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File version :
Description : JOA Mobile USB Modem
Copyright : Copyright(c) JOA
Product Version :
Product Name : JOA
Company Name : JOA
Internal name : JA_mdm.sys
File Size: 42240 byte(s) 41.256 KB
MD5 : 6722479b2e880f123066f2c45d7cb5c4
SHA1: 5320B8EDE29F5EC242CE98D1E3D6CD81993B8DB5

Download JA_mdm.sys
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How to Install JA_mdm.sys
Repair Sys ProblemsFixing a corrupted or missing JA_mdm.sys error is an easy process with a few steps. Open the zip-file you downloaded.Extract the .sys file to a location on your computer. We recommend you to unzip the file to the directory of the program that is requesting the file.
If that doesn't work, you will have to extract the file to your system directory.
By default, this is C:/WINNT/system32/drivers (Windows NT/2000).
or C:/Windows/system32/drivers (Windows XP, Vista, 7).
Make sure overwrite any existing files (but make a backup copy of the original file)
That should be it. Although not necessary you can reboot your computer as well.