[Redmi 9A ROMs, Kernels, Recoveries, & Other Develo] Ivan.Adriazola:
TO INSTALL ORANGE FOX (this I think was fine I mostly followed [1]):

Unlocked bootloader from developer tools (I discovered later this apparently does nothing)

Downloaded SDK platform-tools [2] and extracted it on "C:/adb/platform-tools"

Restarted my phone into fastboot (power + vol dwn)

Installed phone drivers using this video [3]

Checked I have a A-only device with "adb shell getprop ro.boot.slot_suffix"

Nothing showed up, so my device is A-only

Downloaded this Orange Fox Recovery .zip [4]

Extracted the Recovery.img on the zip to "C:/adb/platform-tools"

Attempted to do it but failed [5]

On windows oppened a CMD and went to "C:/adb/platform-tools"

ran this command "fastboot flash recovery recovery.img"

not allowed

I unlocked bootloader using miunlcok tool 6.5.406.31 [6], had to wait like 4 days (less than normal, the phone had issues receiving SMS so I had to change the recovery phone)

Tried again.

On windows oppened a CMD and went to "C:/adb/platform-tools"

ran this command "fastboot flash recovery recovery.img"

went into Orange fox recovery by using power+vol up

All locked good, so I sent the Orange fox .zip from my computer to my phone and flashed it

again it all locked good.

TO INSTALL ARROW OS

I formated using Orange fox

I put the Global Miui found on this thread [7] on an sd card

put the sd card in my phone, went into orange fox recovery

formated the phone (mistakingly went into the system at this point so the phone still worked after this)

went into recovery again, formated again, taped on the Global MIUI [7]

slid the slider

took like 5 minutes (longer than usual)

it was suposed to reboot after this, but did not (I think)

the phone doesnt turn on anymore and was in the state described in my previus comment.

"the phone just vibrates after a while holding the power button and the screen doesnt even turn on, it isnt recognized by the computer (wich kinda kills all hope for me), and if I try to boot into recovery the same happens but the screen turns on for a fraction of a second whith the redmi logo then turn off again, It is not recognized by the computer in this state either."

POSIBLE SOLUTION:

stalking Applewubs I discovered that he had the same issue and that apparently I can fix it by the method said russian used, he recomended a video on spanish (I speak both spanish and english fluently) [8], again, I havent watched it yet, im taking it slow, Im more like searching stuff to try for now so I can do a lot of things the day I decide to go for it, but thank you for trying to help.

[1]

Installing OrangeFox Recovery

wiki.orangefox.tech

[2]

SDK Platform Tools release notes | Android Studio | Android Developers

Android SDK Platform-Tools is a component for the Android SDK.

developer.android.com

[3]

[4]

Xiaomi Redmi 9A / 9C / 9i / 9AT / 9A Sport / 9 / 9 Activ / POCO C3 (garden) build releases | OrangeFox Recovery Downloads

Orangefox recovery for Xiaomi Redmi 9A / 9C / 9i / 9AT / 9A Sport / 9 / 9 Activ / POCO C3 (garden)

orangefox.download

[5]

https://xdaforums.com/t/help-me-i-w...d-remote-not-allowed-in-locked-state.4293325/

[6]

Apply for permissions to unlock Mi devices

en.miui.com

[7]

https://bigota.d.miui.com/V12.0.10.0.QCDMIXM/dandelion_global_images_V12.0.10.0.QCDMIXM_20210101.0000.00_10.0_global_f2a9e14284.tgz

[8]