[GUIDE only for those who already have the 20 pro for CallRecorder Genuine]

[ventu87]

This guide was not created by me but by a user who took my request to heart and is ante0 whoever had the phone in hand and wanted to try it would make a huge pleasure to the whole community! let the result know, of course![/SIZE]

Download and install Minimal ADB and Fastboot (if you have not already done so): https://www.androidfilehost.com/?fid=746010030569952951
Download and extract HwCallRecorder: https://mega.nz/#!QHwkCY4A!KDZhQmhqE ... Incmy_y06-c0O4
Download TWRP: https://mega.nz/#!RfhHhARK!UIFgF-ndi...CLxFTspAJAos5E
Start in fastboot mode (connect usb, hold down vol + power until the phone is restarted, keep holding down vol)
Flash TWRP: flash fastboot recovery_ramdisk P20_TWRP_PIEZ.img
Restarting for recovery (Remove the USB cable, press and hold up + power)
In TWRP, connect usb to computer for
open a command prompt and verify that ADB
functions: shell adb
If you get a ": / #", it works. If it says "error: no device / emulator found" does not work

If ADB works:
Open a new command prompt and type this command:
adb push HwCallRecorder / / system / app /
This assumes that the command prompt is open in the same folder as HwCallRecorder is (and HwCallRecorder is checked out), otherwise you will need to "cd" or place HwCallRecorder in the same folder as you have adb.
Switch to the command prompt with the adb shell in it.
Copy these commands one by one and paste the adb shell command prompt: (Ctrl + C then press the right mouse button to paste)
chmod -R 0755 / system / app / HwCallRecorder
chmod 0644 /system/app/HwCallRecorder/HwCallRecorder.apk
chmod 0644 /system/app/HwCallRecorder/oat/arm64/HwCallRecorder.odex
chmod 0644 /system/app/HwCallRecorder/oat/arm64/HwCallRecorder.vdex
At the end it is possible to restart the system.

If adb does not work, there is not much to do: /
OTG does not seem to work (yet) in this TWRP. It can once someone builds a better version

ITA VERSION:

Scarica e installa Minimal ADB e Fastboot (se non lo hai già fatto): https://www.androidfilehost.com/?fid=746010030569952951
Scarica ed estrai HwCallRecorder: https://mega.nz/#!QHwkCY4A!KDZhQmhqE ... Incmy_y06-c0O4
Scarica TWRP: https://mega.nz/#!RfhHhARK!UIFgF-ndi...CLxFTspAJAos5E
Avvio in modalità fastboot (Collega usb, tieni premuto vol down + power fino al riavvio del telefono, continua a tenere giù vol )
Flash TWRP: flash fastboot recovery_ramdisk P20_TWRP_PIEZ.img
Riavvio per il ripristino (Rimuovere il cavo USB, tenere premuto up + alimentazione)
In TWRP, collegare usb al computer per
aprire un prompt dei comandi e verificare che ADB
funzioni : shell adb
Se ottieni un ": / #", funziona. Se dice "errore: nessun dispositivo / emulatore trovato" non funziona

Se ADB funziona:
Apri un nuovo prompt dei comandi e digita questo comando:
adb push HwCallRecorder / / system / app /
Questo presuppone che il prompt dei comandi sia aperto nello stesso cartella come HwCallRecorder è (e HwCallRecorder è estratto), in caso contrario dovrai "cd" o posizionare HwCallRecorder nella stessa cartella che hai adb.
Passa al prompt dei comandi con la shell adb al suo interno.
Copia questi comandi uno per uno e incolla il prompt dei comandi di adb shell: (Ctrl + C quindi premi il tasto destro del mouse per incollare)
chmod -R 0755 / system / app / HwCallRecorder
chmod 0644 /system/app/HwCallRecorder/HwCallRecorder.apk
chmod 0644 /system/app/HwCallRecorder/oat/arm64/HwCallRecorder.odex
chmod 0644 /system/app/HwCallRecorder/oat/arm64/HwCallRecorder.vdex
Al termine è possibile riavviare il sistema.

Se adb non funziona, non c'è molto da fare: /
OTG non sembra funzionare (ancora) in questo TWRP. Può una volta che qualcuno ne costruisce una versione migliore.

 

[ante0]

This guide has not been tested on Mate 20. It's fine on Mate 10 Pro Pie, but the big question is if that TWRP works or not. So someone with a Mate 20 would have to test that first. Don't proceed with this guide if you don't know how to restore stock recovery (I haven't seen any firmware for Mate 20 yet, except for a early test version released as BLAOVS on FF).