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TOS4.0 (Beta)
Please select a product ID/model no.
TOS4.0 (Beta)
D2-310
D4-300
D4-310
D5-300
D5-300C
D5/D4 Thunderbolt 3
D8 Thunderbolt 3
F2-210
F2-220
F2-221
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F5-220/F5-420
F5-421
F8-421
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  • TOS applications
Name Description Version Action Size Remark
Name Description Version Action Size Remark
TOS Update PackageFor TNAS device TOS update V4.0.10

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70MB
Release Note:
1.TOS 4.0.10Beta software can only be update from TOS 4.0.09 or later version. 2.Downgrade is not supported-after you install, you cannot downgrade the software to a previous version.
TOS Installation PackageFor new TNAS device TOS installation V4.0.10

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180MB
Name Description Version Action Size Remark
Name Description Version Action Size Remark