Root SPRD spreadtrum SC9853 android 9.0 Ford c-max - Android Head-Units

hello everyone i am new member and i installed on my 2011 Ford C-max a car radio with android 9.0 i have photos with hw information but i can't upload them. I ask for your help to root my device and maybe install a better rom than the original one. Can i provide this informazioni:
CPU: Spreadtrum SC9853 (sc9853);
Vendita: Unisoc (Spreadtrum)
Clock Speed: 624 - 1872 MHz
GPU: Mali - T820MP2
Build: OPM2.171019.012
Kernel: Linux version 4.4.83 ([email protected]) (gcc version 4.9.x20150123 (prerelease) (GCC)) #640 SMP PREEMPT Tue Sep 17 10:55:58 CST 2019

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[Q] SetCPU resetting CPU frequencies

Hey I have been having problems with the SetCPU app. I have set a profile for screen on max 1026 -min 384 on demand and one for screen off 486-384. However it seems to never be at tkse frequencies. When checking the app it always changes to 1026-1026 although there is a notification stating 1026-384. Also the widget says 1026-1026. Sometimes it works sometimes it doesn't. How do I fix this?
"Board: mako
Product: du_mako
Model: Nexus 4
Device: mako
Build: du_mako-userdebug 5.1.1 LMY47V eng.nasty007.20150427.174404 test-keys
Google/du_mako/mako:5.1.1/LMY47V/nasty00704271751:userdebug/test-keys
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Brand: Google
CPU ABI: armeabi-v7a
Kernel
Linux version 3.4.0-perf-g14292f2 ([email protected]) (gcc version 4.8 (GCC) ) #1 SMP PREEMPT Sat Apr 11 14:58:38 CEST 2015"]Board: mako
Product: du_mako
Model: Nexus 4
Device: mako
Build: du_mako-userdebug 5.1.1 LMY47V eng.nasty007.20150427.174404 test-keys
Google/du_mako/mako:5.1.1/LMY47V/nasty00704271751:userdebug/test-keys
Manufacturer: LGE
Brand: Google
CPU ABI: armeabi-v7a
Kernel
Linux version 3.4.0-perf-g14292f2 ([email protected]) (gcc version 4.8 (GCC) ) #1 SMP PREEMPT Sat Apr 11 14:58:38 CEST 2015

TOPWAY TS9 Spreadtrum sp9853i_1h10_vmm headunit: ADB USB drivers/Unlocking Bootloader/Rooting

I have a link to the head unit, if anyone wants to see it.
I have spec-device listing of my unit as well.. but cant link it because I am new...
so ill paste some info...
Manufacturer SPRD
Model sp9853i_1h10_vmm
Android version 9; 10116; SDK27
CPU 8 cores; Spreadtrum SC9853; Max: 1872.0 MHz; Min: 624.0 MHz
OS DETAILS:
KERNEL: Linux version 4.4.83 ([email protected]) (gcc version 4.9.x 20150123 (prerelease) (GCC) ) #3 SMP PREEMPT Mon Mar 9 15:40:49 CST 2020
CODENAME: REL
Mainboard: sp9853i_1h10_vmm
BRAND: SPRD
CPU_ABI: x86_64
CPU_ABI2:
DEVICE: sp9853i_1h10
DISPLAY: OPM2.171019.012 release-keys
FINGERPRINT: SPRD/sp9853i_1h10_vmmTos/sp9853i_1h10:8.1.0/OPM2.171019.012/10116:user/release-keys
HARDWARE: sp9853i_1h10
ID: OPM2.171019.012
TAGS: release-keys
I love the headunit, but I want to unlock its potential and customize the background for the radio app and music player. I found the Joying Mod.apk that someone made that has the same SP9853i chip, but unfortunately it does not work. I've tried several different types of SPRD USB Drivers as well as generic ADB USB drivers. When I try to connect, I get a message saying my unit is not authorized.
Here are some screens... hopefully they work
drive.google.com/file/d/13Y0brZlMQ6Mf1Jwl_nkeiJMCYJ9eVKN-/view?usp=sharing
drive.google.com/file/d/1-1jaWGssXFQQBXG4mn6-dstq_N-RdFiL/view?usp=sharing
^ that app also will work if I can allow WRITE_ACCESS...
I realize rooting is probably a crazy tricky process. I would be happy if I could at least get ADB access, so that I could at least allow some WRITE_ACCESS to
a few apps requesting it.
bump
hi .. i got the same model..and testing firmwares on it. in case if you are able to provide yours firmware.? Thanks

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S/N: 080116040d041f0c07df0a5133504b52
CPU: ARM Cortex-A9 @1.6GHz (x4)
Memory: 1-24 MB
MCU version: MTCD_JY_V1.28_2 Mar 7 2016 13:21:57
Android version: 5.1.1
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HELP PLEASE!!! NAKAMICHI NAM5730 FIRMWARE

KERNEL: Linux version 4.9.112-perf ([email protected]) (gcc version 4.9.x 20150123 (prerelease) (GCC) ) #2 SMP PREEMPT Wed Mar 9 18:04:27 CST 2022
CODENAME: REL
Mainboard: msm8953
BRAND: Android
CPU_ABI: arm64-v8a
CPU_ABI2:
DEVICE: msm8953_64
DISPLAY: PKQ1.181105.001 test-keys
FINGERPRINT: Android/msm8953_64/msm8953_64:9/PKQ1.181105.001/android2003091617:user/test-keys
HARDWARE: qcom
ID: PKQ1.181105.001
TAGS: test-keys
Can I ask please if what ROM or FIRMWARE I CAN UPGRADE THIS? THNKS

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