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Note: This is for SSD/HDD hybrids (SSHDs), not pure HDDs. Most pure Toshiba HDDs do not support in-OS updates.
If you are on a laptop, Do not run a firmware update on battery power. If the battery dies halfway through the update, your drive will be bricked. If you are on a desktop, ensure you are connected to a UPS (Uninterruptible Power Supply) if your local power grid is unstable. toshiba hdd firmware update tool download
The is not a single downloadable utility but a collection of model-specific updaters. To obtain the correct tool: Note: This is for SSD/HDD hybrids (SSHDs), not pure HDDs
FAQ :: How do I test the Hard Drive on my computer? :: Support - Toshiba toshiba hdd firmware update tool download