To Escape the Black Screen of Death or Bootloop

To boot to RECOVERY MODE

Method 1
First connect phone to the PC for 30 minutes
Hold all 3 keys and release volume down when it buzzes.

Method 2
1. Plug in USB cable to PC
2. Hold down all 3 buttons on phone.
3. When it buzzes release volume down and plug in USB cable to phone.

Then restore your backup or install a ROM

To boot to DOWNLOAD MODE

Method 1
First connect phone to the PC for 30 minutes
Hold all 3 keys and release power when it buzzes.

Method 2
1. Plug in USB cable to PC
2. Hold down all 3 buttons on phone.
3. When it buzzes release power button and plug in USB cable to phone.
If it's really bad wait until the battery wears down and try then

Then use Odin to flash official firmware.

@physwizz

Install OneUI 2.0 or 3.1 without a PC

You only need zarchiver on your phone.

You can use this method to upgrade to R or downgrade to P

1. Download your firmware from Samfw or Samfrew. (It doesn't need to be exact but it should be for your model. I found that "files" stopped working if it wasn't the exact model.)
2. Extract the AP section
3. Extract boot.img.lz4, system.img.lz4 and vendor.img.lz4
If you find super.img.lz4 you can use CRB to extract.
https://t.me/physwizz2/289
4. Extract boot.img, system.img and vendor.img
5. Boot into TWRP and backup.
6. Wipe data, system & vendor
7. Install boot.img, system.img and vendor.img
8. Install dmverity (or multidisabler)
Reboot to recovery
9. Reboot to system

To make your new ROM run silky smooth you can

1. Install a custom kernel.
If you installed a 2.0 ROM you need a Q kernel.
If you installed a 3.1 ROM you need an R kernel.

2. Install my debloater (or my wizzROM-creator) available from @physwizz2.

I am not responsible for a bricked phone or an alien invasion.
@physwizz

Rules for Testers
1. Always make a TWRP backup before you start.
2. Give detailed feedback.
Don't just say "It didn't work"
3. Be prepared for a crash. The more you test, the more often you will crash.
4. Remember that the dev is not responsible for crashing your phone.
5. Always follow rule 1.

physwizz Debloater v3 Snapdragon
For a11 & a02s
With physwizz-2 app
Updated to fix file picker

I'm using a very unusual method.
I replace the apps with a blank apk file.


Installation

1. Boot into TWRP
2. Mount system & vendor
3. Backup system
4. Open twrp terminal
5. Type in
mount -o rw,remount /system_root
6. Install zip
7. Reboot

If you find you want to get one of the apps back just restore the system backup
Then use zarchiver to remove the apk from my Debloater.
Then reinstall it.

Debloat list: https://t.me/physwizz2/200

@physwizz

Just installed OneUI 1.1 Android 9 on my system

Just installed my exact android 11 (OneUI 3.1) firmware for my a205yn(vap) without using Odin.
Just waiting to see if I lose "files" this time.
No problem with this one.
😄

physwizz extras module

Magisk module to add extra system apps

Extras:
Battery charge limit
Clean Master
ES file explorer
HKtweaks
SimpleReboot
Root Explorer
Zarchiver

You can remove any app that you don't want by using zarchiver.
You can also add any apps that you want to systemize.

@physwizz

physwizz debloat module v2
(Added a70 changes)
With physwizz-2 app

Magisk module to debloat any Samsung phone to remove all the apps that slow down the phone

To debloat:
Install the module from Magisk and reboot.
To rebloat:
delete the module in Magisk and reboot

Debloat list https://t.me/physwizz2/200


@physwizz

Root for A205
Android 11

Flash into ap slot from Odin
For root, reboot into TWRP and install Magisk zip file

physwizz A20 (SM-a205xx)
V3.03
For OneUI Q (android 10)
or GSI (Q or R)

@physwizz

-Samsung securities disabled.
-CPU Governors: conservative, ondemand, userspace, powersave, interactive, performance.
-Interactive is default governor
-SE linux enforcing
-CPU overclocked and underclocked
-Big: 208 - 2184
-Little: 208 - 1690
-GPU: 343 - 1300
-GPU thermal & voltage control
-Extended battery life
-Works with Magisk 19.3 - 21.4
-Spectrum support enabled
- 4gb Zram

Flash magisk for root

For Zram
Go to HKtweaks- virtual memory
increase swappiness
choose lz4
increase size
turn on Zram

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

Exynos

Note: physwizz kernels work best with debloated stock
or with wizzROM
Other custom ROMs may not be supported.

Installation
https://t.me/physwizz2/454

Exynos 850
https://t.me/a127f_res/55

Exynos 7570
J5 prime
https://t.me/physwizz2/1202

Exynos 7870

Android 9 (P)
J701
https://t.me/physwizz2/582

Android 10 (Q)
J600 J6
https://t.me/physwizz2/625

Exynos 7884

Android 10 (Q)
A205
https://t.me/physwizz2/239

A202
https://t.me/physwizz2/93

A105
OC
https://t.me/physwizz2/175
Battery saver
https://t.me/physwizz2/139
Permissive
https://t.me/physwizz2/180

Android 11 (R)
A202
https://t.me/physwizz2/252

A205
https://t.me/physwizz2/261

A105
https://t.me/physwizz2/269

Exynos 7884b

Android 11 (R)
A035f v1
https://t.me/physwizz2/494

A035m
https://t.me/physwizz2/496

Exynos 7885

Android 9 (P)
A730f (a8+)
https://t.me/physwizz2/583

T510 U5
https://t.me/physwizz2/1387
Permissive
https://t.me/physwizz2/1388
Ksu
https://t.me/physwizz2/1389

Exynos 7904

Android 10 (Q)
A305
https://t.me/physwizz2/67

A405
https://t.me/physwizz2/68

M205
https://t.me/physwizz2/1002

Android 11 (R)
A405
https://t.me/physwizz2/255

A305
https://t.me/physwizz2/254

P205
https://t.me/physwizz2/1233

A307
https://t.me/physwizz2/1404

Exynos 9610

Android 11 (R)
A505
https://t.me/physwizz2/559
1846
https://t.me/physwizz2/1330
A505 permissive
https://t.me/physwizz2/1048
A505 V5
https://t.me/physwizz2/1349
A505 1742
https://t.me/physwizz2/1359

Exynos 9611

Android 11 (R)
A507fn
https://t.me/physwizz2/660

M307fn
https://t.me/physwizz2/592

M307 permissive
https://t.me/physwizz2/1005

M307f
https://t.me/physwizz2/595

Android 12 (S)
F415f
V2
https://t.me/physwizz2/517
V3
https://t.me/physwizz2/531
V3.1
https://t.me/physwizz2/534

u2
https://t.me/physwizz2/754
Permissive
https://t.me/physwizz2/1228
S3
https://t.me/physwizz2/1322
S3 v2
https://t.me/physwizz2/1431

M315f
V1.5
https://t.me/physwizz2/528
V3
https://t.me/physwizz2/530
V3.1
https://t.me/physwizz2/543

u3 v2
https://t.me/physwizz2/1122
V3
https://t.me/physwizz2/1123

U4 Enforcing
https://t.me/physwizz2/1200
U4 v2
https://t.me/physwizz2/1260
U4 permissive
https://t.me/physwizz2/1201
U4v4
https://t.me/physwizz2/1263

M215f
https://t.me/physwizz2/535
Permissive
https://t.me/physwizz2/1204

M317f
Enforcing
https://t.me/physwizz2/544
Permissive
https://t.me/physwizz2/1072
V2 permissive
https://t.me/physwizz2/1190
U3 permissive
https://t.me/physwizz2/1215
S6
https://t.me/physwizz2/1270

A515f
https://t.me/physwizz2/550

F415f
https://t.me/physwizz2/757

Android 13 (T)
A515
V1
https://t.me/physwizz2/753
U7 v3
https://t.me/physwizz2/939
A515 U8
https://t.me/physwizz2/1402

Exynos 9810
N770 (Note 10 lite)
https://t.me/physwizz2/1638
Performance
https://t.me/physwizz2/1642
Root
https://t.me/physwizz2/1643

Exynos 9820/9825

All F62/M62 Kernels
https://t.me/physwizz2/452

Note 10 (SM-N970)
https://t.me/physwizz2/1016

S10+ (G975)
https://t.me/physwizz2/1026
Root
https://t.me/physwizz2/1299

S10e
https://t.me/physwizz2/1188

INDEX: Kernel Building Guides from physwizz

Kernel Building for Beginners
https://t.me/physwizz2/997

About Me
https://t.me/physwizz2/2

Underclocking and Overclocking

I developed the underclocking code by modifying the existing overclocking code from Carlos Burero on
October 20 2020

https://github.com/physwizz/kernel_a20/commit/261a80eb4ac14dc01c82af204d90420e220f386f

https://github.com/physwizz/kernel_a20/commit/6ff437e452d14d2bff2fd01bebd4af2e26f713d0

I Developed Overclocking and Underclocking for Prime CPUs
March25 2022

https://github.com/physwizz/f62-R/commit/460f841cb12a7b9199a91e7c6a798797a0db0064

Overclocking and undeclocking values can be determined by using experimental values in all cases except oc of exynos 9611 Big cores.

@physwizz

Building with GCC
https://t.me/physwizz2/182

GITHUB for Beginners
https://t.me/physwizz2/10

Building with Clang
https://t.me/physwizz2/43

AOSP
https://t.me/physwizz2/645

Using Anykernel3
https://t.me/physwizz2/117

AIK Magisk Module
https://t.me/physwizz2/82
Update
https://t.me/physwizz2/622

Python2
https://t.me/physwizz2/424

My Build Scripts
https://t.me/physwizz2/483
https://t.me/physwizz2/590 (snapdragon)

My GitHub
https://github.com/physwizz?tab=repositories

Boot Partition Locations
https://t.me/physwizz2/610

Generic Kernel Images
https://t.me/physwizz3/9289

To support Apatch

You need modify kernel source and build  to enable
CONFIG_KALLSYMS=y
CONFIG_KALLSYMS_ALL=y

CONFIG_KALLSYMS=y
CONFIG_KALLSYMS_ALL=n
Initial support

Building kernelSU
https://t.me/physwizz2/898

Ksu next & susf
https://github.com/KernelSU-Next/KernelSU-Next

Using github actions
https://github.com/lemniskett/android-kernel-actions

Building a permissive kernel
https://t.me/physwizz2/1221

Wifi fix
https://t.me/physwizz2/1291

Kernel logs
Look at
/proc/first_kmsg
/proc/kmsg
/proc/last_kmsg

Copy logs to pc
With
adb pull /proc/last_kmsg lastkmsg.txt

Upstreaming
https://t.me/physwizz2/1572

Rksu & sufs
https://github.com/rsuntk/KernelSU?tab=readme-ov-file

@physwizz

INDEX: GUIDES from physwizz

About me
https://t.me/physwizz2/2

Apatch
https://t.me/ex850chat/64527
Repository
https://github.com/bmax121/APatch
Guide
https://t.me/physwizz3/74835

My First PC
https://t.me/physwizz2/901

My Management Plan
https://t.me/physwizz2/367

A20 Frequencies
https://t.me/physwizz2/157

Battery
https://t.me/physwizz2/129

Black Screen or Bootloop
https://t.me/physwizz2/219

Benchmark a20
https://t.me/physwizz2/644?single

Broken screen
https://t.me/physwizz2/286

Boot.img installers
Mediatek
Exynos 850
Exynos 9611
Exynos 7***
Exynos 9825

Boot Screens
https://t.me/physwizz2/580

Crash Recovery
https://t.me/physwizz2/13

CRB
https://t.me/physwizz2/289

CPU Operations
https://t.me/physwizz2/457

Download Mode
https://t.me/physwizz2/4

Download Mode missing
https://t.me/physwizz2/776

Dtbo Installer
https://t.me/physwizz2/250

Eros
https://t.me/ErosMobileTool

Extract image files
https://t.me/physwizz2/497

Format Data
https://t.me/physwizz2/109

GApps
https://t.me/physwizz2/113

Groups & Channels
https://t.me/physwizz2/1245

HKtweaks
https://t.me/physwizz3/3428

Install OneUI Without a PC
https://t.me/physwizz2/221

Install Custom ROMs
https://t.me/physwizz2/100

Install kernel from terminal
https://t.me/physwizz2/446

Install Stock Kernel & dtbo
https://t.me/physwizz2/87

Install boot.img from another phone
https://t.me/physwizz2/693

Installing Firmware
https://t.me/physwizz2/510

Install GSIs from odin
https://t.me/ex850chat/42886

Install recovery without PC
https://t.me/physwizz2/652

Kernel in the TWRP
https://t.me/physwizz2/81

Kernel Building
https://t.me/physwizz2/241

Magisk
https://t.me/physwizz2/1183

Mount system as rw
https://t.me/a127f_res/114

Gsirw
https://t.me/a12schat/8655

Physwizz app
https://t.me/physwizz2/375

Overclocking
https://t.me/physwizz2/3

Odin3
https://t.me/physwizz2/925

Recovery a20 R
https://t.me/physwizz2/393

Recovery Installation
https://t.me/physwizz2/563

Reduce Battery Drain
https://t.me/physwizz2/129

ROM Building
https://t.me/physwizz2/151

Root for a20 android 11
https://t.me/physwizz2/301

Root Methods
https://t.me/a127f_res/11

Spectrum for Gaming
https://t.me/physwizz2/171

Spectrum
https://t.me/physwizz2/244

Selinux
https://t.me/physwizz2/1049

Unlock Bootloader
https://t.me/physwizz2/181

Ubuntu on your phone
https://t.me/physwizz2/410

Thor
https://t.me/Samsung_f22_Community/60029

TWRP Building
https://t.me/a127f_res/204

Virtual Machine
https://t.me/physwizz2/339?single

Zram
https://t.me/physwizz2/168

XDA Collection
https://forum.xda-developers.com/t/physwizz-collection.4253081/

@physwizz

INDEX: ROMs and Mods from physwizz

About Me
https://t.me/physwizz2/2

Apk bundle
https://t.me/physwizz2/487

CRB ROMs
https://t.me/physwizz2/154

ROM Building
https://t.me/physwizz2/151

OneUI 7 port
https://github.com/OneUI7Porting/porter/tree/OneUI7

Debloaters
https://t.me/physwizz2/319

wizzROM Creators
https://t.me/physwizz2/318

Extra System Apps
https://t.me/physwizz2/320

Magisk Modules
https://t.me/physwizz2/321

Installing wizzROMs
https://t.me/physwizz2/526

QwizzROMs
https://t.me/physwizz2/257

RwizzROMs
https://t.me/physwizz2/263

physwizz app
https://t.me/physwizz2/313

A10s R TWRP
https://t.me/physwizz2/391

A217m twrp
https://t.me/c/1789350960/3321

GSIs
https://t.me/physwizz2/1370

Ultimate ROMs
https://t.me/ultimate_Pie2

@physwizz

SPECTRUM for A20

Install, reboot.
Access the pull down menu
Tap 3 dots
Tap button order
drag the spectrum icon into the pull down menu.
Reboot

It gives you 4 kernel profiles on Hktweaks which can also be accessed from the pull down menu.
1. Balanced : Big 520-1768, Little 546-1586
2. Performance: Big 1144-2184, Little 902-1690
3. Battery: Big 312-1560, Little: 208-1352
4. Gaming: Big 1352-2184, Little 1352-1690

@physwizz

physwizz A20 (SM-a205xx) v1.6
For OneUI 3.1 for GSI (Q or R)

@physwizz

-Samsung securities disabled.
-CPU Governors: conservative, ondemand, userspace, powersave, interactive, performance.
-Interactive is default governor
-SE linux enforcing
-CPU overclocked and underclocked
-Big: 208 - 2184
-Little: 208 - 1690
-GPU: 343 - 1300 without custom dtbo
-Extended battery life
-Spectrum support enabled
-Zram

If you have recently installed a kernel containing a custom dtbo.img you need to go back stock dtbo.img from your baseband (not your kernel or your ROM)
Instructions are here
https://t.me/physwizz2/250
Choose dtbo.img from
https://t.me/physwizz2/248
https://t.me/physwizz2/249
https://t.me/physwizz2/250

Flash magisk for root

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

Only for a205 with R baseband and U7 binary

Only for a205 with Q baseband and s7 binary