手機 - Unihertz Titan 2 (None-EEA) - 自定義鍵盤按鍵

參考資訊：
https://xdaforums.com/t/how-to-make-files-in-system-writable.4514603/
https://xdaforums.com/t/guide-how-to-change-files-in-the-directory-system-with-magisk.4454489/

步驟如下：

# mkdir -p /data/adb/modules/playstore/system/usr/keylayout/
# cp /system/usr/keylayout/TitanKey.kl /data/adb/modules/playstore/system/usr/keylayout/
# vi /data/adb/modules/playstore/system/usr/keylayout/TitanKey.kl
    # a71 KeyLayout

    # ROW1
    key 42    SHIFT_LEFT
    key 253   ALT_LEFT
    key 158   DPAD_LEFT
    key 580   DPAD_UP
    key 251   DPAD_DOWN
    key 100   DPAD_RIGHT

    # ROW2
    key 16    Q
    key 17    W
    key 18    E
    key 19    R
    key 20    T
    key 21    Y
    key 22    U
    key 23    I
    key 24    O
    key 25    P

    # ROW3
    key 30    A
    key 31    S
    key 32    D
    key 33    F
    key 34    G
    key 35    H
    key 36    J
    key 37    K
    key 38    L
    key 14    DEL

    # ROW4
    key 44    Z
    key 45    X
    key 46    C
    key 47    V
    key 57    SPACE
    key 48    B
    key 49    N
    key 50    M
    key 28    ENTER

# reboot

Func1 key: Ctrl key
Func2 key: Tab key
Debian: ~/.Xmodmap
Android: /data/adb/modules/playstore/system/usr/keylayout/TitanKey.kl
Android: /data/data/x.org.server/files/usr/share/X11/xkb/symbols/us