TinyFlash Download
| Date | SHA1 | Version | File |
|---|---|---|---|
| 2026-07-23 20:02:55 | 2d5d4cf5f7690e7e5ee9889c07550597fb280f22 | 1.2.8.6 | Download |
Requirements:
Unfortunately, last Windows secuirty updates, basically killed original OpenPort 2.0 Drivers because they are not WHQL signed.
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If you have Windows 11 Pro or higher, You can disable signing check in Group Policy.

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Or Disable Secure Boot and with administrator command line:
bcdedit.exe -set loadoptions DISABLE_INTEGRITY_CHECKS
bcdedit.exe -set TESTSIGNING ON
In both option, I suggest to install good quality Antivirus or use virtual machine.