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[HELP MOD] BCM2157 Brava ROM Chinese smartphone

I have a Flash ROM that given with full software in the folder (given from service center) but i don't know the function of all this files.
The tools for flashing is sprocomm tool and i always success using it for flashing stock ROM.
I believe it is using same chipset with ZTE Racer II BCM2157 but I can't use any CWM Recovery that stable in ZTE Racer II for my phone.
Maybe the partition is not same or something else but im not sure (still noob).
I tried using recovery manager or flashing it using sprocomm tool. It is success flashing but bootloop.
Software bundle + Firmware (ROM) : http://www.mediafire.com/download/ym6yrsf2vxw94vz/NX-A850-ROOT-DeAngeLNet-Style-V1.0.7z
System.img that i have mod : http://www.mediafire.com/download/sf585d2olq8jl61/De_Angel_Net_V3.0.7z
Tool i use to flash :
Sprocomm : http://www.mediafire.com/download/d298ij0wbqtp4ew/sprocomm.7z
Visual C++ 2008 : http://www.microsoft.com/en-us/download/details.aspx?id=29
Broadcom USB driver : http://www.mediafire.com/download/9qrlkdagsh2ctcb/Broadcom_USB_Driver_1_8_6_27.7z
Anybody can help to mod this rom that i shared, so i can use CWM and make an CM7 custom ROM?
Or maybe give a guide how to use all this software so i can mod the ROM?
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[Q] Problems installing ROMs on Nexus 7

I'm getting some troubling errors when going to install a Rom on my nexus 7. And Yes its rooted. II boot into recovery using TWRP do the factory reset. When I try and flash I get an error saying "Error executing updater binary in zip"Then "error flashing zip" I Have tried multiple ROMs with the same error, same error when tryin the sony sony bravia engine 2 or 3. The Odd thing Is when I flash a gapps either 4.4.4 or 4.4.3 flashes just fine. I have experience rooting and flashing Roms onto multiple phones so Im not just a newb. Any Help would be tight!

Took a pic of screen
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first section was done trying to use Rom Manager Pro
2nd part is going to Recovery
Any idea guys?
Im running 4.4.3

ADB Maybe
If anyone else is having this problem. After some research I found that I may have to flash it using adb....Going try flashing CM11 let you know how it goes

CM11
Well was able to flash cm11 with TWRP....so idk what the deal is.....explanation would be awesome

Help LG FLASH TOOL

UPDATE UPDATE UPDATE !
already solved it. it seems the lg flash tool threads and such found on this forum
are either outdated or there's missing files.
since there are only two things i did and it worked.
---- dll file and driver ----
mods can either delete or close this thread now.
Good day everyone
I would like to ask for a help due to a problem with the LG Flash Tool.
which i downloaded here . https://forum.xda-developers.com/showthread.php?t=2797190
the problem is in the image attached. >>>>>> imgur.com/Kx5yepW
im running win10 64bit.
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always an error when reading phone information
also my settings on flash tool
cdma
cs_emergency
bello d335 stock rom kdz
---------
tried to flash my bello due to a problem after hard reset
>app store pop up says it is not installed
>storage space is running out when there's 3.70gb space left and it just finished a hard reset.
>can't install anything even from outside sources
Thank you in advance

UPGRADE TABLET from 4.2.2 to any - Installation aborted when i try to install any image

Hey Guys,
Iam new to Upgrade any Android Devices. I had became a Tablet which i want to use. This tablet is on ver 4.2.2 which is useless for the newest Apps or my App which i want to Program. I know i can program an app which works on it but i want do more with it. So i need a Android vers 6/7/8. I try to rooted it but it was already. Then i search for a Image which i can use. And then i try to install it with "apply update form ADB" and then comes this error. I try also apply from external storage.
My Tablet is from a No-Name company so i try to find any which i can use. I try to use LineageOS but it didnt work. Everytime when i try to use an Image it comes Installation aborted.
My Tablet Name : FX2 PAD10 AW
in the Recovery stand : SDK: MID-A20-Android4.2-V2.Opatch1
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So My Questions are:
1. How i know which image can i use?
2. Why comes "Installation aborted"?
And Maybe will be helpful if any can write a short tutorial or post a Good video tutorial.

Help me get boot.img for Sony Xperia Hello

Hi!
I would post this in the Sony subforum, but there is no section for Xperia Hello, so here I am...
Recently I got my hands on a Sony Xperia Hello, which is a weird robot which basically consists of an android phone with some peripherals bolted on top. It's running android 8.0. I managed to get the bootloader unlocked (with the Sony developer site), but I am now trying to get Magisk onto it and get root access. The reason I want root is because I would like to basically control the hardware parts of the robot through my own stuff - currently this is limited to a Sony app.
I've managed to download the stock firmware using XperiFirm and tried following this tutorial: https://www.droidwin.com/extract-sony-boot-sin-get-stock-boot-img-file/
Problem is that tutorial mentions using boot-xxx.sin file, but there is no file with a similar file name anywhere. This is the list of files in the extracted FW:
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I've also found a tutorial saying to unsin the kernel.sin file using flashtool and then rename the extracted elf file to boot.img. But if I try to then boot this (using fastboot boot) it just throws "remote: Dtb not found" error.
So, what am I doing wrong/missing?