If N2520 N2560 N4520 N4560 cannot be used after a period of normal use (OS6) (Eng,繁中,簡中­)

1. Update N2520/N2560/N4520/N4560 to the latest OS6.1-21 through the following tools:
http://thecus.kayako.com/Knowledgebase/Article/View/633/0/n2520-n2560-n4520-n4560-os61-build-latest-usb-upgradeeng

2. Clear the OS6 system of N2310, N2520, N2560, N4520, and N4560 in the hard disk, retain the data, and perform a new OS initialization:
http://thecus.kayako.com/Knowledgebase/Article/View/217/0/how-to-remove-n2310-n2520-n2560-n4520-n4560-os6-from-hdd-and-keep-data-than-

3. If all the above methods are invalid:
https://thecus.kayako.com/default_import/Knowledgebase/Article/View/how-to-access-data-if-nas-out-of-order-or-end-of-life-eoleng
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若N2520 N2560 N4520 N4560 正常使用了一段時間之後無法使用 (OS6)

1.透過以下工具更新N2520/N2560/N4520/N4560至最新的OS6.1-21：
http://thecus.kayako.com/Knowledgebase/Article/View/633/0/n2520-n2560-n4520-n4560-os61-build-latest-usb-upgradeeng

2.清除硬碟中 N2310 N2520 N2560 N4520 N4560 的 OS6系統, 保留資料, 並執行新的OS初始化：
http://thecus.kayako.com/Knowledgebase/Article/View/217/0/how-to-remove-n2310-n2520-n2560-n4520-n4560-os6-from-hdd-and-keep-data-than-

3.如果以上的方式皆無效:
https://thecus.kayako.com/default_import/Knowledgebase/Article/View/how-to-access-data-if-nas-out-of-order-or-end-of-life-eoleng

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若N2520 N2560 N4520 N4560 正常使用了一段时间之后无法使用 (OS6)

1.透过以下工具更新N2520/N2560/N4520/N4560至最新的OS6.1-21：
http://thecus.kayako.com/Knowledgebase/Article/View/633/0/n2520-n2560-n4520-n4560-os61-build-latest-usb-upgradeeng

2.清除硬碟中 N2310 N2520 N2560 N4520 N4560 的 OS6系统, 保留资料, 并执行新的OS初始化：
http://thecus.kayako.com/Knowledgebase/Article/View/217/0/how-to-remove-n2310-n2520-n2560-n4520-n4560-os6-from-hdd-and-keep-data-than-

3.如果以上的方式皆无效:
https://thecus.kayako.com/default_import/Knowledgebase/Article/View/how-to-access-data-if-nas-out-of-order-or-end-of-life-eoleng