rigacci.org

User Tools

Site Tools

Trace:
doc:appunti:hardware:xiaomi_mi_a1

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revisionPrevious revision
Next revision		Previous revision
doc:appunti:hardware:xiaomi_mi_a1 [2020/03/26 08:58] – [March 2020 security update] niccolodoc:appunti:hardware:xiaomi_mi_a1 [2020/09/23 17:06] (current) – [August 2020 security update] niccolo
Line 10: Line 10:
 ^ Internal Memory  | 32 Gb   | ^ Internal Memory  | 32 Gb   |
 ^ CPU              | Qualcomm Snapdragon 625 2.0GHz 8-core  | ^ CPU              | Qualcomm Snapdragon 625 2.0GHz 8-core  |
 +^ Architecture     | arm64-v8a  |
 ^ Screen           | 5.5 Inches, 1920 x 1080  | ^ Screen           | 5.5 Inches, 1920 x 1080  |
 ^ Connector        | USB Type C  | ^ Connector        | USB Type C  |
Line 389: Line 390:
  
 Once rebooted the phone into normal system, I installed the root permissions manager: **MagiskManager-v7.5.1.apk**. Once rebooted the phone into normal system, I installed the root permissions manager: **MagiskManager-v7.5.1.apk**.
 +
 +===== August 2020 security update =====
 +
 +This is a new update from Xiaomi, still featuring **AndroidOne v.9** relase, build **PKQ1.180917.001.V10.0.24.0.PDHMIXM**. The upgrade was downloaded nightly over the WiFi. It seems impossibile to prevent such automatic download: I did not find any settings to prevent automatic upgrade download. After downloading, the phone asks to reboot to complete the upgrade.
 +
 +The starting conditions were:
 +
 +  * A/B System Updates status: **Current Slot: ?** (may be it was **A**, because after installation it is **B**).
 +  * Bootloader is **unlocked**.
 +  * **Magisk** and **TWRP** were installed, but may be they were hidden by accident. Infact the installation of the upgrade went OK after a reboot, whereas it should fail because the boot sector is tampered with **Magisk su**.
 +  * **System partition** was the stock one: root privileges were never used to tamper the **/system** hierarchy.
 +
 +After the upgrade, I did the following to get **root again**:
 +
 +  * adb reboot bootloader
 +  * fastboot boot twrp-3.3.0-2-tissot.img
 +  * Verified from TWRP => Reboot: **Current slot: B**
 +  * adb pull /dev/block/mmcblk0p22 boot_a.img
 +  * adb pull /dev/block/mmcblk0p23 boot_b.img
 +  * TWRP ⇒ Install ⇒ **twrp-installer-3.3.0-2-tissot.zip**\\ Running boot image patcher on slot a and b.
 +  * system reboot
 +  * adb reboot bootloader
 +  * fastboot boot twrp-3.3.0-2-tissot.img
 +  * TWRP ⇒ Install ⇒ **Magisk-v20.4.zip**\\ Current boot slot: _b, unpacking, patching, repacking, flashing new boot image.
 +
 ===== Web References ===== ===== Web References =====
  
doc/appunti/hardware/xiaomi_mi_a1.1585209536.txt.gz · Last modified: 2020/03/26 08:58 by niccolo