However it's available at the Dell website: ĭell Support link: This package contains the firmware for Toshiba KBG40ZNS128G 128GB, KBG40ZNS256G 256GB, KBG40ZNS512G 512GB, and KBG40ZNS1T02 1TB, Revision 10410104. However Microsoft isn't providing the firmware to update the drives. For those who have the Toshiba / Kioxia BG4 SSD, there's a firmware update for the drive and applies to these models: KBG40ZNS128G
