DISCONTINUED [STOCK ROM/TWRP/ROOT/OC-UV] RCA 7' Voyager (RCT6773W22) MT8127

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cbentrott

Member
Aug 12, 2015
5
0
willing to help ver 31

posted in old forum thought i should post here too,
i'm in need of help like big time
i forgot to backup nvram img and i did a full format
my motherboards says ver.05 idk if this helps or not, im on v31 if you need another tester
i've wrapped my head arounf fixing my tablet for three days now ready every single one of these posts, i can pull files and grab whatever part of the nand you need

stuck with a nvram error = 0x10, i'm sure it has to do with the ubifs and what was mentioned about the dual partions, and how the tablet will only boot once after flash. any clues

i was almost thinking of going to walmart and switching boards
 

synius

Senior Member
Dec 17, 2014
223
61
Cornwall, Ontario
Contact rca they will replace tablet if u describe software defect
Other then that don't mess these up
Nvram error is a WiFi mac address identifier that's missing
The scatter is technically wrong at the same time is close to being correct
It flashes properly without the readonly attribute, but system writes to another partition every boot which causes the device to fail after restart

Honestly. It is possible I just don't have time

Sent from my RCT6773W22 using XDA Free mobile app
 

cbentrott

Member
Aug 12, 2015
5
0
if i could some how write the 3 ubi partitions would it work, one for system, cache and userdata to match the normal ones created by the scatter.
the ubi partitions are not created through the scatter are they,
i watched this video about a china tab factory and she just had a cup of microsd cards, that were pre loaded with the rom or something, she was flashing like thirty at a time.
on the tablet, green progress bar across the screen. which brings me to my point, who owns rca now, how would one accuire original roms from them, have you ask. very intrested in how the the partitions sytem works here, my old phone was ext4 and i've read a small bit on yaffs2.
really just lost

even thought about trying to build android from source cyanogenmod or ubuntu touch, but i have very little in dev knowledge:(

ps my question is broke sorry
 

cbentrott

Member
Aug 12, 2015
5
0
could you do one thing for me i will forever be greatful, can you reupload a fullbackup of version 31 firmware
rca support just sent me to the usual default page, had a 2 hour conversation with tech support on how to accuire that file or some knowledge on partitioning,
the support center is all a bunch of mindless idiots :(

are you super over taken by life right now, i want to help further rom developement on this device can you make my hopes come true synius
a solution to the partition problems, ive been ready on ubi utilities for ubuntu
 

synius

Senior Member
Dec 17, 2014
223
61
Cornwall, Ontario
I dunno have computer HDD failure fixing it but I dunno what files I have. Might only have what's on my media fire.. Patience life sux right now
I will post what I have once my desktop is operating, all my work was crupted when my HDD bit the dust
My new tablet is a v39-2.8.0

Sent from my RCT6773W22 using XDA Free mobile app
 
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Jacob030

Senior Member
Nov 20, 2010
111
34
OnePlus 7 Pro
Does anyone know how to root a Voyager RCT6773W22b. I tried Kingo and it just reboots. Here a screen of the about page.

3457eb00d09c0055a7adc060ba7f70c6.jpg
 
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mikillo

New member
Aug 31, 2015
2
0
Help with a Voyager RCT6773W22B ANDRIOD 5.0

Hi , i have a Voyager RCT6773W22B ANDRIOD 5.0, but i can't find the ROM lollipop 5.0, i have been googling the build RCT6773W22B-ANDRIOD5.0-V15-V1.8.22 but i haven't found anything. if you have a backup of your ROM or you can do it or someone on the forum have the ROM, please, share it with me, please, my tablet is brick and i don't want to lose my money in vain.
Thanks so much beforehand , mikillo since Cuba. :crying::confused:
 
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vampirefo

Senior Member
Apr 3, 2010
3,243
1,640
Is this tablet ext4 file system?
The 5.0 version?

Sent from my BLU STUDIO 5.0 C using Tapatalk
 

mike9976

Senior Member
Nov 14, 2014
101
10
Cave city ky
RCA sent my replacement took screen shots running xposed with phone ui
 

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vampirefo

Senior Member
Apr 3, 2010
3,243
1,640
i don't know, how i can find it, but in this moment the tablet is bricked, remember

My wife picked one up it's same as older versions, not ext4, too bad might have made a good tablet.

Filesystem Size Used Available Use% Mounted on
tmpfs 491.7M 56.0K 491.6M 0% /dev
none 491.7M 12.0K 491.7M 0% /sys/fs/cgroup
tmpfs 491.7M 0 491.7M 0% /mnt/asec
tmpfs 491.7M 0 491.7M 0% /mnt/obb
tmpfs 491.7M 0 491.7M 0% /mnt/secure
tmpfs 491.7M 0 491.7M 0% /mnt/asec
tmpfs 491.7M 0 491.7M 0% /mnt/obb
tmpfs 491.7M 0 491.7M 0% /storage/emulated
/dev/ubi0_0 2.3G 1.0G 1.2G 45% /system
/dev/ubi1_0 3.8G 534.1M 3.2G 14% /data
/dev/ubi2_0 517.3M 92.0K 516.7M 0% /cache
 

!H4CK3R!

New member
Oct 11, 2015
2
0
Please im so sorry but i need help cuz i am fr trying to get my rca tab to work. I have the rom file, i know my correct verson,but when i press the download button and then connect my device,my computer (running win 8.1) says problem with usb. And i try to install the preloader drivers but i dont exactlt know how. PLease i wanna fix my tab any help would be appricieated. Plus my tablet is stuck at the power on screen, sorta like a bootloop but it gets stuck on the first rca dog screen.Please reply and help me.
 

leetree2001

Senior Member
Apr 8, 2013
67
19
houston
Please im so sorry but i need help cuz i am fr trying to get my rca tab to work. I have the rom file, i know my correct verson,but when i press the download button and then connect my device,my computer (running win 8.1) says problem with usb. And i try to install the preloader drivers but i dont exactlt know how. PLease i wanna fix my tab any help would be appricieated. Plus my tablet is stuck at the power on screen, sorta like a bootloop but it gets stuck on the first rca dog screen.Please reply and help me.

DISCONTINUED, they stopped working on this, unfortunately, I hope you didn't use any of the files on here.they were never completed. They will leave you with a brick,possibly worse than you started ,maybe!!!!
 

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  • 9
    DISCONTINUED - Left for research and archive purposes.



    After much hardwork @codelover and I are pleased to release both stock rom as well as TWRP 2.8.6.0
    for the 2 known variants v31 and v38. Please make sure you download and flash for your specific variant. Check faq if you do not know which variant you have.

    REQUIRED FOR BOTH VARIANTS:
    Windows XP/Vista/7/8/8.1/10TP 32bit or 64bit
    SPFT (Windows Version) “linux version coming soon”
    Correct Scatter File
    Preloader Drivers (if you do not know how to install manually go here)
    ADB
    A Brain

    Usage:
    For flashing either pre-rooted Rom and/or TWRP you will need spft+scatter file. It is imperative that you make sure that if you got a v31 you only uses v31 files not v38. Same for the v38 users only use v38 files. You have been warned.

    Flashing Rom:
    Make sure
    Run the file flash_tool.exe
    Click on scatter-loading and select your MT8127_Android_scatter_RCA_Vx.txt file
    Make sure all listed files are checked and if any isn't double click on it and select the appropriate file
    Leave settings as Download Only “if working tab Format All + Download "if wont boot' then hit the Download button
    Make sure your tablet is completely switched off then connect it to your PC and the flashing process will commence immediately.
    Once it's done, you'll see the tick sign below and that's all. Reboot your device and setup your device afresh.
    BjPipEM.png


    Flashing TWRP:
    Same as above except only check mark recovery and select “recovery_twrp2860_vXX.img” and nothing else then proceed.

    How to ROOT:
    *With stock recovery: Kingo

    *With TWRP: SuperSu

    DOWNLOADS:

    (V31.0 USERS ONLY)
    Pre-Rooted Stock ROM (scatter file included in zip and attached below)
    TWRP 2.8.6.0 (scatter file included in zip and attached below)
    EDIT: TOUCH FOR v31 TWRP IS MISALIGNED FIX IN PROGRESS. LINK REMOVED UNTIL THEN


    (V38-V1.8.0 USERS ONLY)
    Pre-Rooted Stock ROM (scatter file included in zip and attached below) (Currently being fixed sorry for the issues)
    TWRP 2.8.6.0 (scatter file included in zip and attached below) (Currently being fixed sorry for the issues)


    NOTICE:
    Please keep thread clean and DO NOT ask things others have asked already as you will be ignored. If you do have a honest question and have a working knowledge of android. I would be glad to assist you the best I can. If you are noob and messed something up DO NOT ask for help. Meaning basics of knowing adb,logcat, installing drivers, and so forth. Sorry if you are a noob but please try to understand that things we may ask of your will require this and becomes too much of a slow down if we have to guide you thur everything.

    CREDITS:
    http://twrp.me/@Dees_Troy & his team mates, for TWRP Recovery
    @codelover - For being an awesome programmer, dev and person!
    @TripFX - For being an awesome Tester, v38 rom dump and Dev Machine Hoster
    @synius - For v31 rom dump and tester
    @nathanski - Tester
    @acejay3200 – Being a nice lab rat with knowing i may not be able to make a recovery for you or even brick your working device and not being rude..

    Others I may have missed
    6
    Guys, thanks for sharing the ROM dump, we are still analyzing the files, until then V38 users please don't use/flash any of the files.

    Meanwhile, can someone help me to test new twrp recovery for V31?
    Hopefully the touch works, otherwise someone will have run Magic TWRP to get correct configuration for me. (We will provide info later if needed)

    Thanks
    4
    Faq:

    Question: How do I know which variant I have?
    Ansere:
    Method #1
    From a booted android, goto Settings > About > Build number
    You should see something like this.
    RCT6773W22-ANDROID4.4.2-3101-V38-V1.8.0

    Method #2 (Better & more accurate)
    For this your device must be rooted & already have USB Debugging Mode enabled.
    Make sure adb.exe has been installed on your system (computer).
    Execute the following adb command:

    Code:
                    adb shell
    	        su
                    cat /proc/cmdline
    MVeXrPS.png

    then search for ‘lcm’ text in the output:
    If lcm=cpt_clap070wp03xg_lvds < you need to use v31 files
    If lcm=1-lxjc070whm270_18a_rgb < you need to use v38 files

    Question: What if I dont remember which variant I have and can’t access adb?
    Ansere: If this is the case we will need to use SP Flash Tool to help identify your variant.
    Open SF Flash Tool, load V38 scatter and switch to ‘Read Back’ tab. Clear all then click Add,
    Click the new item & change the output file name from ROM_0 to ROM.txt,
    edit the readback address as below:
    Start Address: 0x9000000 / Length: 0x1000
    S1qYlvT.png

    Then press “Read back” button, now connect the tab while powered off.
    When it’s done, open the file with wordpad and check if you have “ANDROID” at the beginning of the file, if your answer is yes then you have V38, otherwise use V31.
    3
    I've been hard at work,
    the initial v31 release is incorrectly scattered
    Be patient with me because I'm testing it to fix my v31
    Yes it boots after flash but the tablet itself. Uses 2 system 2 cache and 2 userdata one is a regular image that gets remounted on the second system partition as ubifs this second partition gets flashed with the original system image every boot,

    because the scatter tells the device hey the ubifs is already mounted it boots once after shutdown it tries to copy the original system which is empty, so it writes the system empty and fails to boot a second time

    The nvram error is the WiFi mac address it won't cause issues but it's basically scanning itself not knowing it's itself as it's non identifiable it's fixed by 2 solutions one from earlier in this forum or the other forum,or flashing the devices original nvram.img

    I haven't givin up on development
    So bear with me
    Sent from my R800a using XDA Free mobile app
    3
    v38 is still being worked on atm.