get mine to recover from a crash, and all it took was a basic reset and install the updates. at work this idea just hit me. its a rockchip that is on the board. so this would be no different from what is in a mk802... since we are working with that. there must be a way to build a custom ROM, that will use the RCA update signature. allowing us to install things. i agree with your post on using it. but we need someone that would take there time to do so. the other side of me is saying that its a limited edition tablet. RCA only put them out for black Friday. so not many people have them. if we put our heads together we can turn this tablet into something better. just wish i had the money and time to put into this project. that and someone would donate there tablet to a someone that can reverse engineer it. broke or not. When i get time off i am going to look more into the hardware part of it. better screen. because this RockChip can support a 1080p display. HDMI, ect. if you have any ideas or if you want to help start this . let me know. i will be slow at responding to your messages.

Taraku
[General Questions and Answers] jeremyb234:
Taraku, thanks for your response. It seems like there SHOULD be a way to take some of the contents from another tablet with same motherboard and processor (similar specs) and insert them into one of these RCA firmware updates. It would take the expertise of one who really understands the process of how these signatures work. I've come to the realization that I can do all the research in the world, but unless I learn computer programming, I'm probably not going to be able to do this. I have asked a few people if this was possible, but the answers I've heard have not been positive. It seems to come down to this, there is not enough interest by experienced programmers to get these devices back on track. I do not know your level of expertise on this stuff, but I'd be interested to see if you can get this fixed. I have contacted RCA, and they have given me a ticket number and instructions to send it to Venturer Electronics for repair/replacement. Thankfully, Venturer Electronics has confirmed receipt of this ticket number. At this point, I'm considering sending it to them. It sounds like there is a very high chance that they cannot do anything about fixing it because they do not have the OS firmware either (maybe the manufacturer Foxconn International has this). So, most likely, they will send me a replacement. It would be nice if they sent me an upgraded model, but I won't hold my breath. :)
[General Questions and Answers] rsktkr1:
Only Way I can connect is with ADB Wireless

I finally can use adb with this device - but only with ADB wireless. I was able to root this device and with "ADB Over Wi-Fi Helper" application (search XDA) and Rom Tool Box Pro I can turn on ADB wireless and connect with ADB. Since there is no boot loader can't use fastboot. Wish I could make fastboot work - I tried RKTools with no luck. Would like to flash a recovery maybe from another tablet.

UPDATE WAS ABLE TO GET ADB USB WORKING BEFORE I BRICKED IT (SEE BELOW).
[General Questions and Answers] rsktkr1:
Think I bricked this

I was able to root this device and I installed a different font with ROM Toolbox Pro and now I am in a boot loop. Only ADB access is do a ADB sideload of a zip. Does anyone know how I can reflash the stock rom via adb sideload (need rom zip)? ADB is working via Android recovery but only alows ADB Sideload now - other ADB functions are NOT allowed. Before this I bootloop I had ADB working fine.

---------- Post added at 04:04 PM ---------- Previous post was at 03:47 PM ----------

I have the original nand file that I pulled from the root. How do you make that into a zip. I am in the same situtuation.
[General Questions and Answers] jeremyb234:
Congrats on rooting the device. I have had one of these tablets stuck on the white dog RCA screen. I think there was a corrupted system file or something. Anyways, I did lots of research, tried tons of types of roms, etc. To my knowledge, I believe the ADB sideload function is only for installing .apk files, not installing entire ROMs. Learning this, supposing it to be true, crushed my hope of fixing this device. The only other option I've found was to do the update from SD card or cable. However, I've only been able to find 3 rom files that were accepted by this function. They were 3 minor OS updates released by RCA. The links to these should be available on this forum. I think the file names were 1.0.2.zip, 1.0.3.zip, and 1.0.7.zip or something like that. These zip files contain only minor adjustments to the OS, but do not contain the stock ROM. I have contacted RCA and Venturer Electronics (The company who is selling these tablets under the RCA brand), and neither company claims to have access to this factory rom.

My only other thoughts were to see if there was a way to modify these update roms in a way that would reinstall the operating system. However, making the slightest change would cause it to be rejected by the Android Recovery Console. I believe there is some sort of digital signature that is needed to make the system accept the updates. I gave up on it. Anyways, maybe you can pick up where I left off and breathe some life into these devices.

---------- Post added at 07:17 PM ---------- Previous post was at 07:11 PM ----------

I don't know much about Nand files, but I think the challenge is to create an update.zip file that will actually be accepted by the Android Recovery System. One would have to know much about how these things are packaged, how they are signed, and how to create one with the proper signature required for it to be accepted and installed by this system. I've asked around about this, but have never received any positive answers... even from people who know much more than me.
[General Questions and Answers] rsktkr1:
I made a back up of a file called rk30xxnand_ko.ko.3.0.36+ that is 162KB in size that I pulled from the root of the device before I bricked it. I believe this is the recovery file for the original rom. I can upload to dropbox if anyone can do anything with it. I wonder if this file could be converted to a zip. Its a RAR file.
[General Questions and Answers] jeremyb234:
It can definitely be converted. A RAR file is simply a compressed folder full of files. A ZIP file is the same. They are just two different formats. A program like WinRAR can extract the RAR file and repack it as a ZIP file. The problem is that it would need the proper credentials/signature to be installed via the android recovery manager. Unless there is some other way that I and others have not thought of, I think that is the brick wall we are running into. You can try using Winrar to do what I mentioned, but I think there is a low chance that it would pass the verification process.
[General Questions and Answers] cluke40:
Is the only way to root this tablet by connecting to computer?
[General Questions and Answers] champ1919:
Has anyone tried towelroot? I would, but, it's my 8 yrs old tablet.

http://xdaforums.com/showthread.php?t=2783157
[General Questions and Answers] oxendine9381:
you are correct....its easy to open...its two screws....the main chip on the board is the RK3168
[General Questions and Answers] dtriguero:
towelroot does and doesn't work tablet can be rooted without pc but long process using a pc is easiest and safest way to root when have some free time will get a hold of one of my kids tablets and see what I can get going maybe cwm or twrp to start
[General Questions and Answers] champ1919:
Anyone swap out the battery on this little tablet yet? My kid is complaining that it only last 15 minutes now. I wonder if it can be done (and my cheap self can hold off a few months till his bday before getting him something better since he really didn't break it).
[General Questions and Answers] yofun:
Boot loop

I have one of these RCA tablets and its on what seems to be a boot loop. stuck at the RCA screen.

Is there anything I can do to fix this? can someone explain the steps to fix it?
[General Questions and Answers] hijiinks:
no pc

i rooted it with kingroot latest apk no cmputer
[General Questions and Answers] scooter29:
uninstall the drivers through device manager and also buy control panel - programs - uninstall programs and install the drivers again. I need some help also. i installed the drivers but the king root still doesnt connect.. i can see the drivers and eveything looks good but i have no idea whats going on. It would help if we got a better explaning on how to go about it.
[General Questions and Answers] XbxDecrypted:
Works

Enable usb debugging mode. (tapping the build number)

Download pdanet and install pc drivers

Used kingo rooting pc app.

Done
[General Questions and Answers] GloryFreak:
Thanks Takenover83. After using this method, I was able to successfully install my tablet to run ADB commands. After that, I used Cydia Impactor to root my tablet. I will say though, I had to manually install SuperSU from the Play Store but its no biggie. :good: :D
[General Questions and Answers] NiMaD83:
Is there a way to get this tablet to run aps off the microsd card? It doesnt seem to be able to to that or even really pick p the card in general .

-can see psp roms off the int driver but cannot even see the card (actually shows the int as the sdcard)

-even the best aps 2 sd aps cannot send to sd card

-emulators cannot see a ext sd card to get the roms off either

-the only thing i can seem to do is a basic file explorer and install apks from it

btw i AM rooted via this thread so thanks so now what?

*edit - got link2sd able to move some aps over.

yet pps app still doesnt not recognize the ext card

so at this point the main reason for having a ext card is null. cant store music, videos, roms etc since the app cannot detect the card
[General Questions and Answers] scooter29:
I finally managed to root the tablet. I used my friends win 7 32bit and with the first try it went through. my laptop is win 7 64 bit. a while back i read somewhere about win7 64 bit having troubling installing pdanet/abd drivers. so if your having trouble try using a different computer. :):silly:
[General Questions and Answers] Takenover83:
Strange. I had no problems with the pdanet drivers on Windows 7 x64.
[General Questions and Answers] corruption:
Anyone got any leads on a recovery?
[General Questions and Answers] derrickdroid:
I too got this tablet on Black Friday.

Has anyone tried flashing the cwm that ROM manager from play store offers?

Just an idea. I need some sort of recovery before I try to start porting roms
[General Questions and Answers] santi218:
can you explain further what you did?! i cant quite understand what you said. a thorough steps would be much appreciate coz i still have problems getting my rca rooted :(
[General Questions and Answers] Takenover83:
According to CPU-Z our RCT6378W2 has a RK30board. AKA, Rockchip. I tried a generic ramdisk (RK3066) CWM recovery from

http://androtab.info/clockworkmod/rockchip/

http://androtab.info/clockworkmod/rockchip/install/

But could not get it to work. Just black screen in recovery. But I guess its a step in the right direction?

Edit #1: After more investigation I think its a RK3168?

Edit #2: Here is the stock RCT6378W2 recovery partition.
[General Questions and Answers] toxinburn:
I also had this problem go to your developer options while kingo is trying to connect and turn usb debugging off then you will get a prompt on your tablet to allow it from that device and click always enable and bingo it will connect then. Same thing applies to pdanet if it messes up.
[General Questions and Answers] Desarial:
I feel like a complete newbie, but can I use any android 4.2.2 Roms and mods on this? I really want to install paranoid android but I'm 100% in the dark on how to go about this.
[General Questions and Answers] Takenover83:
First thing's first. We need a good recovery such as CWM. Then you may start seeing rom's being ported over.
[General Questions and Answers] djalup:
BAM!

This may be the first time i have posted on XDA- been on others before. Anywho...

So since I do not have 10 posts yet I can not post the link to the file... lame.

4shared com/zip/jEV0lGGe/RCT6378W2_Update_OTA_V101.html

Pretty much I have not flashed this yet but when you pop it on the sd card and put it in the tablet it says a system update has been detected would you like to update? USE AT YOUR OWN RISK - I take no responsibility if something is messed up on this or it does not work right.

This is the OTA update dump from the /cache folder.

Will need to be re-named Update.zip to apply

Perhaps we can get something going on this tablet with this.

DO NOT FLASH THAT FILE! It will cause android to loose the ability to access the settings and doing a hard reset via the recovery will cause it to not get past the welcome setup screen. But i will leave the file up so we can use it to dev. Will talk later after i exchange my tablet for the second time... sigh...

well since I was going to take it back anyways and get it exchanged does anyone want to build an update.zip for me to try and flash?
[General Questions and Answers] Poweruser75:
I also have the same tablet and am waiting for a cmrecovery and rom. i do hope someone thinks this is worth messing with. Thanx guys.
[General Questions and Answers] Taraku:
Diging into the hardware

I did manage to get root on the device. And as soon as I get the one I ordered, I will be tearing it down to find out what is inside :)

Once I get all the info. I will post everything. Hope it help
[General Questions and Answers] derrickdroid:
recovery building?!

Anybody think they could build a recovery using this guide?!

http://xdaforums.com/showthread.php?t=2132672
[General Questions and Answers] Gorilla_Hands:
Worked like a charm first time with no problems.

:D I just wanted to say thanks for this thread. I just got the RCA RCT6378W2 made in China El Cheapo tablet from Wal*Mart on Black Friday for $49. I don't usually do those sales because I think it is stupid but I wanted the $58 Vizio sound bar they had and they put the stack they had of them (only about 6-8 of them) down on the floor behind a tall bakery rack that had all of the tablets for that sale on them. There were hundreds of people wanting these tablets along with the others they had but nobody was there for the sound bar. So while standing for an hour waiting I thought to myself "If I have to stand here for this anyway then I'm gonna get a cheap tablet too and make the wait and dealing with the crowd worth it." So at the last second I reached in and got one of the last ones on the shelf and reached down and grabbed me a sound bar. So I got this thing home and it is pretty cool and a very small investment at $49. We are some of the few people that still didn't have a tablet even though we have smart phones. I don't like that it doesn't have Bluetooth but didn't expect it to have much for the money. Then as I set it up I was trying to put simple apps on it like Autozone, weather, Craigslist, etc. The basics and it keeps saying "Device not compatible" for a bunch of normal apps. So I wanted to root it to see if that will allow it to take them. I followed your instructions after searching all over the web for a way to root this thing and it all went through smoothly with no problems so far. I will keep you posted on the app issue later but for now I just wanted to say thanks for posting this so I could get it rooted without trying it another way and bricking or boot looping it. Keep it up!
[General Questions and Answers] t12icky0:
I'll give it a shot tonight when I get home.
[General Questions and Answers] goofwear:
Last night I found on the xda forums romdump.

http://xdaforums.com/showthread.php?t=1771347

I was able to dump our ROM but the kernel did not dump properly. It was an empty file. I did successfuly dump the stock recovery and system partitions along with two more.
[General Questions and Answers] t12icky0:
currently building a touch Recovery. i will report back with the devastation or happiness..lol.

---------- Post added at 05:40 PM ---------- Previous post was at 04:50 PM ----------

check this out..

https://play.google.com/store/apps/details?id=com.jmz.soft.twrpmanager

INSTALLED and doing a nandroid with it right now. Its a work in the right direction atleast..lol.

Still working on the cwm thing
[General Questions and Answers] Takenover83:
A in "OS" soft recovery solution is not a real solution. Because if you can't boot into your "OS", then what?
[General Questions and Answers] CaptnCaveman:
So does this root work on this model too or what?:

RCA RCT6077W22 tablet w/ Android Jellybean 4.1.1- v1.0.1, 8GB built in storage, 1GHZ processor, Google apps installed, kernel is 3.0.36+EM2928-789A@V01M#132.

I have this model and would like to have it rooted as well.
[General Questions and Answers] Androiduser11:
What have you guys unlocked so far from rooting the RCT6378W2? Are you guys still able to update your apps? I'm wondering if i should just install a battery saver app instead of upgrading from Jelly Bean to KitKat. KitKat does expand the battery life, but is it even worth the trouble you guys are going through with this whole root, recovery, flash, and i'm sure somewhere down the line upgrading the current version to the latest KitKat from a ROM i'm assuming. Thanks in advance.
[General Questions and Answers] djalup:
Update Link

Here is the Direct Link to the update.zip this will download the latest update for the RCT6378W2.

50.57.107.96:2300/OtaUpdater/android?product=RCT6378W2&version=1.0.1

That will download directly from the RCA OTA server.
[General Questions and Answers] t12icky0:
NVM..recovery was a fail. still working on it.
[General Questions and Answers] Androiduser11:
Yesterday the link was working, but didn't know what to do with the zip file. Today the link doesn't seem to be working. Any ideas to what the v1.0.1 has in features compared to v1.0.0 by any chance? Thanks in advance.
[General Questions and Answers] djalup:
No idea. The version number on the end of that link seems to not be accurate, when you download the update it will download a zip file called 1.0.3.zip

The only thing i can tell that this updates is it adds VUDU.apk, and a new systemui.apk and settings.apk. The settings update the have removed the android licence from. (go figure)
[General Questions and Answers] corruption:
kingo root

Since I'm so damn impatient and couldn't wait for the SDK/ADB to download I used kingo knowing it's a fairly shady root tool.... Anyway I was removing bloat with TB I noticed a system app in Chinese (#%$4.2.2#%$) so I froze it, i would've uninstalled but didn't think it was a good idea without a custom recovery and/or nandroid. Like I said so far so good. What's really throwing me for a loop is that I've cleared and uninstalled the Walmart app three times and just like that annoying cat that freaking bloat reinstalled itself! Any idea how to make it stay gone and why/how it's reinstalling itself

See attachment

:confused:
[General Questions and Answers] Androiduser11:
That Walmart app was the first issue i've noticed on this tablet after purchase. It's got to be some sort of glitch that was probably done on purpose since no matter what utility you use to uninstall it, it will always be back on the tablet after a power up.
[General Questions and Answers] Takenover83:
Delete the apk's from /system/app/preload (if I remember correctly).
[General Questions and Answers] Androiduser11:
I cannot delete any of the .apk files for some odd reason. By the way, the Walmart.apk is in system/preinstall folder and not in the system/app folder. I have checked every single setting to see what is holding this back as far as deleting these .apk files, but can't find anything. I'm using the latest version of ES File Explorer since the Explorer that came with the Tablet wouldn't let me go past the SD Card, Internal Memory, or USB folders. I've even tried cut and paste to another location on the drive without success. It does cut, paste, and delete, but the Walmart.apk is still in system/preinstall.

ANSWER: The Tablet needs to be rooted in order to delete these files!
[General Questions and Answers] t12icky0:
I'm still having trouble making the cwm recovery. Just boot loops.
[General Questions and Answers] Jimmy422:
Is there any chance you can upload it?
[General Questions and Answers] Takenover83:
You need to pack the recovery IMG with a special version of mkbootimg. If you do not you will just get a black screen and thrown into the boot loader. I no longer have this tablet but I might be able to hack a working cwm for u guys.
[General Questions and Answers] Dalamar1320:
That would be AWESOME if you could. I should be getting mine soon, as they were out when i went to get one, so i had to do the "1 hour guarantee" and wait for it to be shipped. I am looking forward to see what i can do with this, and a working recovery gives me peace of mind lol
[General Questions and Answers] Takenover83:
I threw this together real quick. It is a generic cwm with the kernel from rct6378w2. Someone will have to test it. Back up your stock recovery first. My girlfriend still has this tablet, so if I can get her to let me borrow it, maybe I can test it for myself.

adb push flash_image /dev/

adb push generic-cwm.img /dev/

chmod 755 /dev/flash_image

/dev/flash_image recovery /dev/generic-cwm.img

chmod 644 /system/etc/install-recovery.sh

Let me know if it works.

Edit: Pulled. Not working. Will edit if I get something going.

Edit #2: Hmm, I can't even repack the stock recovery/kernel and get it to boot. So maybe the mkbootimg I am using is not working with this tablet? Will test more later.
[General Questions and Answers] Androiduser11:
I never downloaded the zip file, just cancelled the pop up download window since i didn't know what to do with it.
[General Questions and Answers] t12icky0:
That would be cool..I tried making one but just got boot loop and black screen.
[General Questions and Answers] Androiduser11:
Did anyone know that the Dual Core ARM Cortex-A9 processor that is in our tablets is capable of running [MENTION=1247388]1.6[/MENTION]GHz? So far i don't notice any reason to overclock it, but i'm sure some of you have been installing those 1Gb+ games that have either crashed or ran choppy. Might want to look into this. The Dual Core ARM Cortex-A9 in my Tablet is the rk3168 chip by rockchip. Just recently installed CPU-Z and found out alot of information regarding CPU, GPU, and etc.
[General Questions and Answers] t12icky0:
Good too know about this. I'll try overclocking it and seeing it.
[General Questions and Answers] Androiduser11:
Just like the desktop processors scene, they are going with batches on these Cortex-A9 that overclock the most. If you get a chance just post back which benchmark utility, overclocking software you used and the settings that you adjusted. Thanks.
[General Questions and Answers] TotesMyGoats:
I heard that the chip in these tablets supports a much higher resolution screen. Read it somewhere, YouTube I think. I might look into getting a screen off of ebay to test it out.

and 1.6GHz overclock sounds great! I just wish we could get CWM on here