diff --git a/README.md b/README.md index 82334cf..338abe7 100644 --- a/README.md +++ b/README.md @@ -15,7 +15,7 @@ After reading [this article](https://www.ghacks.net/2017/03/22/kb4012218-kb40122 > Enabled detection of processor generation and hardware support when PC tries to scan or download updates through Windows Update. -Which is really just Microsoft's nice way of telling you to fuck yourself if you want to keep using Windows 7 or 8.1. There even have been people with AMD and Intel systems from 2015 who have reportedly been locked out of Windows Update because of this! +Which is just Microsoft's nice way of telling everyone who'd rather keep using Windows 7 or 8.1 to fuck themselves. _There have even been people with AMD and Intel systems from 2015 who have reportedly been locked out of Windows Update because of this!_ ## Bad Microsoft! @@ -104,11 +104,11 @@ We have found culprits, [`IsDeviceServiceable(void)`](https://gist.github.com/z ## Solutions -`IsCPUSupported(void)` is only ever called by `IsDeviceServiceable(void)`, which is called by five other functions. Luckily, there are a few potential ways to kill this CPU check. +`IsCPUSupported(void)` is only ever called by `IsDeviceServiceable(void)`, which is called by five other functions. Luckily, there are a few ways to kill this CPU check. 1. Patch `wuaueng.dll` and change `dword_600002EE948` (see [this line](https://gist.github.com/zeffy/e5ec266952932bc905eb0cbc6ed72185#file-isdeviceserviceable-c-L7)) which is at file offset `0x26C948`, from `0x01` to `0x00`, which makes `IsDeviceServiceable(void)` jump over its entire body and return 1 (supported CPU) immediately. This is my preferred method, because it is the least intrusive and doesn't require any runtime memory patching. **These offsets are only for the Windows 7 x64 version, I will upload `.xdelta` files for all of the other versions eventually.** The only downside of this method is you have to re-apply the patch whenever `wuaueng.dll` gets updated. -2. `nop` all the instructions out highlighted [here](https://gist.github.com/zeffy/e5ec266952932bc905eb0cbc6ed72185#file-isdeviceserviceable-asm-L24-L26) in `IsDeviceServiceable(void)`, this will enable the usage of the `ForceUnsupportedCPU` of type `REG_DWORD` under the registry key `HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Test\Scan` (create it if it doesn't exist, if you want to use this method). Set this value to `0x00000001` to force unsupported CPUs, and back to `0x00000000` to change the behaviour back to default. -3. I guess you could do runtime memory patching with Windows APIs too, but that's ugly. +2. `nop` all the instructions out highlighted [here](https://gist.github.com/zeffy/e5ec266952932bc905eb0cbc6ed72185#file-isdeviceserviceable-asm-L24-L26) in `IsDeviceServiceable(void)`, this will enable the usage of the `ForceUnsupportedCPU` of type `REG_DWORD` under the registry key `HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Test\Scan` (if you want to use this method, you will probably have to create it). Set this value to `0x00000001` to force unsupported CPUs, and back to `0x00000000` to change the behaviour back to default. **This behaviour is undocumented and could be removed in future updates.** +3. I guess you could do runtime memory patching, but that's ugly. [KB4012218]: https://www.catalog.update.microsoft.com/search.aspx?q=kb4012218 [KB4012219]: https://www.catalog.update.microsoft.com/search.aspx?q=kb4012219