Firmware
DH_SD-4X-Hugo_MultiLang_PN_V3.120.0000000.40.R.260717.zip
Dahua firmware released Jul 30, 2026. May work with 5 devices, including SD49420NAS2-4F-0280-A, SD49420NAS2-4F-0280-A-EN, SD49420NAS2-4F-0280-C.
- Released
- Jul 30, 2026
- Version
- V3.120.0000000.40.R
- Size
- 102.8 MB
- Hardware
- 5 devices
Download
Download firmware
Permanent copy on the Internet Archive (item page)
- MD5
d0c133da7c77c91fad96b7b97d399765- SHA-256
1c1625a53d49e4b7d02af745ce4fef51a766a2ce89b714bba2ae637eb0376c08- Changelog
- Release notes
Where it's published
Available from
Dahua
Dahua Download Center
CurrentSold as
V3.120.0000000.40.R · Listed date Jul 30, 2026
Compatible hardware
Hardware IDs this firmware's installer accepts (5 devices).
- SD49420NAS2-4F-0280-A
- SD49420NAS2-4F-0280-A-EN
- SD49420NAS2-4F-0280-C
- SD49420NAS2-4F-0280-E
- SD49420NAS2-4F-0280-E-EN
Where these IDs come from
- hwid in DH_SD-4X-Hugo_MultiLang_PN_V3.120.0000000.40.R.260717.bin: the device's own hardware check list, 5 IDs
- Install in DH_SD-4X-Hugo_MultiLang_PN_V3.120.0000000.40.R.260717.bin: the installer's device list (board families), 1 ID, vendor General (not counted: a more specific list exists)
- check.img in DH_SD-4X-Hugo_MultiLang_PN_V3.120.0000000.40.R.260717.bin: the device's own hardware check list, 5 IDs
Technical details
Read from inside the firmware (zip archive).
- SoC
- Axera: one of AX620E, AX620Q, AX630C, AX620X
- Architecture
- arm
- OEM build
- General
- Kernel
- Linux 4.19.125
- Bootloader
- U-Boot 2020.04-svn17771
- Image dates
- Jul 17, 2026
- Security
- Signed, not encrypted
- Language & video
- English by default · 23 languages · PAL
- Software version
- V3.120.0000000.40.R.260717
Supported languages (23)
English, TradChinese, Italian, Spanish, Japanese, Russian, French, German, Portugal, Turkey, Poland, Romanian, Hungarian, Korean, Czechish, Dutch, Ukrainian, Vietnamese, Arabic, SpanishEU, Hebrew, Thai, Indonesian
Flash layout: 7 partitions, 7 written by this firmware
From the image headers (only partitions this firmware writes).
| Partition | Start | End | Size | Image | Filesystem | Built |
|---|---|---|---|---|---|---|
| minboot | 0x0 | 0x80000 | 512.0 KB | dhboot-min.bin.img | — | 2026-07-17 |
| bootloader | 0x80000 | 0x200000 | 1.5 MB | dhboot.bin.img | — | 2026-07-17 |
| boot-bak | 0x200000 | 0x380000 | 1.5 MB | dhboot-bak.bin.img | — | 2026-07-17 |
| kernel | 0x680000 | 0xb80000 | 5.0 MB | kernel.img | — | 2026-07-17 |
| rootfs | 0xb80000 | 0xd900000 | 205.5 MB | romfs-x.squashfs.img | squashfs | 2026-07-17 |
| aol | 0xd900000 | 0xdc00000 | 3.0 MB | kernel-aol.img | — | 2026-07-17 |
| aol | 0xdc00000 | 0xeb00000 | 15.0 MB | romfs-x-aol.squashfs.img | squashfs | 2026-07-17 |