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--- doc:appunti:hardware:xiaomi_mi_a1 [2019/11/09 15:38] – [Recovery Mode] niccolo
+++ doc:appunti:hardware:xiaomi_mi_a1 [2020/03/25 15:29] – [March 2020 security update] niccolo
@@ Line 323: / Line 323: @@
 The main content is a **payload.bin**, in our case it was an incremental update (November 2018 Security patches), with size of about 66 Mb. It seems that there is a tool able to extract the content of that payload files, see **[[https://forum.xda-developers.com/android/development/extract-files-ota-payload-bin-diff-t3959161|Extract files from OTA payload.bin full and incremental]]**.
+===== March 2020 security update =====
+In March 2020 Xiaomi released a new security update, according to this post **[[https://piunikaweb.com/2020/03/18/mi-a1-android-10-update-dream-keeps-fading-as-the-device-picks-up-march-security-patch/|Mi A1 Android 10 update dream keeps fading]]**, it is another **AndroidOne v.9** relase, build number **V10.0.19.0.PDHMIXM**.
+I performed the upgrade re-installing **TWRP** and **Magisk** afterward. The starting conditions were:
+  * A/B System Updates status: **Current Slot: B** (checked via TWRP => Reboot screen).
+  * Bootloader is **unlocked**.
+  * Installed O.S.: Android: 9, Build number: **PKQ1.180917.001.V10.0.14.0.PDHMIXM** (check from Impostazioni => Sistema => Informazioni sul telefono).
+  * From //Impostazioni// => //Sistema// => //Avanzate// => //Aggiornamento di sistema// we get informed about **Aggiornamento sistema disponibile**, **March 2020 security update** (1100.3 Mb). The file is already downloaded and the phone suggests to reboot to install.
+  * **Magisk** v20.1 and **TWRP** 3.3.0 were installed into **boot partition** (Slot B).
+  * **System partition** was the stock one: root privileges were never used to tamper the **/system** hierarchy.
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