You can root the phone without a PC by using patched boot.img and patched vbmeta.img (for Exynos 850) from phone1 to phone2

Preparation
1. Download the exact firmware (including upgrade date) for your device from https://samfrew.com or https://www.samfirmware.net/ or https://www.full-repair-firmware.com/search?q=A20 or
https://samfw.com/
2. Download patched magisk
https://t.iss.one/a127f_res/4
For Android 12 use this one
https://t.iss.one/a127f_res/191
3. Use zarchiver to extract the ap section from the firmware.
4. Use magisk to patch the ap section.(install, select file to patch)
5. Unlock the bootloader.
https://t.iss.one/physwizz2/181

1. Install this termux on phone1
2. Setup storage

termux-setup-storage

3. Install this Heimdall Magisk module or the Heimdoo app on phone1
Or install chroot Linux on termux and then install heimdall
4. Copy files for flashing to downloads folder of phone1
5. Connect USB otg cable to phone1
6. Connect phone2 to the USB otg cable using a normal cable.
7. Boot phone2 into download mode
8. On termux navigate to downloads folder. Or use Heimdoo app
9. Type
su

heimdall flash --BOOT boot.img --VBMETA vbmeta.img --verbose


@physwizz

PHYSWIZZ STUFF

Guides
https://t.iss.one/physwizz2/242

Kernels Exynos
https://t.iss.one/physwizz2/240

Kernels Mediatek
https://t.iss.one/physwizz2/545

Kernels Snapdragon
https://t.iss.one/physwizz2/593

Kernels AOSP
https://t.iss.one/physwizz2/648

ROMs & Mods
https://t.iss.one/physwizz2/243

Kernel Building
https://t.iss.one/physwizz2/241

Discussion Group
https://t.iss.one/physwizz3

A12s & m12 resources channel
https://t.iss.one/a127f_res

A127f & M127f development
https://t.iss.one/a12schat


My list of things to do
https://t.iss.one/physwizz2/486


@physwizz
Time Zone: GMT +10

PHYSWIZZ STUFF

Guides
https://t.iss.one/physwizz2/242

Kernels Exynos
https://t.iss.one/physwizz2/240

Kernels Mediatek
https://t.iss.one/physwizz2/545

Kernels Snapdragon
https://t.iss.one/physwizz2/593

Kernels AOSP
https://t.iss.one/physwizz2/648

ROMs & Mods
https://t.iss.one/physwizz2/243

Kernel Building
https://t.iss.one/physwizz2/241

Discussion Group
https://t.iss.one/physwizz3

A12s & m12 resources channel
https://t.iss.one/a127f_res

A127f & M127f development
https://t.iss.one/a12schat


My list of things to do
https://t.iss.one/physwizz2/486


@physwizz
Time Zone: GMT +10

physwizz A507 R kernel version 3.3
SM-A507FN u5 Android 11

For OneUI 3.1
( also works for GSIs)

Samsung securities disabled
More CPU governors
Conservative, On-demand, Userspace, powersave, performance, energy_step, shedutil
Optimised for performance

CPU:
Big 936 MHz - 2314MHz
Little  403MHz - 2054MHz
lz4 default compression added to zram

Bugs:

Flash img from twrp for non-root

Or compress to tar and patch with magisk 26.3 for root

Installation
Install image file from TWRP
https://t.iss.one/physwizz2/454


Kernel
https://github.com/physwizz?tab=repositories

@physwizz

J610fn
Qualcomm MSM9817 Snapdragon 425

J6+ kernel for testing.

Android 10 Q
For OneUI 2.0 and GSIs

Installation
Install image file from TWRP
https://t.iss.one/physwizz2/454


Kernel
https://github.com/physwizz?tab=repositories

@physwizz

PHYSWIZZ STUFF

Guides
https://t.iss.one/physwizz2/242

Kernels Exynos
https://t.iss.one/physwizz2/240

Kernels Mediatek
https://t.iss.one/physwizz2/545

Kernels Snapdragon
https://t.iss.one/physwizz2/593

Kernels AOSP
https://t.iss.one/physwizz2/648

ROMs & Mods
https://t.iss.one/physwizz2/243

Kernel Building
https://t.iss.one/physwizz2/241

Discussion Group
https://t.iss.one/physwizz3

A12s & m12 resources channel
https://t.iss.one/a127f_res

A127f & M127f development
https://t.iss.one/a12schat


My list of things to do
https://t.iss.one/physwizz2/486


@physwizz
Time Zone: GMT +10

PHYSWIZZ STUFF

Guides
https://t.iss.one/physwizz2/242

Kernels Exynos
https://t.iss.one/physwizz2/240

Kernels Mediatek
https://t.iss.one/physwizz2/545

Kernels Snapdragon
https://t.iss.one/physwizz2/593

Kernels AOSP
https://t.iss.one/physwizz2/648

ROMs & Mods
https://t.iss.one/physwizz2/243

Kernel Building
https://t.iss.one/physwizz2/241

Discussion Group
https://t.iss.one/physwizz3

A12s & m12 resources channel
https://t.iss.one/a127f_res

A127f & M127f development
https://t.iss.one/a12schat


My list of things to do
https://t.iss.one/physwizz2/486


@physwizz
Time Zone: GMT +10

physwizz E625
version 1.1
For F62 Android 13 only

For OneUI 5
( also works for GSIs)

More CPU governors
Userspace, powersave, performance, shedutil
Optimised for performance
Underclocked for battery
little 182 - 1950
big 377 - 2400
prime 350 - 3016
lz4 as default in zram



Bugs
?

Installation
https://t.iss.one/physwizz2/454

Kernel source code
https://github.com/physwizz?tab=repositories

@physwizz

physwizz E625
version 2
For F62 Android 13 only

For OneUI 5
( also works for wizzROM, GSIs and M҉4ƦV3L OS )

More CPU governors
Userspace, powersave, performance, shedutil
Optimised for performance
Underclocked for battery
little 182 - 1950
big 377 - 2400
prime 350 - 3016
lz4 as default in zram

Changelog
Compiled with different gcc toolchain

Bugs
?

Installation
https://t.iss.one/physwizz2/454

Kernel source code
https://github.com/physwizz?tab=repositories

@physwizz

PHYSWIZZ STUFF

Guides
https://t.iss.one/physwizz2/242

Kernels Exynos
https://t.iss.one/physwizz2/240

Kernels Mediatek
https://t.iss.one/physwizz2/545

Kernels Snapdragon
https://t.iss.one/physwizz2/593

Kernels AOSP
https://t.iss.one/physwizz2/648

ROMs & Mods
https://t.iss.one/physwizz2/243

Kernel Building
https://t.iss.one/physwizz2/241

Discussion Group
https://t.iss.one/physwizz3

A12s & m12 resources channel
https://t.iss.one/a127f_res

A127f & M127f development
https://t.iss.one/a12schat


My list of things to do
https://t.iss.one/physwizz2/486


@physwizz
Time Zone: GMT +10

physwizz M625

For M62 Android 13 only
Boots on binary 7

For OneUI 5
( also works for wizzROM, GSIs and M҉4ƦV3L OS )

More CPU governors
Userspace, powersave, performance, shedutil
Optimised for performance
Underclocked for battery
little 182 - 1950
big 377 - 2400
prime 350 - 3016
lz4 as default in zram


Bugs
?

Installation
https://t.iss.one/physwizz2/454

Kernel source code
https://github.com/physwizz?tab=repositories

@physwizz

TWRP for m236b
Qualcomm SM7225 Snapdragon 750G

Version 7.3
Includes patched vbmeta.img and patched boot.img
Includes multidisabler
Includes mtp enabled

Changelog
Mount system_root again

Installation Instructions
https://t.iss.one/a127f_res/142

You might need to swipe 6 times to unlock.
To fix permanently go to settings and don't allow time out.

Bugs
For touch issues use a usb mouse
https://t.iss.one/physwizz3/13170

Source Code
https://github.com/physwizz?tab=repositories

@physwizz

TWRP for f23
Qualcomm SM7225 Snapdragon 750G 

Version 4.2
Includes patched vbmeta.img and patched boot.img
Includes multidisabler
Includes mtp enabled

Changelog
Mount system_root again

Installation Instructions
https://t.iss.one/a127f_res/142

You might need to swipe 6 times to unlock.
To fix permanently go to settings and don't allow time out.

Bugs
?
For touch issues use a usb mouse
https://t.iss.one/physwizz3/13170

Source Code
https://github.com/physwizz?tab=repositories

@physwizz

A115f and A115m S kernel
Qualcomm SDM450 Snapdragon 450

For OneUI 4.1
Android 12

Installation
https://t.iss.one/physwizz2/454

Bugs
Sound

Kernel source code
https://github.com/physwizz?tab=repositories

@physwizz

PHYSWIZZ STUFF

Guides
https://t.iss.one/physwizz2/242

Kernels Exynos
https://t.iss.one/physwizz2/240

Kernels Mediatek
https://t.iss.one/physwizz2/545

Kernels Snapdragon
https://t.iss.one/physwizz2/593

Kernels AOSP
https://t.iss.one/physwizz2/648

My TWRP Recoveries
https://t.iss.one/a127f_res/238

ROMs & Mods
https://t.iss.one/physwizz2/243

Kernel Building
https://t.iss.one/physwizz2/241

Discussion Group
https://t.iss.one/physwizz3

A12s & m12 resources channel
https://t.iss.one/a127f_res

A127f & M127f development
https://t.iss.one/a12schat


My list of things to do
https://t.iss.one/physwizz2/486


@physwizz
Time Zone: GMT +10

Installing boot.img using a second phone.

You can install a new kernel without a PC by using patched boot.img from phone1 to phone2

Preparation
1. Download the exact firmware (including upgrade date) for your device from https://samfrew.com or https://www.samfirmware.net/ or https://www.full-repair-firmware.com/search?q=A20 or
https://samfw.com/
2. Download patched magisk
https://t.iss.one/a127f_res/4
For Android 12 use this one
https://t.iss.one/a127f_res/191
3. Use zarchiver to extract the ap section from the firmware.
4. Use magisk to patch the ap section.(install, select file to patch)
5. Unlock the bootloader.
https://t.iss.one/physwizz2/181

1. Install this termux on phone1
2. Setup storage

termux-setup-storage

3. Install this Heimdall Magisk module on phone1
(Or install chroot Linux on termux and then install heimdall)
4. Copy files for flashing to downloads folder of phone1
5. Connect USB otg cable to phone1
6. Connect phone2 to the USB otg cable using a normal cable.
7. Boot phone2 into download mode
8. On termux navigate to downloads folder.
9.
su

heimdall flash --BOOT boot.img --verbose

Mint A507 R kernel
Android 11
@TenSeventy7 for mint base

Mod by @physwizz

For OneUI 3.1
( also works for GSIs)

Samsung securities disabled
More CPU governors
Conservative, On-demand, Userspace, powersave, performance
Optimised for performance
Rooted

CPU:
Big 936 MHz - 2314MHz
Little  403MHz - 2054MHz
lz4 default compression added to zram

Bugs:
?


Installation
Install image file from TWRP
https://t.iss.one/physwizz2/454


Kernel
https://github.com/physwizz?tab=repositories

https://github.com/FreshROMs/android_kernel_samsung_exynos9610_mint/tree/mainline-15_a50sdx

@physwizz

physwizz a715f T kernel
Qualcomm SDM730 Snapdragon 730
For OneUI 5
(May also work for GSIs)

CPU boost added

Bugs:
?

Installation
https://t.iss.one/physwizz2/454

Kernel source code
https://github.com/physwizz?tab=repositories


@physwizz

physwizz a715f T kernel
Qualcomm SDM730 Snapdragon 730
For OneUI 5
(May also work for GSIs)

CPU boost added
Lz4 default compression in zram

Bugs:
?

Installation
https://t.iss.one/physwizz2/454

Kernel source code
https://github.com/physwizz?tab=repositories


@physwizz

PHYSWIZZ STUFF

Guides
https://t.iss.one/physwizz2/242

Kernels Exynos
https://t.iss.one/physwizz2/240

Kernels Mediatek
https://t.iss.one/physwizz2/545

Kernels Snapdragon
https://t.iss.one/physwizz2/593

Kernels AOSP
https://t.iss.one/physwizz2/648

My TWRP Recoveries
https://t.iss.one/a127f_res/238

ROMs & Mods
https://t.iss.one/physwizz2/243

Kernel Building
https://t.iss.one/physwizz2/241

Discussion Group
https://t.iss.one/physwizz3

A12s & m12 resources channel
https://t.iss.one/a127f_res

A127f & M127f development
https://t.iss.one/a12schat


My list of things to do
https://t.iss.one/physwizz2/486


@physwizz
Time Zone: GMT +10

A22 kernel v2 for Android 12

Extra io scheduler
Lz4 in zram

physwizz a22 kernel
Based on a225f
For OneUI 4 and for GSIs


Installation
https://t.iss.one/physwizz2/454


Kernel source
https://github.com/physwizz?tab=repositories

===========================
A12s Channel: https://t.iss.one/a127f_res
A12s group: https://t.iss.one/a12schat
Physwizz group: https://t.iss.one/physwizz3
Physwizz Channel: https://t.iss.one/physwizz2

@physwizz