[Android Q&A, Help & Troubleshooting] physwizz:
Installing Custom Recoveries

A. Preparation.

1. Download firmware for your device

2. Extract ap file using Zarchiver and extract recovery.img from recovery.img.lz4 and compress it to recovery.tar

3. Patch the ap file with a magisk which will patch both boot.img and vbmeta.img (from magisk, choose install then select file to patch)

Exynos 850 Resources

t.me

Alternatively you can extract boot.img.lz4 and vbmeta.img.lz4 from the ap file and compress them into a new tar file and then patch that file.

note: if you don't want root then just extract the vbmeta.img and use zarchiver to add it to my twrp.tar file.

For Exynos 850 android 11 use a21s patched magisk.

For android 12 and most other devices use delta magisk

4. Unlock OEM in developer options

5. Attach phone to pc and reboot to download mode

6. flash patched ap file.

Or..

Extract boot.img and vbmeta.img and add them to the TWRP zip.

7. Download recovery.img or download twrp.tar and extract recovery.img using Zarchiver.

B.Installation

Note1: Many phones will bootloop if you format data

Note 2: Multidisabler will not work on some phones

Note 3: some phones may need to be connected a pc or other device to boot to recovery

Method 1.

1. Connect to pc and boot into stock recovery

2. Factory reset

3. Reboot into download mode.

4. flash twrp tar file from Odin into the ap slot

5. reboot to recovery

6. Advanced, terminal. Type multidisabler (twice).

7.

Or flash samsung multidisabler zip

For mtk devices use this one

💮 in physwizz testing & discussion

- support for mtk + unisoc - wipe userdata auto work

t.me

Or, for older phones flash dmverity zip

8. Reboot to recovery from main menu (not just reboot)

Backup boot, data, super and dtbo

9. Reboot to system

Method 2.

If you have already installed recovery and decrypted.

Extract recovery.img

1. Boot to recovery.

2. Install recovery.img

3. Choose recovery partition

4. Reboot to system then reboot to recovery

Backup boot, data, super and dtbo

(For Pitch-black just install the zip)

Method 3.

1. Install TWRP app

Extract recovery.img

2. Install TWRP

3. Choose file to flash.(don't select device)

4. Select recovery.img.

5. Reboot to recovery.

6. (You may need to change data partition to ext4 first if format ruins your system)

7. Reboot to recovery.

8. Wipe, format data, type YES.

9. Advanced, terminal.

10.Type multidisabler (twice).

Or flash samsung multidisabler zip

Or, for older phones flash dmverity zip

11.Reboot to recovery

12. Flash Magisk for root(only for method 3)

13. Backup boot, data, super and dtbo

Method 4

Using a second phone

Physwizz Collection

To flash TWRP from phone1 to phone2 Only if you have already installed recovery and decrypted. Method 1 Thor https://t.me/fdur2021projects/314 Method 2 heimdall 1. Install this termux on phone1 2. Setup storage termux-setup-storage 3. Install this Heimdall Magisk module on phone1 Or...

t.me

Method 5

If you have already installed recovery and decrypted.

install from system

1. extract recovery.img from tar file

2. open terminal app

3. navigate to folder containing recovery.img

4. type the following

dd if=/sdcard/recovery.img of=/dev/block/by-name/recovery

read t -5;reboot recovery

Method 6

If you have already installed recovery and decrypted.

Try bugjaeger mobile adb-usb otg app from playstore

C. Recovery Problems?

1. Did you root using the full ap file patched Magisk .

(This contains the patched boot.img and vbmeta.img)

2. Did you then go all the way through the setup process?

3. Did you download the recovery to match your baseband?

See https://t.me/a127f_res/54 for Exynos 850 recoveries

4. Did you hold down power and volume up after Odin says pass?

5. Did you format data from stock recovery?

If you forgot to do this, just install stock recovery.img from TWRP and reboot.

6. Did you type multidisabler twice?

If it doesn't work try this

Physwizz Collection

Decrypt. If multidisabler doesn't work try this method. 1. Copy /vendor/etc/fstab.**** over to another folder. 2. Edit it to remove the line containing the word "encryption" (just put # in front of /dev...... 3. Boot into twrp 4. Use twrp file manager to replace the fstab file with the...

t.me

7. Did you reboot to recovery by choosing reboot from the menu and then choosing recovery?

8. To avoid touch issues go to settings and untick "allow time out"

9.For touch issues use a usb mouse

physwizz(MCMLIV) in physwizz testing & discussion

If touch doesn't work on twrp, connect a usb mouse Everyone has an old mouse at home and the adapter costs less than a cup of coffee

t.me

10. If you can't see all the partitions use Dynapatch

Exynos 850 Resources

t.me

D.To restore Stock Recovery

1. Attach phone to pc and reboot to download mode

2. flash patched ap file or stock recovery.tar

3. reboot

Or just flash stock recovery.img from twrp and reboot.

@physwizz