Lenovo SSD MMCRE28G5MXP TRIM Update
I bought an used Lenovo W510 laptop which had an Samsung MMCRE28G5MXP-0VBH1 SSD installed. After some time it got slower and slower when I created, copied or extracted files. After reading some forum entries I came to the conclusion that the missing TRIM feature was the problem - and that Lenovo doesn’t provide a firmware update even if the drive is able to TRIM. Luckily, some guys already found a way to update the drive with the original Samsung firmware.