1. ROOT
The following procedures worked for me but I can't guarantee they will work for everyone.
Use them at your own risk
Save Your Data
Copy files to SD card or to usb or to computer
Use sms backup and restore app to save texts and phone calls
If Something Goes Very Wrong
Go here: https://forum.xda-developers.com/galaxy-a20/how-to/crash-recovery-t4068369
To Upgrade to Android 10
https://forum.xda-developers.com/galaxy-a20/how-to/upgrading-a20-to-android-10-t4087577
To Root and install TWRP
WARNING: Rooting your phone may be dangerous.
Rooting a device may void the warranty on the device. It may also make the device unstable or if not done properly, may completely brick the device. XDA-Developers or the author does not take any responsibility for your device. Root at your own risk and only if you understand what you are doing!
This method should root your Samsung Galaxy A20 (A205xx) and install TWRP (all models except SM-A205U).
For A20e (A202) go here
A20e Root,Kernel, TWRP and custom ROM
Root & TWRP from Xyn XDotnest https://forum.xda-developers.com/galaxy-a20/development/recovery-twrp-3-4-0-0-galaxy-a20e-a202f-t4141767 Orange Fox Recovery from @Royna...
forum.xda-developers.com
For A20s (A207) a root method has not yet been devised.
They are working on it here
t.me/GalaxyA20SS
1. On phone developer options in settings allow OEM unlocking and enable usb debugging by moving both
sliders RIGHT
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
If you don't see the OEM unlock
-Disable Auto System Update
-Then disable Automatic date and time (Found in General Management) > then set the time back 14 days
-Go to software update then check for update and wait till it registers the device on server
-Once it's registered the OEM Unlock should be visible in the Developer Options
then connect phone to PC
2. Reboot into download mode by holding down both Vol up and Vol down
(You might need to long press vol up to unlock bootloader)
then press vol up to continue
3. Use Odin to flash recovery.tar into the AP slot.
Android Q recovery v3: https://mega.nz/folder/w5syHQbb#vm7XzXKlbRaDl1nDTMuuCg
Black themed recovery with mtp
https://mega.nz/file/twERlKSL#RsZttve-GBKBDVYpZYFoTUNQ3jQ7bLTOYkvLH6xVE2M
Android R recovery
78.9 MB file on MEGA
mega.nz
4. Reboot the A20 into TWRP and mount everything you can.
5. Click Wipe then Format Data (not just wipe) - don't restart
6. Flash Disable_Dm-Verity_ForceEncrypt_03.04.2020.zip (https://forum.xda-developers.com/attachment.php?attachmentid=4975463&d=1584732187)
7. Wipe both caches and Reboot into Recovery (for Android 10 you will need to flash Magisk 20.4)
8. Reboot system and enter all your data
To reboot into TWRP, hold down"vol up" and "power" during reboot.
Backup boot, data and system so you can restore them if you need to.
Note: restore may not work on Stock ROM. In that case you may need to use the hybrid back and restore method. (https://forum.xda-developers.com/galaxy-a20/how-to/backup-restore-hybrid-method-t4076437)
2. RECOVERIES
To Change to SkyHawk Recovery
1. download file https://mega.nz/file/AolzUJpR#ptySg13zpobaDZjagatNkDKQdnAgVPt2I_C2k-ecqPk
2. unzip img file
3. flash img file into Recovery slot from TWRP
4. reboot into TWRP
Boot & data will backup and restore but system is missing from the Sky hawk backup list
MTP works at the OS level and can be activated at the recovery level using the cloud icon in the mount section of Sky Hawk recovery.
Modified Recoveries (TWRP 3.3 System backup)
I modified these recoveries so that the backup list has only boot, data and system
They are all TWRP 3.3 and backup /system
Modified TWRP from @crazo7924 original : https://mega.nz/file/J9lFXYRK#fztwPbunC0PMZW3IUBpYUFobTxhsm3Kp1KFUvrM4N7o
Modified SkyHawk from @crazo7924 original : https://mega.nz/file/MoshGSTY#U1SDjiUqYoFPMIOHuQSx6wKoXAzoP4_UCYWkA9F-9rk
Modified black mode TWRP with MTP from @Agrim720 original: https://mega.nz/file/k8VXhAiD#6jSiapRoYJo1cxeoPvu9Yz6pF8zJr0D5lfeI4CBXPAA
TWRP with Vendor included in backup list: https://mega.nz/file/E8cVmKKT#U-_GnsISW1Rmdj4NU9R7ucUxA5QpPaXbc0oYnP935RM
TWRP built on physwizz_kernel_v1. 49
https://mega.nz/file/4o9gBSDA#hWA020SdvqJ9XEIf4TAZI9tiqjlsd2HfQGbQCI30Gjw
Download the one you want
Reboot to recovery
Install => img => recovery
Reboot to recovery.
Boot, data & system will now work.
TWRP 3.4
https://forum.xda-developers.com/galaxy-a20/development/twrp-3-4-a20-t4144327
3. Custom ROMs
Installing Custom ROMs
1. Backup calls and texts using sms backup and restore .
2. Reboot into twrp.
3. Backup boot, data, system, vendor, product to sd card in case you want to go back to your current system
4. Wipe caches, data, system
5. Install Rom and your kernel
6. Format data (not just wipe) and then Install dmverity
7. Wipe caches. Don't reboot
8. Go to main menu. Select reboot. Select recovery
9. Reboot to system
10. Wait a long time (up to 10 minutes?)
Select your language
11. Restore data from smart switch or Google restore
or
Skip through setup and Restore data from twrp
12. Install Magisk if you want root
13. Install dmverity (in case step 8 didn't work)
If you need to install GApps
14. Wipe, advanced wipe
15. Select system, repair or change
16. Resize file system
17. Install GApps
To backup ROM before you go to a new system
Backup boot, data, system, product, vendor
Find custom ROMs here
Samsung Galaxy A20 ROMs, Kernels, Recoveries, & Ot
Jumping between ROMs
I recently discovered that there is an easy way to jump from one ROM to another.
For example if you are on S20 Port6 and you want to jump to S10+ or to Stock.
You need to have backups that include Vendor because each of these runs with a different Vendor.
This isn't needed to jump from Port 6 to a GSI and back because GSIs are usually independent of Vendor.
To restore to a previous ROM
1. Wipe both caches, data & system
2. Restore boot, data, system & vendor.
3. flash Magisk uninstaller
4. Reboot
You need to use this TWRP which includes Vendor in the backup list.
https://mega.nz/file/E8cVmKKT#U-_GnsISW1Rmdj4NU9R7ucUxA5QpPaXbc0oYnP935RM
4. KERNELS
Custom kernels here
Samsung Galaxy A20 ROMs, Kernels, Recoveries, & Ot
physwizz Latest
physwizz collection https://t.me/physwizz2
5. TWEAKS
To remove unwanted system apps
Use a root explorer to delete the apps you don't want from
/system/app
And
/system/priv-app
Reboot to recovery
Wipe caches
Reboot
Some apps might need to be deleted from app tray
You could also use file manager from TWRP but you have to go to
system/system/app
and
system/system/priv-app
For more debloating.
https://forum.xda-developers.com/ga...debloat-final-samsung-a20-android-10-t4171307
Swapping Kernels
If you want to run your current ROM with a kernel you had on a previous ROM just restore the boot (only) from the previous ROM. If you go from Magisk 20.4 back to Magisk 19.3 flash Magisk uninstaller first.
To Hide Root
Some apps don't work if your phone is rooted
Go to Magisk hide
Tick the app that won't work in root
To Improve Performance and Battery Life of Stock ROM
Use the Android Q tweaks from @hooooossamq here
https://forum.xda-developers.com/ga...erformance-build-prop-v1-0-stock-rom-t4073303
6. GSIs
List of all GSIs:
https://github.com/phhusson/treble_experimentations/wiki/Generic-System-Image-(GSI)-list
Always choose Android Q arm64 ab GSIs
Install guide: https://forum.xda-developers.com/showpost.php?p=80184282&postcount=2
Pixel Experience, EvolutionX & Havoc:
https://forum.xda-developers.com/pr...iscussion/gsi-expressluke-built-gsis-t4003457
Installing a GSI
1. Begin with stock ROM
2. Reboot into TWRP ( then mount product - system - vendor)
Back boot data and system
3. Wipe both caches, data & system
4. Install GSI
5. Flash Magisk and physwizz GSI kernel from here https://forum.xda-developers.com/t/kernel-physwizz-kernel-for-the-galaxy-a20.4180107/
6. Reboot.
7. Installing GApps
Some GSIs come with GApps. If you're doesn't and you want to have GApps, then use this method.
a.-Resize system partition so you can install OpenGAPPS, go to wipe, advanced wipe, select system, select repair or change file system and select resize file system. If you get error 1 unmount and mount the system partition and try again
b. Install GApps
Credits:
Ultimate Q : @shumway66 & @Gollo99
Kernel:
Minh's: @minhka98 (https://forum.xda-developers.com/galaxy-m30/development/custom-kernel-galaxy-m20-galaxy-m30-t4094369)
Quantum: CarlosBurelo
Recoveries:
@Agrim720
@crazo7924 (A30 dev. co-opted by shumway66)
Development of new ROMs and kernels is happening here
Telegram
Series A: https://t.me/ultimate_Pie2
A20/A20e: https://t.me/Galaxy_A20_official
physwizz collection https://t.me/physwizz2
physwizz collection
A collection of guides, kernels and ROMs. Guides Complete Guide to the A20 GSIs for the A20 Quick Root and TWRP for the A20 Making my First Kernel for the A20 A20 Rooting Guide Making Your Own ROM Making Your Own Version of QwizzROM-a20...
forum.xda-developers.com
Kernel Frequency Ranges MHz
Stock
Big: 936 - 1560
Little: 449 - 1352
GPU: 343 - 676
Minh's 14.6
Big: 208 - 2184
Little: 208 - 1690
GPU: 343 - 1300
Quantum v2
Big: 936 - 2184
Little: 449 - 1690
GPU: 343 - 676
Eureka 4.3
Big: 208 - 2184
Little: 208 - 1690
GPU: 343 - 1300
physwizz_kernel_v1.45
Big: 208 - 2080
Little: 208 - 1690
GPU: 343 - 676
CPU Benchmarks
Stock
244 900
Minh's 14.6
Standard 267 909
SamsungDeviceHealthManager removed 272 933
Overclocked 314 1032
View attachment 5031615View attachment 5031605View attachment 5031607
Quantum v2
Standard 238 721
Overclocked 261 751
View attachment 5031521View attachment 5031523
GPU Benchmarks
Stock
682 - 696
Minh's 14.6
Minh's 14.6 standard 1080
Minh's 14.6 with SamsungDeviceHealthManager deleted 1266
Minh's 14.6 overclocked 1316
View attachment 5019857View attachment 5019859
Quantum v2
Quantum v2 standard 673
Quantum v2 overclocked 707
View attachment 5019947View attachment 5019949
Eureka 3.0
Standard 1080
Overclocked 1391
How to Overclock[/I]
Use a root explorer to
Cut and paste /system/priv-app/SamsungDeviceHealthManager on to a different folder. (In case you want to put it back later)
Reboot to recovery
Wipe caches Reboot
Use Hktweaks to set minimums to highest stable values and leave it running in the background.
A20 KERNEL COMPARISON ON ZROM V2
Minh 14.7 with Magisk 20.4
GPU 1306
CPU 313 1059
GPU reverts to 1300 343
Antutu 139824
Eureka 3.0 with Magisk 20.3
GPU 1391
CPU 282 997
GPU stays at 1300 1300
Antutu 140482
Eureka 3.7
Install Magisk Uninstaller
Install kernel
Install Magisk 20.3
Reboot
You can install Magisk 20.4 later
Benchmarks
GPU 1395
CPU 276 975
Antutu: 140720
Eureka R4.3
GPU 1396
CPU 315 1099
Minh GPU fix
If you want the GPU to stay on your settings you need to apply this fix
sys/devices/platform/11500000.mali/dvfs
sys/devices/platform/11500000.mali/dvfs_min_lock
Chmod 000 (use a root explorer to remove all ticks in properties)
Don't restart
This process must be repeated if you do.
GPU benchmark increases from 1306 to 1379
Spectrum in post #3
SPECTRUM
Both Minh14.7 and Eureka 3.0 have Spectrum Support but Minh 14.6 works best because Spectrum can fit GPU settings.
@minhka98 has given us a Spectrum installer.
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 :
2. Performance:
3. Battery:
4. Gaming:
Installer
https://drive.google.com/file/d/17v...8840FSPc6_1yRxlT2YWgQNbrTTJb/view?usp=sharing
GPU CONTROL
Spectrum can control the GPU settings in Minh 14.6 but not in Eureka 3.0 or Minh 14.7.
You can change the GPU settings in Eureka 3.0 but not in Minh 14.6 or 14.7 unless you apply the GPU fix.
Great work
Sky hawk recovery now available
@physwizz Like magic, Sky Hawk Recovery falls out of the sky with no information on who built / ported it for A205 and no credit to the original developer. Themes don't save but no idea if that is peculiar to the A20 build, a fault in all Sky Hawk recoveries or who to report that to??? Don't get me going on the lack of Minh kernel source code or change logs..... Maybe this info is available on Telegram but it is not available here on this forum which is where it is meant to be.
A big thank you to all of these developers who have donated their time and energy to keep the A20 at the cutting edge as we move into Android Q
Ultimate Q : @shumway66 & @Gollo99
Kernel: @minhka98
Recoveries: @crazo7924
A big thank you to all of these developers who have donated their time and energy to keep the A20 at the cutting edge as we move into Android Q
Ultimate Q : @shumway66 & @Gollo99
Kernel: @minhka98
Recoveries: @crazo7924
physwizz said:
Sky hawk recovery now available
Click to expand...
Click to collapse
Some users have reported a faster backup and restore.
I haven't tested yet
MTP not working in recovery mode
@minhka98 Is there a possibility of patching your kernel to support MTP at recovery level in the same way the previous afaneh Pie kernel was patched to achieve this? @crazo7924 Themes settings do not save in your A205 Sky Hawk recovery.
jajk said:
@crazo7924 Themes settings do not save in your A205 Sky Hawk recovery.
Click to expand...
Click to collapse
Yes, applied themes don't persist after a reboot back to recovery. I'll look into the issue.
physwizz said:
A big thank you to all of these developers who have donated their time and energy to keep the A20 at the cutting edge as we move into Android Q
Ultimate Q : @shumway66 & @Gollo99
Kernel: @minhka98
Recoveries: @crazo7924
Click to expand...
Click to collapse
Thanks bro
jajk said:
@minhka98 Is there a possibility of patching your kernel to support MTP at recovery level in the same way the previous afaneh Pie kernel was patched to achieve this? @crazo7924 Themes settings do not save in your A205 Sky Hawk recovery.
Click to expand...
Click to collapse
Is the MTP at recovery level due to the kernel inside recovery?
@physwizz If you go back to when it was fixed for Pie TWRP, it was the afaneh kernel that fixed it, not TWRP. You can still see what he did in his github but unfortunately, we cannot see anything of the minh Q kernel alterations as the link provided just shows the original cloning of afaneh's project.....
jajk said:
@physwizz If you go back to when it was fixed for Pie TWRP, it was the afaneh kernel that fixed it, not TWRP. You can still see what he did in his github but unfortunately, we cannot see anything of the minh Q kernel alterations as the link provided just shows the original cloning of afaneh's project.....
Click to expand...
Click to collapse
I thought the 2 kernels operated at different times.
The os kernel is running at os level and the recovery kernel operates at recovery level.
@physwizz Could be right???? So who made the Q version of TWRP and what kernel does that use?
jajk said:
@physwizz Could be right???? So who made the Q version of TWRP and what kernel does that use?
Click to expand...
Click to collapse
Crazo7924 did both
jajk said:
@physwizz Could be right???? So who made the Q version of TWRP and what kernel does that use?
Click to expand...
Click to collapse
Why do you need it at recovery level?
@physwizz I have some GPS mapping files that are locked while at O.S level so I can't copy these unless in recovery. I do this on a regular basis to transfer these files across to other devices so it is much easier not to have to go through an intermediate process of copying to USB OTG or SDCard.
---------- Post added at 08:45 AM ---------- Previous post was at 08:45 AM ----------
[/COLOR @physwizz I have some GPS mapping files that are locked while at O.S level so I can't copy these unless in recovery. I do this on a regular basis to transfer these files across to other devices so it is much easier not to have to go through an intermediate process of copying to USB OTG or SDCard.
jajk said:
@physwizz I have some GPS mapping files that are locked while at O.S level so I can't copy these unless in recovery. I do this on a regular basis to transfer these files across to other devices so it is much easier not to have to go through an intermediate process of copying to USB OTG or SDCard.
---------- Post added at 08:45 AM ---------- Previous post was at 08:45 AM ----------
[/COLOR @physwizz I have some GPS mapping files that are locked while at O.S level so I can't copy these unless in recovery. I do this on a regular basis to transfer these files across to other devices so it is much easier not to have to go through an intermediate process of copying to USB OTG or SDCard.
Click to expand...
Click to collapse
Oh
PwizzROM-j7 NXT
TESTERS PLEASE
debloated OneUI
based on j701f
Extras:
Battery charge limit
Clean Master
ES file explorer
HKtweaks
SimpleReboot
Root Explorer
Zarchiver
Installation
1. Wipe caches, data, system and vendor
2. Install ROM
3. Install dmverity
4. Reboot to recovery
5. Reboot
Note:
This ROM contains everything I like.
If you want something else, I can show you how to build your own.
@physwizz
ROM
Work in Progress
Source
Download Galaxy J7 Core SM-J701F (INS) J701FDDUACUG2 in Samfw - Samsung firmware download
Galaxy J7 Core SM-J701F (INS - India) J701FDDUACUG2 Pie(Android 9) samsung firmware download all model, lastest, fast update, completely free and fast speed in Samfw.com ✅
samfw.com
physwizz collection
A collection of guides, kernels and ROMs. Guides Complete Guide to the A20 GSIs for the A20 Quick Root and TWRP for the A20 Making my First Kernel for the A20 A20 Rooting Guide Making Your Own ROM Making Your Own Version of QwizzROM-a20...
forum.xda-developers.com
Please I want pictures of this ROM
not work
hanynoshy said:
not work
Click to expand...
Click to collapse
Ok
Thanks for testing
wizzROM a12 Creator
for Samsung a125
Turn any stock or custom OneUI into a QwizzROM or RwizzROM
Also see the Magisk module in post#2
OneUI 2.0 will become QwizzROM
OneUI 3.1 will become RwizzROM
Debloated ROM with Extras
Extras:
Battery charge limit
Clean Master
ES file explorer
HKtweaks
SimpleReboot
Root Explorer
Zarchiver
Make sure your OneUI ROM iis running befote you start
Installation
1 Backup system from recovery
2 Install the creator
3 Reboot
4 Enjoy
For better performance add my kernel
physwizz a12 kernel version 2 & 3
physwizz a12 kernel version 2 for u1 Based on a125f For OneUI 3.1 (May be unstable for some GSIs) V3 for u2 in post#2 Samsung restrictions disabled More CPU governors Optimised for performance Install from TWRP. Ignore the error message during...
forum.xda-developers.com
Name your wizzROM (optional)
1. Use a root explorer to copy and paste system/build.prop to new location
2. Edit build.prop like this
ro.build.display.id=<your-name>
3. Use zarchiver to paste the new build.prop into the system folder inside wizzROM-creator-a12.zip
4. Install wizzROM-creator-a12.zip
@physwizz
wizzROM Creator module for Magisk
for all Samsung a-series phones
Turn any stock or custom OneUI into a QwizzROM or RwizzROM
OneUI 2.0 will become QwizzROM
OneUI 3.1 will become RwizzROM
Debloated ROM with Extras
Extras:
Battery charge limit
Clean Master
ES file explorer
HKtweaks
SimpleReboot
Root Explorer
Zarchiver
Make sure your OneUI ROM iis running befote you start
Installation
1 Backup system from recovery
2 Install the creator from Magisk
3 Reboot
4 Enjoy
Name your wizzROM (optional)
1. Use a root explorer to copy and paste system/build.prop to new location
2. Edit build.prop like this
ro.build.display.id=<your-name>
3. Use zarchiver to paste the new build.prop into the system folder inside wizzROM-creator.zip
4. Install wizzROM-creator.zip
@physwizz
Thanks for your work!
T
LAST_krypton said:
Thanks for your work!
Click to expand...
Click to collapse
Thanks.
I'm thinking of buying a12 since I dropped my a20 and cracked the screen.
Development is a bit tricky with mediatek.
Most of my kernels are Exynos.
Although I have built for a10s which is mediatek
physwizz said:
T
Thanks.
I'm thinking of buying a12 since I dropped my a20 and cracked the screen.
Development is a bit tricky with mediatek.
Most of my kernels are Exynos.
Although I have built for a10s which is mediatek
Click to expand...
Click to collapse
A custom kernel would be nice for this phone.
LAST_krypton said:
A custom kernel would be nice for this phone
Click to expand...
Click to collapse
This one works
physwizz a12 kernel version 2 & 3
physwizz a12 kernel version 2 for u1 Based on a125f For OneUI 3.1 (May be unstable for some GSIs) V3 for u2 in post#2 Samsung restrictions disabled More CPU governors Optimised for performance Install from TWRP. Ignore the error message during...
forum.xda-developers.com
My understanding is that you have to be rooted to install this?
mzahs said:
My understanding is that you have to be rooted to install this?
Click to expand...
Click to collapse
Yes
RwizzROM a127f
Debloated OneUI 3.1 ROM
Extras:
Battery charge limit
Clean Master
ES file explorer
HKtweaks
SimpleReboot
Root Explorer
Zarchiver
Physwizz kernel v5
Samsung securities disabled
More CPU governors
Conservative, On-demand, Userspace, powersave, performance, energy_step, shedutil
Optimised for performance
Overclocked for performance
Underclocked for battery
CPU: 130MHz - 2210MHz
lz4 compression added to zram
Ready for spectrum installation
Installation
Boot into recovery
Mount system etc
Wipe data.
Install RwizzROM
Mount system etc
Install multidisabler
Reboot to recovery
Mount system etc
Install multidisabler again
Reboot
Wait for welcome screen
Go through setup completely
Note:
First boot takes a long time (be patient)
@physwizz
ROM
RwizzROM-a127f-v1.zip
drive.google.com
Kernel
physwizz - Overview
physwizz has 170 repositories available. Follow their code on GitHub.
github.com
Post 2
I just built an Rwizzrom from u3 firmware and I couldn't even mount system or vendor.
Hellow can i use this rom to unlock my phone? Sim lock
judynar22 said:
Hellow can i use this rom to unlock my phone? Sim lock
Click to expand...
Click to collapse
no
can you build twrp for A135F???
Nana4374 said:
can you build twrp for A135F???
Click to expand...
Click to collapse
Use my wizzrom creator module instead
wizzROM Creator
wizzROM Creator module v4 Thermal for all Samsung a-series phones OneUI 2.0 will become QwizzROM OneUI 3.1 will become RwizzROM OneUI 4.0 will become SwizzROM Debloated ROM with Extras Fixed apps in system/product Extras: Battery charge limit...
forum.xda-developers.com