This upgrade file applies for the ZR08MN / ZR08MM and ZR08MS DVR. 

You can find your DVR’s model number on the label at the bottom of your DVR.

If your DVR’s label is lost, please go to DVR’s Main Menu – Information – System to take a photo to us, we will send the correct upgrade file to you.

You can follow up the guide below to upgrade the DVR:

1) You needn’t open the upgrade file, please directly download the upgrade file and save it to your U-disk.

(Please save the upgrade file rootfs-3520dv400 in the root directory, not save it under any other folders.)

Note: to perform this process, you will want to use a USB 2.0 drive ideally 16 GB or less in size, formatted in FAT32.

Some customers have reported issues when downloading this file using the “Microsoft Edge” browser.

If the file was downloaded using the Microsoft Edge browser, this will cause the file to be converted to a text file, which can’t be read by the DVR. We recommend using a different browser for this process.

In case it helps, here is a link to a Youtube video demonstrating the process:

If you’re unfamiliar with how to format a USB in FAT32, this video provides the steps:

2) The file name must remain exactly as listed in the article for the DVR to recognize it as an update.

It should be rootfs-3520dv400, if the file name is changed to rootfs-3520dv400(1), the upgrade will be failed.

3) Before starting to upgrade, please unplug the power supply and mouse, then plug the U-disk and re-plug the power supply.

4) It can upgrade automatically as long as it has electricity, the upgrade process need to last several minutes, please be patient.

If the upgrade is successful, please go to the DVR’s Main Menu > Information > System to check if the firmware version and Launch date have changed.

If the upgrade is failed, we suggest you change another U-disk or USB port to try.

Please let us know if you have any questions:

Support Email address:  service@zositech.com

Our Facebook:  https://www.facebook.com/ZosiTechnology/

Support center: support@zositechhelp.zendesk.com

DVR Upgrade Files

• ZR08MN / ZR08MM and ZR08MS_V1.6.2 Upgrade File_rootfs-3520dv400
• ZR04TN_V1.6.1 Upgrade File_rootfs-3531dv100
• ZR04CN and ZR04CM_V1.6.1 Upgrade File_rootfs-3520dv400
• ZR04ZN and ZR04ZM_V1.4.4 Upgrade File_rootfs-hi3520d
• ZR04ZN and ZR04ZM_V1.6.1 Upgrade File_rootfs-hi3520d
• ZR04FN and ZR04FM_V1.4.4 Upgrade File_rootfs-3520dv300
• ZR04FN and ZR04FM_V1.6.1 Upgrade File_rootfs-3520dv300
• ZR04JS_V1.2.1 Upgrade File_rootfs-3521a (2827)
• ZR04JS_V1.4.5 Upgrade File_rootfs-3531a (2827)
• ZR04JS_V1.5.3 Upgrade File_rootfs-3521dv100 (2829)
• ZR04LN and ZR04LM_V1.2.1 Upgrade File_rootfs-3520dv300
• ZR08ZN and ZR08ZM_V1.4.5 Upgrade File_rootfs-3520dv300
• ZR08ZN and ZR08ZM_V1.6.1 Upgrade File_Hi3520DV300+2×TP2828
• ZR08BN and ZR08BM_V1.6.1 Upgrade File_rootfs-3520dv400 (HW Version: V01.1P2G.02.T)
• ZR08CN and ZR08CM_V1.6.1 Upgrade File_rootfs-3521dv100
• ZR08CN and ZR08CM_V1.6.3 Upgrade File_rootfs-3521dv100
• ZR08TN_V1.6.1 Upgrade File_rootfs-3531dv100
• ZR08KS_V1.3.1 Upgrade File_rootfs-3531a
• ZR08KS_V1.4.5 Upgrade File_rootfs-3531a (2827)
• ZR08KS_V1.6.1 Upgrade File_rootfs-3531dv100
• ZR08FN and ZR08FM_V1.4.5 Upgrade File_rootfs-3521a
• ZR08FN and ZR08FM_V1.6.1 Upgrade File_rootfs-3521a
• ZR08LN and ZR08LM_V1.2.1 Upgrade File_rootfs-3521a
• ZR08LN and ZR08LM_V1.3.1 Upgrade File_rootfs-3521a
• ZR16BK_V1.6.1 Upgrade File_rootfs-3521dv100
• ZR16BK_V1.6.3 Upgrade File_rootfs-3521dv100
• ZR16CK_V1.6.3 Upgrade File_rootfs-3531dv100
• ZR16CK_V1.6.1 Upgrade File_rootfs-3531dv100
• ZR16ZK_V1.4.5 Upgrade File_rootfs-3521a
• ZR16ZK_V1.6.1 Upgrade File_rootfs-3521a (2828)
• ZR16LK_V1.2.1 Upgrade File_rootfs-3531a
• ZR16JK_V1.4.5 Upgrade File_rootfs-3531a (2826)
• ZR16JK_V1.6.1 Upgrade File_rootfs-3531a
• ZR16QK_V1.2.1 Upgrade File_rootfs-3521a
• ZR08HF_V1.2.0 Upgrade File_rootfs-3521 (2018.3)
• ZR08AN and ZR08AM_V1.2.1 Upgrade File_rootfs-3520dv300 (2018.2.8)
• ZR08QN and ZR08QM_V1.2.1 Upgrade File_rootfs-3521a (TVI, 1080P)
• ZR04BE and ZR04BA_V1.2.0 Upgrade File_rootfs-3520d (2018.1 )
• ZR08EA_V1.2.0 Upgrade File_rootfs-3521
• ZR08DE and ZR08DA_V1.2.0 Upgrade File_rootfs-3520d (2018.1)
• ZR04GF_V1.2.0 Upgrade File_rootfs-hi3520d ( 2018.3)
• ZR08HA_V1.1.6 Upgrade File_rootfs-3521a (2018.3)
• ZR08AN and ZR08AM_V1.2.1 Upgrade File_rootfs-3520dv300 (TVI, 720P)
• ZR08KN and ZR08KM_V1.2.1 Upgrade File_rootfs-3520dv300 (TVI, 720P)
• ZR08EG Upgrade File_rootfs-3521
• ZR08HN and ZR08HM Upgrade File_rootfs-3521a
• ZR08HN and ZR08HM Upgrade File_rootfs-3520dv300
• ZR08HG Upgrade File_rootfs-3521a
• ZR04BE_V1.1.5 Upgrade File_rootfs-hi3520d
• ZR08DE_V1.1.5 Upgrade File_rootfs-hi3520d
• ZR08EM_V1.1.5 Upgrade File_rootfs-3521 (Wired DVR)
• ZR04PF_V1.1.5 Upgrade File_rootfs-3521
• ZR08QF_V1.1.5 Upgrade File_rootfs-3531
• ZR08DA_V1.1.5 Upgrade File_rootfs-hi3520d
• ZR08HF_V1.1.5 Upgrade File_rootfs-3521a
• ZR04GF_V1.1.5 Upgrade File_rootfs-hi3520d
• ZR04BA_V1.1.5 Upgrade File_rootfs-hi3520d
• ZR04PN_V1.2.1 Upgrade File_rootfs-3520dv300 (TVI, 1080P)
• ZR08HA_V1.1.6 Upgrade File_rootfs-3521a (AHD,720P DVR)
• ZR04GM_V1.1.6 Upgrade File_rootfs-hi3520d (AHD, 720P DVR)
• ZR16LK_V1.2.1 Upgrade File_rootfs-3531a
• ZR16JK_V1.4.5 Upgrade File_rootfs-3531a (2826)
• ZR16JK_V1.6.1 Upgrade File_rootfs-3531a
• ZR16QK_V1.2.1 Upgrade File_rootfs-3521a
• ZR08HF_V1.2.0 Upgrade File_rootfs-3521 (2018.3)
• ZR08AN and ZR08AM_V1.2.1 Upgrade File_rootfs-3520dv300 (2018.2.8)
• ZR08QN and ZR08QM_V1.2.1 Upgrade File_rootfs-3521a (TVI, 1080P)
• ZR04BE and ZR04BA_V1.2.0 Upgrade File_rootfs-3520d (2018.1 )
• ZR08EA_V1.2.0 Upgrade File_rootfs-3521
• ZR08DE and ZR08DA_V1.2.0 Upgrade File_rootfs-3520d (2018.1)
• ZR04GF_V1.2.0 Upgrade File_rootfs-hi3520d ( 2018.3)
• ZR08HA_V1.1.6 Upgrade File_rootfs-3521a (2018.3)
• ZR08AN and ZR08AM_V1.2.1 Upgrade File_rootfs-3520dv300 (TVI, 720P)
• ZR08KN and ZR08KM_V1.2.1 Upgrade File_rootfs-3520dv300 (TVI, 720P)
• ZR08EG Upgrade File_rootfs-3521
• ZR08HN and ZR08HM Upgrade File_rootfs-3521a
• ZR08HN and ZR08HM Upgrade File_rootfs-3520dv300
• ZR08HG Upgrade File_rootfs-3521a
• ZR04BE_V1.1.5 Upgrade File_rootfs-hi3520d
• ZR08DE_V1.1.5 Upgrade File_rootfs-hi3520d
• ZR08EM_V1.1.5 Upgrade File_rootfs-3521 (Wired DVR)
• ZR04PF_V1.1.5 Upgrade File_rootfs-3521
• ZR08QF_V1.1.5 Upgrade File_rootfs-3531
• ZR08DA_V1.1.5 Upgrade File_rootfs-hi3520d
• ZR08HF_V1.1.5 Upgrade File_rootfs-3521a
• ZR04GF_V1.1.5 Upgrade File_rootfs-hi3520d
• ZR04BA_V1.1.5 Upgrade File_rootfs-hi3520d
• ZR04PN_V1.2.1 Upgrade File_rootfs-3520dv300 (TVI, 1080P)
• ZR08HA_V1.1.6 Upgrade File_rootfs-3521a (AHD,720P DVR)
• ZR04GM_V1.1.6 Upgrade File_rootfs-hi3520d (AHD, 720P DVR)

• How to set up record and playback on DVR / POE NVR / Wireless NVR?
• How to set up recycle record on DVR / POE NVR / Wireless NVR?
• DVR日本語取扱説明書
• DVR Instructions in 4 langues
• Quick Start Guide for DVR/NVR system_Zosi Smart
• DVR wifi setting.
• DVR–Notice d_installation
• DVR Deutsche Anleitung
• Remote Surveillance Guidance.
• Motion Detection for DVR System
• 08KN: Guide de Démarrage Rapide
• Schedule recording.

Software

• Zosi Smart APP for Android
• Win Client_AVSS
• Mac Client_AVSS
• Win Client_IVSS
• PC Client _ ZOSI VIEW
• Mac Client _ ZOSI VIEW
• ZOSI VIEW APP for Android Phone

Table of Contents

• Information > Online Users
• Information > System
• Information Menu
• Live > Live
• Live > Main Monitor
• Live > Video Masking
• LIVE VIEW
• Log Off
• Main Menu
• Motion > Schedule
• Network > Email
• Network > Network
• Network > Substream
• New Password
• Playback
• Quick Menu
• Record > Enable
• Record > Record Bitrate
• Record > Recycle Record
• Record > Snap
• Record > Stamp
• Schedule > Motion
• Schedule > Schedule
• DVR Operation – Search > Event Search
• DVR Operation – Search > Image
• DVR Operation – Search > Time Search
• DVR Operation – Setup Menu
• DVR Operation – Shut Down
• DVR Operation – Zosi Smart Mobile App
• 10. Setup Wizard
• 9. Operating the DVR using the USB Mouse
• 8. Powering the DVR On
• 7. Connecting the Mouse to the DVR
• 6. Connecting the DVR to the Internet
• 5. Connecting the DVR to a VGA Monitor
• 4. Connecting the DVR to an HDMI TV or Monitor
• 3. Connecting the Cameras to the DVR
• Mounting the Bullet Cameras
• 2. How to connect your DVR/NVR through Zosi Smart APP
• 1. How To Register a Zosi Smart Account
• Before Installing your Zosi System

NVR Upgrade Files

• ZG3012M Battery Wireless Camera_V1.00.005Z_6a0X Upgrade File ALL_FW_SN93700.bin
• ZR04DR Battery Wireless NVR_V1.6.4 Upgrade File rootfs-3536dv100 (ZSWNVK-R4204A)
• ZR08DP Wireless NVR_V1.6.2 Upgrade File_rootfs-3536dv100 (ZSWNVK-H820XX)
• ZR08DP Wireless NVR_V1.6.4 Upgrade File_rootfs-3536dv100 (ZSWNVK-J820XX)
• ZR04DS Wireless NVR Upgrade File_rootfs-hi3520d
• GATEWAY_HI18Ev2_20190321_GATEWAY_N18EV2R_2_3_48_718010
• Upgrade file for NVR_K9504-W
• Upgrade file for NVR_K9508-W
• Upgrade file for NVR_K9608-W
• Upgrade file for NVR_K8204-W
• Upgrade file for NVR_K8208-W

• Windows Client_ZOSI Cloud
• Mac Client_ZOSI Cloud
• Search Tool for NVR system.

• MWM903 Wireless DVR manual2_ZSWNVK-M42021
• Quick Operation Guide – ZR08DP
• Quick Start Guide -ZHS-A2120W-W
• Notice du répéteur IP- ZIR4S
• NVR Bedienungsanleitung auf Deutsch_V2.7.9
• NVR Notice d_installation en français
• ET-1026 User Manual
• NVR-Deutsche Anleitung
• How to use a new Gmail mailbox account to set NVR mail alarms?
• NVR: Manual para el Sistema Inalámbrico
• NVR: Mode d’emploi du Système Sans Fil

• IPC Upgrade file_V2.6.0_391806
• IPC Upgrade file N18EV2W_2_3_1_578010
• IPC Upgrade file N18EV2W_1_8_24_578010B
• IPC Upgrade file WS18E_1_7_8_573013 version
• IPC Upgrade File N16DW_1_8_27_564221 Version
• IPC Upgrade file N18EV200_1_8_19_578011 version
• IPC Upgrade file N18E_1_6_1_573011 version

• 4-in-1弾丸カメラ取扱説明書
• Quick Start Guide_C190 Camera (Seven languages)
• Quick Start Guide_ZG2622MW-W (C199) IP Camera
• User Manual_Zosi-4 in 1 bullet camera
• ZND350W2 ZND520W2 ZBC288W2 APP YCC365 Plus Instruction Manual in (EN DE FR IT ES JP)
• User Manual -1NC-2811MW-W
• Notice d’installation-1NC-2811MW
• Notice d’installation-A3
• Notice de la Caméra PIR- Modèle C300
• Notice d’installation-Modèle 1ND-5122M-W-EU
• IPC Quick Start Guide_ZG2622MW-W Camera
• 5-in-1 IPC Quick Start Guide_1ND-5122M-W
• 5-in-1 IPC Quick Start Guide_1NB-2622MW-W Camera
• Notice de la Camera panoramique 360
• C199 Notice d_installation
• Search Tool for IP Camera.
• Outdoor Bullet Camera Instruction
• Instruction Manual for Dome camera

• IP Search
• SearchTool
• Q2/I2　パソコン専用アプリ
• Ipcamsuite V1.2.26.8