yashsingh1/xdaforums huggingface dataset:
[Android General] pr3dicament:
^ See what I mean? My other RCA device supports it, and I went through hell to get it to work, and I don't even use a custom rom with it.. I just needed to root it.. and it wouldn't unlock the bootloader, had to use the method given in this thread... but this is a bit different.. I believe it's another 8127, that would be my third one of those, but that still isn't enough to know the partitioning for a scatter. I'm honestly gonna just make my own rom and flash it with fastboot if I can't get ADB working. I'm trying to tell myself it's a driver problem, but the others work in both Windows and Linux.. custom roms are really what I care about. Hell I'll flash a stock rom and mod the hell out of it.. I love making roms.. but I need ADB to do it. Fastboot can with an unlocked bootloader, and that's where I'm stuck.. it also seems like the microUSB doesn't respond to any type of USB OTG connections.. yet I can plug in a USB thumbdrive in the native USB port. I literally have to get a rom with ADB installed and rooted or just somehow get the damn boot loader unlocked. I've been racking my brain about this for awhile now.. beyond this bull****, the tablet itself is actually really good regarding performance. You also mentioned Xposed... 90% of roms use a bunch of different Xposed mods in their custom roms... so honestly that's not what I'm worried about. I'd love to find a LOLLIPOP stock rom for this particular tablet. I've got one last idea up my sleeve, and if that doesn't work, just to make sure.. I'll just take it back/swap for a new one.. never know if one of the ports are defective.
[Android General] pr3dicament:
Found the stock firmware, downloaded it.. just finished. I found the scatter.. if I can do something with this I'll update you guys. Maybe we can bring this device into this thread.. I'll let you know how the unlocked bootloader goes. I just needed the scatter, now I've got it. Will update when I can on progress.
[Android General] pr3dicament:
God damn it.. here:https://drive.google.com/file/d/0B0rCoJzu2E3IT2dDQ2NIeTBOZWs/view?usp=sharing

As you can tell, I have V1.15.30 -- rcalkunlocker doesn't work.. or hasn't for me. I've specified the file too. did what i could, looked it up on here.. didn't get many hits to be honest.

if I had the version I'd be able to flash it.. everything is ready to go.. and I know now that this is not a bad tablet. it works, just no root therefore no ADB yet.

If I can get a way to unlock that bootloader (no volume keys) i'd be all good. After that I could simply root it and then my custom TWRP would then be flashed. It's got an 8127 --- it's very similar.. but it's just saying no right now, it is locked, volume keys not programmed in fastboot.

If you guys have anything about this version, let me know. I do remember seeing someone making one for the same tablet but for the version of the bootloader that I have... and using MarshMallow. -_- It won't let me flash anything else and again, rcalkunlock hasn't worked for it following the same instructions. I'd like to try and do a hex edit with this. *sigh* Or just something to get it going.
[Android General] randomnerdman70:
Need a patched bootloader?
[Android General] pr3dicament:
For 1.15.30 yeah.. RCT6513W87 (Galileo Pro 11 -- MM 6.0). Looks like that's the case.
[Android General] randomnerdman70:
Got a copy of the stock bootloader? If so link me to it and I'll see what I can do.
[Android General] pr3dicament:
Alright.. the attached .zip below has everything you could possibly need aside from "system" and "userdata" -- It's the same directory structure as the stock rom, as well... all stock. I know it's 99% unlikely to be necessary or that you'd need anything aside from the boot loader.. but since it isn't much to upload (under 20MB).. I just figured in case there were anything else you needed that it'd all be there.

Thanks.
[Android General] jedimasteryoda:
RCA Viking II

RCA Viking II 10 inch

Model: RCT6603W47

is there anything working for it?

thanks
[Android General] NepoRood:
Most likely not. This thread is for the 1st Viking Pro, which we all had at the time. I think everyone has moved on since then, I could be mistaken though :p
[Android General] jackobannon:
smartmanvartan - for all of my knowledge of things 'puter, I know vdl about android. I have RCA 10" Viking Pro RCT6303W87DK-ANDROID5.0-V66-V2.12.20-B and I think all I want is root access. I want to be able to use wired ethernet via USB port and that takes apps for rooted devices. Not sure what else I would need. Not looking to put opensuse or Ubuntu on it, have laptops for that. This is more of a work tool, easier to handle than a laptop. Sorry about the long post but the question is if there is any compelling reason to go after anything more complex than just rooting the box? Looking for your input. Thanks, Fred
[Android General] smartmanvartan:
If you wanna just root it, than that's fine. The thing is that once you root your device and start messing with the system, you may end up in a bootloop. And that's where having a custom recovery and a backup of your system comes in handy. Now in your case, being on the v66, if you do wind up in a bootloop and you don't have a backup to restore, it's not so bad of a thing. There is alot of available firmwares you can flash to fix it if it bricks. So in short, yeah just root it. Use method 1 and 1.5. and if you get problems down the line then cross that bridge when you get there. :) All the best!
[Android General] randomnerdman70:
Also I suggest you make a thread specific to your device.
[Android General] pr3dicament:
Said thread already exists.. literally no answers because it's so new. I simply didn't create it.. definitely looked, though. There's a couple of posts wondering about root, which is no, so far. The other asks about a stock rom. That's where I found the stock rom for the device. It's a MT8127 and it's very similar as far as I can tell. That's precisely how I got here.
[Android General] Jadevinicole:
I have a generic PS3 controller that I use with an SNES emulator on this tablet(RCT6303W87M7). Kinda tricky to configure the inputs, but it does work.
[Android General] cotstem:
I have a different version than those listed in the guide -- RCT6303W87 but with version 5.0-V63-V1.12.0. Would any of the 12's work for flashing? I'm getting a "system UI has stopped working" error.
[Android General] NepoRood:
Yes, any of the x12x versions should work for you, just make sure to follow the guide :good:
[Android General] Jadevinicole:
Has anyone found a working root method for the RCT6303W87M7?
[Android General] piperx:
None that I know of
[Android General] cotstem:
Wow

Thank you so much for creating this guide. My mother owns a business and uses her tablet to run square for credit card transactions and she was facing having to buy a new tablet. Your guide fixed my issue and got my mom's tablet up and running quickly so that she lost a minimal amount of business.

Thanks!
[Android General] usalabs:
I have an RCA Viking Pro 10.1.

I downloaded the right firmware using the last number in the build, I got the drivers, and the flash, but guess what? Step 2 does NOT wait 5 seconds,,,, in fact as soon as I plugin the power lead (after plugging in the male->male USB cable), the device manager flashes once, then in less 1/2s it flashes again, which indicates the device manager finds,, connects but then the tablet disconnects before windows can latch on and display the new device, and show a 'New hardware found...' notification,,, sooo, some how, this version of my tablet's firmware (ANDROID5.0-V63-V1.12.20-B) literally has no way of flashing any firmware.

I would like to have the newest Android, but even RCA have no intention of upgrading from v5.0 as there is nothing on their website. These tablets are just a batch make, sell and forget product.
[Android General] NepoRood:
Agreed :highfive:

And yeah, you got less than 5 seconds, you have to be pretty quick, it took me like 3 tries, IIRC
[Android General] usalabs:
The only problem there, is that I don't see anything that pops up, or expands, it's not even 1/2s.

The connection doesn't allow windows to identify that a USB device has been connected, all it does is, flash, then flash again, so it's literally impossible to know what the name is to even click on, ,,,usually when a new device is detected, it opens the relevant tree and shows the device, but the time it takes windows to detect it, then display it, is far too quick, windows doesn't get a chance to even open the relevant tree,,, even with all branches of the tree from the root, is open, as soon as windows detects a connection, the tree is refreshed, all branches closed and then refreshed again, with no new connections, so, basically it's not possible to catch that connection no matter how fast someone is, because it doesn't have the time to show the connection, long enough for it to be clicked on.

The only other solution would be to have the firmware in a format that can be placed on an SDcard then I can use the Vol+ Power to open the recovery menu, then I can select install update from SDCard, oh, and for some reason, un-be-known to me,,, this particular model has the fastloader unlocked, but it's not activated with the Vol- Power, but using Vol+ Power and selecting 'Boot to bootloader' and shows 'Fastboot.......' at the far bottom left of the screen, there is also the selection of installing upgrades using adb, but it seems the *only* way to install any custom firmware is to use the SDCard and install it via the stock recovery menu.
[Android General] NepoRood:
I quit using Windows a while ago (unless I'm at work :silly:), I'm all Linux now. It was pretty easy to get the flash tool going on Ubuntu, as there were really no drivers to install, just some edits to make.

I recommend looking into that...
[Android General] usalabs:
I didn't think about using Linux,,, I have a dual boot system with Kubuntu 14.04 LTS and Windows 7, I have to use windoz, mainly because I'm a music producer, and a lot of the software for music production only runs in windoz, anyway, I'll try Linux, I believe I can use 'playonlinux' for the flash tool, or I can run windoz XP in a virtual machine.

What are the 'edits' to make and to what file? I'm no Linux noob, as I built and run my own home server running CLI mode OpenSuSe accessed via PuTTY SSH, and have installed Kubuntu along side windoz using W.U.B.I.
[Android General] NepoRood:
I followed this Guide, and another somewhere, that I can't remember, sorry.
[Android General] PhillMc:
I know it's been a while; ended up having to get another tablet but, alas, that one has recently died; still have my x.10.x staring at me on the shelf -- wondering if that firmware has been worked out yet? :crosses fingers:
[Android General] NepoRood:
Not that I know of, maybe [MENTION=4666511]smartmanvartan[/MENTION] can look around the Chinese websites, he's good at finding firmware. All my links seem to be broken now :confused:
[Android General] usalabs:
OK, well, I tried Linux, and it too don't even detect anything, I tried using lsusb the moment the power was plugged it, and nothing was found,,,, soo, I guess this version of the RCA tablet cannot be flashed by any other means except using an SDCard and an upgraded firmware file on SDCard, then use the tablets recovery mode to upgrade from the card,,,, sooo, if anyone has an upgraded firmware for 'Build RCT6303W87DK-ANDROID5.0-V63-V1.120-B' that includes Android 5.5 or higher, as well as the original stock firmware (just incase) and is in a format that can be placed on an SDCard, so that I can then just use the VolUp + Power to enter the recovery mode, then scroll down to 'Upgrade from SDcard',,,, can he/she point me in the direction to where those files are? Upgrading from SDcard *IS* the only way the firmware can be upgraded.

Those tablets were never designed to be flashed any other way but SDcard,, that's why people are having *major* issues with attempting to use adb or the flash tool and failing.

I even tried following the guide that NepoRood suggested, but that didn't work either.
[Android General] NepoRood:
I can only get the flash tool to work in Superuser mode, ie: sudo ./flash_tool

Otherwise, it wouldn't detect the device (sorry, I just remembered that...)

PS, there is no "Android 5.5" :silly:
[Android General] smartmanvartan:
At a quick glance, http://pan.baidu.com/wap/share/home?uk=2958126999&third=0

This list looks like it has a lot of stuff. L take a look through it tonight and let you know...
[Android General] usalabs:
Regarding Android 5.5, I was using a number greater than 5.0 which is already installed on the tablet, so anything that higher than 5.5, even though 5.5 don't exist, would be better than 5.0,,,,,my wife's Samsung Galaxy Prime uses 5.1.1.

OK, I managed to get someone on another forum that used to work for RCA here in the USA, and he told me, the reason that windows is not quick enough in detecting the tablet's connection, is because there is a type of 'serial' connection that only RCA have access to, which locks the connection open, but he don't have access to that software, but he did tell me there is a work around, which some of it is what people are saying, but it's the actual installation of the Mediatek drivers that are different to what other people are saying. Other people are saying to try and catch the connection and 'update' the drivers,,, this is wrong, the RCA guy said to do this:-

The below steps assume one has already downloaded the Mediatek USB drivers.

1.............Plug in the power to the tablet, and ONLY the power.

2............Press and hold VolUp and Power to enter recovery mode

3............Using the Vol up/down, highlight 'Reboot to fastboot' ------- This will open up the USB connection.

4............Connect USB male->male cable to the computer, then to the tablet, then press the power button to select 'Reboot to fastboot', the tablet will boot into fastboot, with the words 'Fastboot...' at the bottom left of the screen.

5............Windows will say 'New Hardware Found' and will try to install the drivers from the pre-configured drivers folder then windows update, when it fails, open device manager then right click the 'Unknown Device', then click update, and browse to the folder that contains the Mediatek drivers.

6...........Unplug the tablet power, then press the reset button at the back of the tablet

7...........Follow the other instructions set out for installing and running the flash_tool.

Always REMEMBER before pressing that download button in flash_tool, DO NOT connect power to the tablet, it is OK to leave the USB cable plugged in, but do not insert the power plug until you have setup the scatter load file and then press 'download' in the flash_tool, then and ONLY then do you plug in the power plug, then the flash_tool should show a bar moving across the bottom of the tool and a pop up green check circle appears to show that the flash was successful.

It is when the tablet is in the fastboot mode that the USB connection stays open and the drivers can then be installed.

I tested it on my tablet and I successfully flashed the RCT6303W87DK-ANDROID5.0-V63-V2.12.20-B-EMMC-user-Kingston-V6.1_20150811 files using the flash_tool, but even though I flashed that one, the version still says it's Android 5.0, where can I find the same file but instead of having ANDROID5.0 in it's version name it would have ANDROID6.0? Such as:-

RCT6303W87DK-ANDROID6.0-V63-V2.12.20-B
[Android General] usalabs:
ADDENDUM

Don't worry, I've trashed the tablet,,,, something went wrong in the flash process and the bar stopped at 50% for an hour, and now the tablet won't even power on, it won't boot to recovery, it won't even show the charging icon, nothing works anymore, not even the charging light comes on,,,, the entire tablet has now become nothing but a piece of plastic and glass.

That is what happens when you mess with damn so called custom firmware, next time I buy a tablet (which won't be for a while now as I can't afford the $600) , I'll make sure the manufacturers actually push updates, if they don't after a month, then it get scrapped and the next one bought and so on,,, that's how these manufactures work,,,, they build tablets, don't upgrade, and the only re-course is to trash it and pay a higher price for the next newest version, and when that doesn't get updated, trash it, then buy the next one costing even more, and so on,,,,, tablets as well as phones are made disposable.

I shouldn't have got greedy and wanted a newer Android version,,,,I should have left as is, and being that RCA won't ever push updates, I should have just accepted Android 5.0, and now all I had was Android 0.
[Android General] NepoRood:
The risk involved when messing around with these devices, however, it's not necessarily trashed, I fixed 2 "bricked" Maven Pro's (also MT8127) for another member, but the tablets were sent to me...

As for being "disposable", that's not true either. My phone shipped with KitKat (4.4.4) and is now running Nougat (7.1.2), I've had it for almost 3 years. The key to longevity, is to buy devices that have open source hardware, kernel and vendor sources (ie: qcom)

Also, [MENTION=4666511]smartmanvartan[/MENTION] is looking for a device, as he has one with a busted screen (or something like that), he may take yours off your hands
[Android General] smartmanvartan:
No my board is bricked beyond resurrection. Thanks for looking out for me tho :)
[Android General] usalabs:
It looks like mine is too, to far beyond recovery, it's like there is no power at all, sooo, I think it's time to introduce it to Mr sledge hammer, and buy another one, but this time I'm *NEVER* going to attempt to root it, or even try a custom ROM, the manufacturers built it with the firmware that runs on that particular device, and only they create the *RIGHT* firmware to upgrade it, if they choose not to upgrade, then fine, I'll just keep using the stock system and leave well alone.
[Android General] PhillMc:
Hold off on the smashy smashy (I know it's fun, just wait).

I ran into this issue when I first attempted to flash mine -- sounds like you goofed the preloader; this partition handles button presses and charging, among other things.

Try flashing the preloader for your device -- this may solve your immediate problem.
[Android General] usalabs:
I can't do anything, there is no way of flashing anything, the entire tablet is like there is no power at all, and as you said, the preloader handles the buttons and everything else, (f the preloader is anything like the BIOS in a PC, then without the BIOS there'll be no way of ever booting the PC unless the BIOS chip is removed and re-flashed using an external programmer), so that means if the preloader is corrupt, then there isn't going to be any USB connections for flashing, following the exact same steps for flashing the firmware using the flash_tool, but instead of selecting everything, I only select 'PRE_LOADER' then I hit the download button, and then connect power (while the USB cable is connected) to the tablet, which before the screw up, flash_tool would see the device and successfully flash the files, but now flash_tool don't even see any USB device at all, and before the screw up,,, windows device manager would very briefly see the USB connection then immediately disconnect, it doesn't even do that now, I could say it's like trying to plug in power to a socket when there's no circuitry connected, or trying to start a car with no engine, nothing works, and Mr S.H. is getting very impatient. :)
[Android General] NepoRood:
It's not easy, but, as a guitar player that is accomplished in making complex chords on a guitar, I was able to do it by myself. What you need to do is select preloader only for download/flashing. Then, click the download button, press and hold all 4 buttons on the tablet (Power, Volume Up, Volume Down, and Reset), then plug in the power to the device. Do Not Release the buttons during the flash!

After the preloader flashes, flash the compatible "Surf" firmware (if you don't like looking at the dogs), but don't flash the Surf preloader.

Get some help if you have to, after I discovered this trick, I flashed all kinds of incompatible firmware on my Viking, and eventually ended up just running the Surf firmware.

I "bricked" my Viking at least 30 or more times, experimenting and building TWRP :cool:
[Android General] usalabs:
I'm going to be flashing the RCT6303W87DK-ANDROID5.0-V63-V2.12.20-B-EMMC-user-Kingston-V6.1_20150811 firmware, and *IF* it works, I'm never attempting to do that again.

Holding all those buttons, is that with or without the power/charger plugged in?

---------- Post added at 08:04 PM ---------- Previous post was at 07:40 PM ----------

OK, the flash_tool did successfully flash just the PRE_LOADER using the key combination, but it's still dead, and that key sequence don't work anymore.
[Android General] NepoRood:
Hold all the buttons, then plug it in (did you read the post?) AFTER you flash the preloader, flash any compatible firmware after that, but DO NOT FLASH THE PRELOADER (with said firmware).
[Android General] usalabs:
Yes I did, I followed exactly:-

1..........Connect USB cable to tablet then to PC

2..........Load up the flash_tool

3..........Load in the scatter file

4..........Only check PRE_LOADER

5..........Click on Download

6.........Press and hold all 4 buttons (Power, VolUp, VolDown and Reset), then plug in the power.

My wife plugged in the power while I held all the buttons,,, this worked for the preloader, flash_tool showed the green check circle,,, I then unchecked PRE_LOADER, and checked all the other files, removed power from the tablet, hit the download button, but when I tried that key sequence again along with plugging in the power, nothing happened, I tried it 10 times, and nothing happened, no flashing, nothing.
[Android General] NepoRood:
No need to hold the keys down for flashing firmware, just flash like normal (you'll get an nvram error on setup, but we can fix that)
[Android General] usalabs:
Ok, the normal (USB connected, start flash_tool, load scatter file, uncheck PRE_LOADER, hit download, connect power plug) firmware flash worked, but still no power up, and no boot loader, I flashed everything but the pre_loader, the green check mark appeared, it showed 'Downloading flash. x%), in yellow, then when it reached 100% the green check mark popped up,,,no nvram errors, I tried pressing the tablet reset button, then tried to power-on,,, nothing, I even tried holding the power button and pressing the VolUp to get to the recovery, still nothing,,,,,Im' wondering if the pre_loader for RCT6303W87DK-ANDROID5.0-V63-V2.12.20-B-EMMC-user-Kingston-V6.1_20150811 is a working pre-loader, as I don't have and can't get the original stock firmware, and if the above is an original stock firmware, then it isn't working.
[Android General] NepoRood:
I personally used the first one on the list in the OP (the V77) for preloader, then flashed the Surf V11 firmware to the device. When you plug in the power cable, does the little charge light come on? Either way, let it charge for a bit, the battery may be dead with all the work you've been doing...
[Android General] usalabs:
The Charge light don't even come on,,, it used to along with a pic of a battery charging on the screen.

I'm downloading V77 to see if that works,,,,,did you say to use the pre-loader from v77 first, then flash everything else, or just do a firmware upgrade which would format then flash the firmware?

I don't see the surfV11 in that list, do you mean the surf1001?

ADDENDUM

I found a stock firmware RCT6303W87DK-ANDROID5.0-V63-V10.12.0_T8515B_V6.3_PCDDR31G_20151106 but it don't have a scatter file for flash_tool