Develop Bugs

Recovery

Hello hope I posted in the correct section. I have recently bought this unit:
MCU version：
MTCC-KLD6-V2.97
Aug 02 2016** 10:35:08
Android version：
5.1.1
1024*600
Core version：
3.0.101+
[email protected] #114
Wed Dec 7 10:12:30 CST 2016
Version no：
rk3188-userdebug 20122016.14:14:33
I have messed up my recovery. Can any of you help by providing a working recovery either stock out custom? Thank you in advance
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allwinner 7.1 android

I have a allwinner 7.1 t3 px3 head unit can I install a custom Rom on it and what one thanks for any help

[CLOSED] Head unit update ?

i own for a while now a MTCD Android Head Unit with the following specs:
Model: A-Media AUTO (1024x600 W)
Android: 6.0.1
MCU Version: MTCD_GS_V2.32_1 (4th March 2017)
Kernel-Version: 3.10.0 [email protected] #390 (3rd March 2017)
Build-Number: px5-userdebug 6.0.1 MXC89L user.hct.20170304.091130 test-keys
Can it be updated ?
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MOD ACTION:
Thread closed as duplicate of https://forum.xda-developers.com/android-auto/mtcd-discussion-questions-development/updated-t4104447

MTCD_HTWX_V1.75_1

Hello,
I would to know, If is it possible to update my Radio Android Version and how can I update it
MCU version
MTCD_HTWX_V1.75_1
Android Version 5.1.1
Kernel Version 3.0.101+
Build number
rk3188-userdebug 09082016
I appreciate your help

downgrade Samsung A70

hello there, can i downgrade my samsung A70 SM-A705F from android 11 to android 9 pie?
build number: A705FXXU5DUE2
to
android 9 build number: A705FXXU5ATA1
is it possible?