Solved garlin's PowerShell scripts for updating Secure Boot CA 2023


garlin said:
MCT is still offering the Sep 2026 ISO. Sometime on Thursday of this week, it will switch to October's ISO. If you're not sure, wait for this Friday before running MCT again.
Click to expand...
OK thanks - will do.
 

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@garlin.
I ran the latest scripts and here is what I get. I cannot boot from my USB installation media anymore. 😵‍💫🤷‍♂️

1792014864463.webp


1792014901276.webp

1792014929429.webp
 

My Computer My Computer

At a glance

Windows 11 Pro 25H2Intel I9-9900K64GBNVIDIA RTX 2060
OS
Windows 11 Pro 25H2
Computer type
PC/Desktop
Manufacturer/Model
Dell XPS 8930
CPU
Intel I9-9900K
Memory
64GB
Graphics Card(s)
NVIDIA RTX 2060
Sound Card
NVIDIA High Definition Audio
Monitor(s) Displays
4k Samsung
Screen Resolution
3840 x 2160
Hard Drives
512GB NVMe, ADATA SU 800, 2TB HDD
"Update-UEFI.bat -BootMedia" will replace the boot manager and boot.stl on the USB media. However it won't fix the fact that .9457 install image has a lower version of the boot manager.

Same advice to everyone else: Wait until Thursday, when MCT rolls the offered ISO to version .9711
 

My Computer My Computer

At a glance

Windows 7
OS
Windows 7
garlin said:
"Update-UEFI.bat -BootMedia" will replace the boot manager and boot.stl on the USB media. However it won't fix the fact that .9457 install image has a lower version of the boot manager.

Same advice to everyone else: Wait until Thursday, when MCT rolls the offered ISO to version .9711
Click to expand...
Thankyou.
I'll wait for the new MCT with .9711.
I hope that will work. 🤞

B.T.W.
I tried "Update-UEFI.bat -BootMedia" and it just changed behavior, got Error code. 0xc0000428 (digital signature cannot be verified) when trying to boot.
Before running that it was just turning off the PC.
I really hope that the new MCT 26300.9711 will fix the problem or we will be in real big troubles. 😒

This is the error showing after trying Update-UEFI.bat -BootMedia 😒
1792021456430.webp
 
Last edited:

My Computer My Computer

At a glance

Windows 11 Pro 25H2Intel I9-9900K64GBNVIDIA RTX 2060
OS
Windows 11 Pro 25H2
Computer type
PC/Desktop
Manufacturer/Model
Dell XPS 8930
CPU
Intel I9-9900K
Memory
64GB
Graphics Card(s)
NVIDIA RTX 2060
Sound Card
NVIDIA High Definition Audio
Monitor(s) Displays
4k Samsung
Screen Resolution
3840 x 2160
Hard Drives
512GB NVMe, ADATA SU 800, 2TB HDD
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