DVMT_and_0xE2_fix

DVMT and 0xE2 fix

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Instruction

MX150 Only!

0. SUPER IMPORTANT! Modifications only checked on BIOS 603. Neither @FallenChromium nor Cyb is responsible for any damage, all is working for us, but you're doing all on your risk.

   • After several tests, I found that the script is safe for 0906 BIOS.

1. IMPORTANT - Make a backup file using backup.cmd, save output file mybackup.bin somewhere in the cloud. This is a proof-of-concept and not stable revision.

2. Before any other manipulations, make sure PowerShell scripts execution is allowed on your Windows machine. Further info here. I set all of policies (CurrentUser and etc.) to Unrestricted and only after this executables worked for me.

3. Execute bios_unlock.cmd before making any further changes to BIOS.

4. Execute DVMT_set.cmd to make DVMT=64mb. You need to restart to let it work. You can't apply all the patches and restart aftetward as it would apply only the latest patch.

5. Execute CFG_unlock.cmd, restart again.

6. Execute bios_lock.cmd to lock BIOS settings for security.

7. Delete DVMT patches and change framebuffer-flags.

• For both Clover and OC users:
  • Open /EFI/CLOVER (or OC)/config.plist, delete the following code:

    <key>framebuffer-fbmem</key>
    <data>AACQAA==</data>
    <key>framebuffer-stolenmem</key>
    <data>AAAwAQ==</data>

• Then edit the framebuffer-flags to enable FBEnableDynamicCDCLK

    <key>framebuffer-flags</key>
-   <data>CwfDAA==</data>
+   <data>CwfjAA==</data>

• Optional, change ig-platform-id to 0x05001c59 (macOS version > 10.14) to enhance graphic performance

    <key>AAPL,ig-platform-id</key>
-   <data>AAAWWQ==</data>
+   <data>BQAcWQ==</data>
    <key>AAPL,slot-name</key>
    <string>Internal</string>
    <key>complete-modeset-framebuffers</key>
    <data>AAAAAAAAAAE=</data>
    <key>device-id</key>
    <data>FlkAAA==</data>
    <key>force-online</key>
    <data>AQAAAA==</data>
    <key>force-online-framebuffers</key>
    <data>AAAAAAAAAAE=</data>
-   <key>framebuffer-con0-enable</key>
-   <data>AQAAAA==</data>
-   <key>framebuffer-con0-flags</key>
-   <data>mAQAAA==</data>
    <key>framebuffer-con1-enable</key>
    <data>AQAAAA==</data>
-   <key>framebuffer-con1-flags</key>
-   <data>xwMAAA==</data>
    <key>framebuffer-con1-pipe</key>
    <data>CgAAAA==</data>
    <key>framebuffer-con1-type</key>
    <data>AAgAAA==</data>
    <key>framebuffer-con2-enable</key>
    <data>AQAAAA==</data>
-   <key>framebuffer-con2-flags</key>
-   <data>xwMAAA==</data>

8. Disable MSR 0xE2 patch.

• For Clover users, change the following code to disable MSR 0xE2 patch:

    <key>KernelPm</key>
-   <true/>
+   <false/>

• For OC users, change the following code to disable MSR 0xE2 patch:

    <key>AppleXcpmCfgLock</key>
-   <true/>
+   <false/>

Tutorial

You can watch video tutorial in this link:Xiaomi Mi Notebook Pro Прошивка BIOS + Патч кулеров [4K]

Credits

• Thanks to FallenChromium and Cyb for writing the script and instruction.