現在販売中のCrucial SSD m4 （64GB、128GB、256GB、512GB）について 最新ファームウェアのアップデートをお知らせ致します。このファームウェアは下記症状発生を回避する点からお客様のアップデートを強く推奨致します。
対象型番
| Client Solid State Drives |
| 2.5" 9.5mm | Description | UPC | JAN CODE |
|---|
| CT064M4SSD2 | 64GB Crucial m4 SATA 6Gbps 2.5" (9.5mm) SSD | 649528752178 | 4540395600110 |
| CT064M4SSD2CCA | 64GB Crucial m4 SATA 6Gbps 2.5" (9.5mm) SSD w/ Data Transfer Kit | 649528752673 | 4540395600127 |
| CT128M4SSD2 | 128GB Crucial m4 SATA 6Gbps 2.5" (9.5mm) SSD | 649528752185 | 4540395600141 |
| CT128M4SSD2CCA | 128GB Crucial m4 SATA 6Gbps 2.5" (9.5mm) SSD w/ Data Transfer Kit | 649528752666 | 4540395600158 |
| CT256M4SSD2 | 256GB Crucial m4 SATA 6Gbps 2.5" (9.5mm) SSD | 649528752192 | 4540395600172 |
| CT256M4SSD2CCA | 256GB Crucial m4 SATA 6Gbps 2.5" (9.5mm) SSD w/ Data Transfer Kit | 649528752659 | 4540395600189 |
| CT512M4SSD2 | 512GB Crucial m4 SATA 6Gbps 2.5" (9.5mm) SSD | 649528752208 | 4540395600202 |
| CT512M4SSD2CCA | 512GB Crucial m4 SATA 6Gbps 2.5" (9.5mm) SSD w/ Data Transfer Kit | 649528752642 | 4540395600219 |
| 症状： | 通電時間が累計5,184時間（1日8時間ご利用の場合で約1年10ヶ月）
に達すると反応しなくなる事象が発生します。なお、この件に起因するデータ消失はございません。 |
「ファームウェア アップデート ガイド」はこちら(日本語)
REFERENCE:
Changes made in version 0002 (m4 can be updated to revision 0309 directly from either revision 0001, 0002, or 0009)
Correct a condition where an incorrect response to a SMART counter will cause the m4 drive to become unresponsive after 5184 hours of Power-on time. The drive will recover after a power cycle, however, this failure will repeat once per hour after reaching this point. The condition will allow the end user to successfully update firmware, and poses no risk to user or system data stored on the drive.
This firmware update is STRONGLY RECOMMENDED for drives in the field. Although the failure mode due to the SMART Power On Hours counter poses no risk to saved user data, the failure mode can become repetitive, and pose a nuisance to the end user. If the end user has not yet observed this failure mode, this update is required to prevent it from happening.
If you are using a SAS Expander please do not download this Firmware. As soon as we have a Firmware Update that will work in these applications we will release it.
