yashsingh1/xdaforums huggingface dataset:
[Android General] Medfordite:
Is there a decryption key for the download? It is asking for one on my end.
[Android General] darkensx:
my bad here it is https://mega.nz/#!oFAzlISY!aLAcK-1zntU3eYbA7ZNb8UQBa61dgrJoYsHNNx2UxDY updated op as well
[Android General] kivar2016:
does the battery appear to be easily replaceable?

---------- Post added at 06:41 PM ---------- Previous post was at 06:34 PM ----------

Is he getting any power to the tablet at all (Iturning on) from either the usb or dc jacks? If the tablet itself is getting power, then the battery could be bad.

---------- Post added at 06:42 PM ---------- Previous post was at 06:41 PM ----------

Is he getting any power to the tablet at all (Iturning on) from either the usb or dc jacks? If the tablet itself is getting power, then the battery could be bad.
[Android General] Medfordite:
No charge light when plugging in. I have done the following:

AC Adapter

AC Adapter and Micro USB

Micro USB Alone

Wife has same model tablet , tried her charger as well.

None of which provide power.

I can easily disconnect the battery and believe it could be swapped out. But I do not believe it to be discharged because it was fully charged when I turned if off last time.

I had tried flashing TWRP to it and it caused it to boot loop, RCA screen, boot, RCA Screen, Boot ...etc. That was the last sign of life I saw on it.

Now looking for parts to get it back up and running.
[Android General] jerryvail35:
yup. sounds to me like a fried mother board. hope you can find a replacement.
[Android General] NepoRood:
Incompatible TWRP, I've done this a bunch

Try flashing the stock recovery using the Flash Tool, I've linked below what we have of x10x firmware so far.

It also has the ClockworkMod recovery I ported.

Link
[Android General] PhillMc:
I'm attempting an x.9.x flash as suggested -- so far have gotten the most activity out of this. 10 minutes in -- will update when I have more.
[Android General] PhillMc:
Total flash was a no go -- but, now Windows again recognizes the device as "Preloader" and not just "USB", so something was corrected.
[Android General] NepoRood:
This may be worth a shot:

Flash the CwM recovery and see if it boots, if it does, maybe you can restore the backup that was uploaded the other day...
[Android General] PhillMc:
It flashed without issue, but no boot. No doubt I need to get my hands on the preloader...

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Just to ensure my information is up to date (been busy) -- there is no external indication of life (charging light, button functionality, etc) but I'm still able to flash -- haven't attempted a readback as that's not something I'm familiar with yet.
[Android General] NepoRood:
No doubt, I've tried several different things to get a copy of my preloader from the tablet itself, all to no avail :(

There will be some firmware pop up eventually, just like it did for our version(s), just have to be patient...
[Android General] PhillMc:
Not impatient -- just drooling a bit: I see the end coming. :D
[Android General] PhillMc:
Are you able to pull the preloader in any form; flashable or not? Reason I ask; I like puzzles -- one of my favorite projects of all time was deciphering a proprietary database format by staring at the HEX. It may be possible, although remotely, to work out why it won't reflash binarily.
[Android General] smartmanvartan:
Just for ****z and giggles, try this version:

https://drive.google.com/file/d/0Bz4bOoJ_E5XzNVMwTFg3alRzVk0/view?usp=drivesdk
[Android General] darkensx:
I would volunteer to pull mine but like neporood said was not able to on theirs but I don't have the the correct hex address for v10 there seems to be address discrepancies between x.9.x x.10.x and x.12.x neither 9 or 12 hex addresses are correct for 10. Is there a way to mount the section that has the preloader as a loop on Ubuntu? To pull the raw data at least.

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Also what does the preloader do specifically? What does it "preload" ?
[Android General] smartmanvartan:
The version I posted, never worked for any one with a x.9.x and I'm wondering if it's not a x.10.x that was miss labeled...
[Android General] PhillMc:
I'll give it a shot when I get into the office. If we could pull the entire block device (ie all patitions in one go) it would be a simple matter of going through the HEX and remove the data at the known addresses; this would give us a starting point at least. :D

Also, I got another tablet; this one is now just a test subject for the products of this forum.
[Android General] NepoRood:
The wife yanked me off the grid this weekend, I have no access to anything but my phone. Seems like preloader partition is 4Mb, or 0x4000, but don't hold me to that. I'll get home sometime tomorrow and will double check
[Android General] NepoRood:
Ok, so I can pull my preloader 2 ways with the SP Flash Tool, neither are flash-able though:

1) The Entire partition; Start: 0x0 | Length: 0x40000

2) Half the partition: Start: 0x0 | Length: 0x20000

No other settings I tried allowed me to pull it, not even the exact size of my preloader...

Also, using dd, causes the tablet to just reboot :confused:

UPDATE

According to My New Master [MENTION=4478781]yuweng[/MENTION], you have to edit the preloader.bin file with a hex editor. Do a readback, then open the file and delete all the FF and 00 at the end of the file. I will test this when I get a chance, but if any x.10.x user wants to give it a shot, please let me know how it goes.

Source <-- His post about this
[Android General] darkensx:
preloader bin via dd is attached from x.10.x needs hex edit done though. just remove the .zip extension its just so i could attach it.
[Android General] NepoRood:
Ok, so I took out the trailing FF and 00, I suggest this be tested on a bricked tablet first, [MENTION=7406916]PhillMc[/MENTION], not one that is working.

I did the same thing you did, just remove the "zip" extension before flashing.

Best of Luck, I hope it works :D
[Android General] PhillMc:
Will be giving it a shot today. :)
[Android General] smartmanvartan:
Think you can do the same with the lk.bin?
[Android General] PhillMc:
I'm comparing the HEX of all the preloaders; so far, it seems the X.10.X upload also has "extra" data in the front of the file -- at 0x0800 of the upload it begins matching the layout of the other preloaders.

I'll be playing around with it for a bit -- I'm having a good feeling about this. :D

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If someone can upload whatever they can pull of the lk.bin, I'll compare those too. Pretty bored today.
[Android General] smartmanvartan:
Just out of curiosity, did you ever try that version I suggested?
[Android General] PhillMc:
Was going to today, but this popped up before I started so I decided to start by comparing the two. Think I may have hit on a version identifier at 0x020 (plus 0x0800 in the x.10.x upload) -- it's the only difference in the first 512 bytes of each file -- the rest is identical.

---------- Post added at 11:40 ---------- Previous post was at 11:18 ----------

Even Better! It's a file size identifier! [MENTION=4666511]smartmanvartan[/MENTION] , the preloader you suggested indicates the file ends at 0x1c3f0 ( 115,696 bytes [112.984375 KiB] ), which it does. The x.10.x upload indicates the file ends at 0x1c330 ( 105,504 bytes [112.796875 KiB]), which is does not, BUT if we were to remove the first 2,048 bytes (2 KiB or 0x0800 in hex), it does.

Trimming and continuing comparison.

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It looks like the first 2 KiB of that file is actually the device partition table.

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Could someone with an x.10.x with it's preloader in place attempt a pull from 0x00000800 with a length of 0x0001c330 and post the results if it pulls.

It's looking like RCA simply shifted the preloader 2 KiB down to throw off cracking attempts.
[Android General] PhillMc:
This preloader flashes, but I'm getting nothing from the buttons.

Simply remove ".zip".
[Android General] PhillMc:
Further, the unmodified version would not even load in the flash tool. I've reflashed, but I'm getting absolutely nothing as far a boot is concerned -- am I missing something?
[Android General] smartmanvartan:
That's where the bootloader kicks in.. But are you getting reaction from Windows?
[Android General] PhillMc:
YES! Getting the original behaviour! Windows sees "Preloader" for a couple seconds, then gone. I think we nailed the preloader for x.10.x
[Android General] smartmanvartan:
Good! Bootloader handles boot and buttons. That's the next one.
[Android General] NepoRood:
Did you flash preloader only? If so, you should try to flash other bits of firmware we have put up and see what happens (without flashing preloader again)
[Android General] PhillMc:
Just flashed MBR, EBR1, boot.img, recovery.img, and secro.img -- so far I'm getting nothing...
[Android General] smartmanvartan:
Bootloader.. Lk.bin... That's the next boot step.
[Android General] PhillMc:
Someone get me whatever they can, flashable or not -- I'm on a roll, lol. :D
[Android General] NepoRood:
Ok, someone needs to do a "dd" on UBOOT, that'll get us the lk.bin file. I think that, and "system.img" is all you're lacking at this point :fingers-crossed:

EDIT:

if dd doesn't work, do a readback:

Name: lk.bin

Start: 0x1d20000

Size: 0x60000

I figure it will need to be "trimmed" as well.
[Android General] PhillMc:
Just tried flashing x.9.x lk.bin -- flashed fine, but no go.

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[MENTION=4666511]smartmanvartan[/MENTION] -- just tried the possibly mislabeled firmware; flashed fine, but no go.
[Android General] NepoRood:
Just out of curiosity, where did that x.9.x lk.bin come from?
[Android General] smartmanvartan:
The .9 versions that have a suffix of 3 and up are actually an other branch of development. Frggin rca... -_-
[Android General] foxpossy:
i luv u im soooo happy i had a year with a broken tablet and now i fixed it !!!!!!!!!!!!!!!!!
[Android General] darkensx:
i have the dd file output on uboot but it is 4GB it takes way too long to upload 9+ Hrs someone else needs to do that it will take too long.
[Android General] NepoRood:
Readback with the SP Flash Tool would be better, my uboot is not even 512Kb, you did something wrong somewhere with "dd"
[Android General] PhillMc:
Not necessarily; dd reads and outputs every byte.

Alternatively, and assuming gzip is installed, you could use " cat /device/path | gzip -9c > image.bin.gz " -- if gzip isn't installed, no doubt some compression utility is; simply substitute "gzip -9c" with the appropriate commands.

Granted, this technique is a lot slower, but it almost always works; especially in cases where dd has trouble -- this is my preferred technique when backing up HDD's ( for example, just finished imaging a 500 GB partition and the resulting file is ~20 GB )
[Android General] NepoRood:
It's not a "simple" process, but, this will get a complete rom/firmware from a x.10.x device. If [MENTION=3679990]darkensx[/MENTION] (or anyone) will do a full readback, and follow that guide, you should have a working firmware :good:
[Android General] darkensx:
well i wil once i get new HDD's for my pc as they crapped the bed on me ill have to wait till june before i can resume work on this i do apologize in any inconvenience this has caused.
[Android General] NepoRood:
Can't fault you too much, lol, you're the only one with a working tablet :D
[Android General] Sargeue:
Windows 10?

Hi all, I have this tablet and it is rooted. My question is has anyone made a mod for it yet and I saw this tablet has Windows 10, but it may be a different model. Can Windows 10 be implemented on this tablet or can't the processor handle it. I was also thinking of putting Ubuntu on it, but can't find info on how to. Thanks for any answers!
[Android General] smartmanvartan:
Hi Sargueu, when you say this tablet had Windows 10 you mean the cambio one like this one?http://www.walmart.com/ip/RCA-10.1-2in1-Tablet-32GB-Quad-Core-Windows-8.1/44656210

The cambio tablets use the same casing but the board and processor are completely different. So Windows is not possible for us.. However you can run Linux on it.. Kinda. . you can run ubuntu in virtual environment.
[Android General] willcall:
Stuck in fastboot. How do I get out. Cant turn off the tablet or reboot. RCT6303W87 DK
[Android General] smartmanvartan:
Just hit the reset button on the back
[Android General] willcall:
Thanks. I feel like the worlds biggest dumbass. You guys have done a terrific job with this thread.
[Android General] willcall:
TWRP for v x.12.x

Is there a TWRP for vx.12.x yet?

Thanks
[Android General] NepoRood:
There is, actually, I have it installed on my Viking, it's just not a conventional build, lol

I used the "watch" theme to build it because the touch points are all crammed into one corner of the screen. I should really look into trying to fix that, I need something to work on...
[Android General] willcall:
That is well beyond my skill set. I can follow directions and use something that has already been developed but programming is beyond me.
[Android General] geritch:
Hey. Show you how to install tablet Remix os
[Android General] darkensx:
sorry guys i have not forgotten you all serious issues have come up with my desktop pc but i will see if i can get those dumps through my laptop.

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Ubuntu touch would be nice when they decide to release it and mainstream the dang os :eek: dev preview is the most useless thing ive seen Ubuntu put out.

but any Android device can run linux in VM but it is not worth it IMHO.
[Android General] nannycrick:
Hi Smartmanvartan..... it's me again....

Bought another rct6203 at the flea market for $10. It's bootlooping! LOL...here I go again!!
[Android General] NepoRood:
At least you're ready for it this time :good:
[Android General] smartmanvartan:
Lol. Should be pretty easy for you, just flash that firmware you had last time. If it doesn't work, let me know and I'll find some other versions. :)
[Android General] nannycrick:
Yep! Everything still works! Fixed the looping with that Surf1000 firmware! Now, it's ready for sale. Only took 10 minutes! Sweet!

I'm now running a Lenovo Tab2 A8-50F ! The Windows 10 drivers for SPFT posted on the A10-70F xda forum work beautifully for everything.....SPFT, MTK Droid Tools, Easy Magic TWRP Installer, etc....

Thanks again for all the lessons learned!
[Android General] joe7dust:
Any news on rom development? I know you posted this over 4 months ago so you might not even be working on it any more. I honestly do not see the point in doing this guide if there aren't any roms. I'm already rooted so I can just use Xposed framework for the customization I want like battery percentage in status bar and 5way reboot menu. The only real benefit I see in doing this is having TWRP so I can make backups.

edit: I don't know why, but I decided to give it a go anyway. I can't even get the drivers to install. Windows 7 automatically does something and then I end up with an "unknown device" in USB controllers that refuses to let me update the drivers for citing "best driver already installed". I tried a few tricks using gpedit.msc and regedit to disable the automatic driver stuff but that didn't help. Is the tablet supposed to load the battery charging screen every time we plug it in while unpowered? I ask because this state on the tablet doesn't seem to give any special permissions. Usually when flashing a new device it must first be put in "download mode" I thought.... BTW, does it matter which scatter file is used? I noticed the one you bundled in the latest FW is a different size than the one linked in the post where you instruct us to use it. (one is 9kb, other 10kb)

edit2: I just noticed the built in system recovery has an option to "apply update from sdcard", would it maybe be easier to load like this in my case? I have no idea how to do that, but this and a few other options seem to present themselves as possible workarounds.

edit3: Just noticed this back on page 20 and it gave me an idea...

I have adb wireless (root) working and I'm connected. I still have to figure out what to type, but it looks like there is hope!

edit4: **** it, I guess I am done for the night. Spending several hours on something I didn't really need in the first place was quite silly of me! About the adb wireless app, I don't think it will help in my case since the only step that seems to require it also requires the tablet to be in the fastboot mode which means no apps/wifi are running at that time anyway. If it is possible to have full internal storage modification over adb wireless, then I would think I could just copy over all the files needed manually, but in my past experience there are usually some partitions that can't be written to using windows or even a linux VM on top of windows.

edit5: Well I couldn't resist just trying one more thing... Tried to force manually the drivers selecting "have disk" but I had to uncheck the 'show compatible hardware' box to get anything other than a single Unknown entry. This brought up a bunch of vendors, but without anything that says Google/Android/RCA I only tried "USB composite device" and "generic hub" both of which failed to load. I'm not exactly sure what category it goes in. I definitely have tried all 4 .inf files that came in the MTK driver pack, I know that much... both with selecting a device/vendor and without.
[Android General] joe7dust:
gg dead thread?
[Android General] NepoRood:
You've wrote so much, I'm confused on what you are trying to do lol. Not having wired adb is most assuredly a setback with this tablet, but that's why we have the Flash Tool. The drivers can be a real hassle to install, you're not the only one that's had trouble.

Just re-read the OP again, pay close attention to what you are doing, and make sure to do everything properly.

Yes, scatter file matters, it needs to be one compatible with your device. Don't use a x.9.x scatter on a x.12.x tablet and vice versa.

Also, if you Google:

disable driver signature verification Windows 7

You can use the auto installer for the vcomm drivers, not sure if there's a link in the OP, but I can provide one if needed

Regards,

Nepo
[Android General] joe7dust:
It is literally right there. I'm sorry but I cbfa to do a TL:DR on it right meow.
[Android General] smartmanvartan:
I have no idea what's going on here....
[Android General] NepoRood:
I was hoping it was some kind of "typo" or whatever, if it's code, it's lost on me.

I get the meow reference (if that's what it is lol)
[Android General] e923:
Windows 7 vista ...I got it must have did something wrong, but after unlocking the bootloader do it supposed to reboot or sit on the select boot mode screen with the volume up & down selection or do I push the reset button......cmd screen says it finished
[Android General] e923:
Figured it out , reading is fundamental... Lol ?

On to recovery ???
[Android General] kivar2016:
Any plans to create a similar zip package for the

Are there plans to create a similar zip package for the RCA Viking Pro (RCT6303W87DK)?
[Android General] smartmanvartan:
To which zip package are you referring to? Everything is in the instructions. I keep them separate.
[Android General] NepoRood:
The firmware I zipped for the Maven already has the patched lk.bin file and the CWM recovery in it, along with all original files (no need for separate downloads).

I think that's what he's talking about :confused:
[Android General] kivar2016:
Yeah, I think a single-source zip package like yours for the viking pro is really needed, since I'm running into problems downloading the various files, esepecially the SP Flash tools zip archives, for some reason, the download of these files just hangs at 99% complete whenever I try to download them. Must be some kind of server problem on their end.
[Android General] smartmanvartan:
I'm more inclined to have it as separate downloads. I feel like some people might already have the drivers from a previous mtk device as well as sp flash tools. And some people might want different versions of firmware or a new version may pop up... To each their own I guess...

I can appreciate how that's annoying.. sorry about that, i mirrored a new link for the sp flash tools in the firmware section for you. Should be all good now :)
[Android General] Jacube22:
TESTING

testing new .9 firmware now..

Will report results shortly.

Ladies and Gentlemen, Welcome to your new Venturer.

Another thing of note: They didn't bother to include the Walmart apps, WPS office, or the user manual in this one.

No. I won't. only 8 gb of storage in this version
[Android General] smartmanvartan:
You mean the internal SD card and app storage are separate?
[Android General] Jacube22:
No, I mean that there are only 8 GB of internal storage. 1.8 GB are available to the user.
[Android General] smartmanvartan:
And normally for you guys what is it? It's just that on my tablet there is 25gb for apps and internal storage. Shared. So you are saying that on this versiokn, it is split? Is it split on the v32?
[Android General] Jacube22:
If I understood you correctly, no, the storage is shared just like on yours. The normal version for me also has 25gb for apps and internal storage, just like yours. This firmware has only 1.8gb for apps and internal storage.
[Android General] smartmanvartan:
Ok I understand. When you flashed it, you flashed the whole thing or just system/user/boot/cache? I guess the firmware is for a version of the tablet that has 16gb instead of 32gb... There are more differences in the .9 versions...
[Android General] Yash32291:
xposed framework

Hi, I have rooted the tablet using kingroot, but I need xposed on it. Please explain me how to install xposed and update binaries. I badly need xposed because there is no other way to get multitasking on the tablet. Please help:rolleyes:
[Android General] jerryvail35:
http://downloadandroidrom.com/file/t...sdk21-arm.zip] this is all you need for exposed. and you can use flash fire from google play to flash the zip. http://xdaforums.com/show....php?t=3075433 . flash fire isnt on google play yet , so here is where to get it...
[Android General] Yash32291:
The links do not work. Could you explain step by step how to do it please?
[Android General] jerryvail35:
https://play.google.com/apps/testing/eu.chainfire.flash XposedInstaller_3.0_alpha4.apk - XDA Developers installed the apk first but didn't launch it then flashed the above zip with flashfire.. The screen will go black and it will take up to 5 mins then your tablet will reboot and go through the usual upgrading android stuff.
[Android General] nannycrick:
Is there any way you can port any of this to help us Pro II users with bricked tablets cause the update failed? I along with many others, have a 10" rct6203w46 that is completely bricked. We would LOVE to have any help or firmware, scatter, or zip that would help restore our tablets.
[Android General] smartmanvartan:
Yeah sure I would be glad to lend a hand. What kind of brick are we talking here... Can you still charge it? Can you get into recovery? If you plug it in to your computer while it's off, does it register as a device for a few seconds?