Hey machado_john,

it appears you're experiencing a specific issue with the SIMATIC IOT2050 FS 08 and 128 GB Samsung Evo Select micro SD cards. I am not aware of any such case. Maybe this are potential solutions:

Firmware Compatibility: The FS 08 version might have a different firmware that's not fully compatible with certain high-capacity SD cards. Check if there's a firmware update available for your FS 08 device that might address this issue. You can find updates on our Download Page.

Boot Order Configuration: Verify the boot order settings in the FS 08 device. You can check the current boot order by connecting via serial console and typing

fw_printernv boot_targets

If necessary, adjust the boot order using

fw_setenv boot_targets [devices]

SD Card Partition Scheme: Ensure the SD card has the correct partition scheme for booting. Use a tool like Rufus to create a proper bootable SD card image.

Hardware Compatibility: There might be a hardware-level incompatibility between the FS 08 and this specific SD card model. Try using a different brand or model of 128 GB SD card to see if the issue persists.

We originally made the following recommendation on Micro SD Cards:

BR