Firmware
DH_SD-Gram_MultiLang_PN_Stream3_V2.820.0000014.2.R.250812.zip
Dahua firmware released Sep 10, 2025. May work with 36 devices, including CA-HZ4025QB-8F-0400-A, CA-HZ4033QA-4F-0400-A, CA-HZ4033QA-4F-0400-B.
- Released
- Sep 10, 2025
- Version
- V2.820.0000014.2.R
- Size
- 629.8 MB
- Hardware
- 36 devices
Download
Download firmware
Permanent copy on the Internet Archive (item page)
- MD5
acb92dafda23649423859e3ecf6a36f5- SHA-256
2737d8da48203d21ed3cf002e04e7c99fa2e432ef8f3fd79094ee252d0427c60- Changelog
- Release notes
Where it's published
Available from
Dahua
Dahua Download Center
CurrentV2.820.0000014.2.R · Listed date Sep 10, 2025
Compatible hardware
Hardware IDs this firmware's installer accepts (36 devices).
- CA-HZ4025QB-8F-0400-A
- CA-HZ4033QA-4F-0400-A
- CA-HZ4033QA-4F-0400-B
- CA-HZ4033QA-4F-0400-C
- CA-HZ4040QA-A
- CA-HZ4040QA-B
- CA-HZ4040QA-D
- CA-HZ4041QA-4F-0400-A
- CA-HZ4041QA-4F-0400-B
- CA-HZ4041QA-4F-0400-C
- CA-HZ4041QA1-4F-0400-A
- CA-HZ4041QA1-4F-0400-B
- CA-HZ8040QA-A
- CA-HZ8040QA-B
- CA-HZ8045QG-A
- PTZ914A0-8F-QW-A
- PTZ914A0-8F-QW-B
- SDT5X223-2F-QA-0600-A
- SDT5X225-2F-QA-0600-A
- SDT5X2425-4Z4-QA-0832-A
- SDT5X2425-4Z4-QA-0832-B
- SDT5X2425-4Z4-QA1-0832-A
- SDT5X2433-4Z4-QA-0832-A
- SDT5X2433-4Z4-QA-2812-A
- SDT5X2437-4Z4-QA-0832-A
- SDT5X405-4F-QA-0600-A
- SDT5X405-4F-QA1-0600-A
- SDT5X405-4F-QA1-0600-B
- SDT5X425-4Z4-QA-0832-A
- SDT5X425-4Z4-QA-2812-A
- SDT5X425-4Z4-QA1-0832-A
- SDT5X425-4Z4-QA1-0832-B
- SDT5X425-4Z4-QA1-2812-A
- SDT7C1405-4F-QA-0600-A
- SDT7C1405-4F-QA-0600-B
- SDT7C1425-4F-QB-0600-A
Where these IDs come from
- hwid in DH_SD-Gram_MultiLang_PN_Stream3_V2.820.0000014.2.R.250812.bin: the device's own hardware check list, 36 IDs
- Install in DH_SD-Gram_MultiLang_PN_Stream3_V2.820.0000014.2.R.250812.bin: the installer's device list (board families), 1 ID, vendor General (not counted: a more specific list exists)
- check.img in DH_SD-Gram_MultiLang_PN_Stream3_V2.820.0000014.2.R.250812.bin: the device's own hardware check list, 36 IDs
Technical details
Read from inside the firmware (zip archive).
- Architecture
- arm
- OEM build
- General
- Bootloader
- U-Boot 2016.11-svn17834
- Flash
- 17179869190.6 GB
- Image dates
- Aug 12, 2025
- Security
- Signed
- Language & video
- English by default · 23 languages · PAL
Supported languages (23)
English, Italian, Spanish, Russian, French, German, Portuguese, Polish, Korean, Czech, Dutch, Arabic, SpanishEU, Turkish, Ukrainian, Hebrew, Hungarian, Romanian, Thai, Indonesian, Vietnamese, TradChinese, Japanese
Flash layout: 27 partitions, 9 written by this firmware
From the firmware's partition table (partitionV2.txt).
| Partition | Start | End | Size | Image | Filesystem | Built |
|---|---|---|---|---|---|---|
| mini-Boot | 0x0 | 0x100000 | 1.0 MB | dhboot-min.bin.img | — | 2025-08-12 |
| U-Boot | 0x200000 | 0x300000 | 1.0 MB | dhboot.bin.img | — | 2025-08-12 |
| hwid | 0x300000 | 0x400000 | 1.0 MB | not written | — | — |
| updateflag | 0x400000 | 0x500000 | 1.0 MB | not written | — | — |
| partition(ro) | 0x500000 | 0x600000 | 1.0 MB | partition-x.cramfs.img | cramfs | 2025-08-12 |
| lens | 0x600000 | 0xa00000 | 4.0 MB | not written | — | — |
| dgs | 0xa00000 | 0xe00000 | 4.0 MB | not written | — | — |
| config | 0xe00000 | 0x1e00000 | 16.0 MB | not written | — | — |
| backup | 0x1e00000 | 0x2e00000 | 16.0 MB | not written | — | — |
| syslog | 0x2e00000 | 0x3e00000 | 16.0 MB | not written | — | — |
| devconfig | 0x3e00000 | 0x4e00000 | 16.0 MB | not written | — | — |
| custom(ro) | 0x4e00000 | 0x5200000 | 4.0 MB | custom-x.squashfs.img | squashfs | 2025-08-12 |
| product(ro) | 0x5200000 | 0x5600000 | 4.0 MB | pd-x.squashfs.img | squashfs | 2025-08-12 |
| Kernel | 0x5600000 | 0x6600000 | 16.0 MB | kernel.img | — | 2025-08-12 |
| web(ro) | 0x6600000 | 0x8600000 | 32.0 MB | web-x.squashfs.img | squashfs | 2025-08-12 |
| romfs(ro) | 0x8600000 | 0x18600000 | 256.0 MB | romfs-x.squashfs.img | squashfs | 2025-08-12 |
| backpart | 0x18600000 | 0x18700000 | 1.0 MB | not written | — | — |
| bakcustom | 0x18700000 | 0x18b00000 | 4.0 MB | not written | — | — |
| backproduct | 0x18b00000 | 0x18f00000 | 4.0 MB | not written | — | — |
| backkernel | 0x18f00000 | 0x19f00000 | 16.0 MB | not written | — | — |
| backweb | 0x19f00000 | 0x1bf00000 | 32.0 MB | not written | — | — |
| backromfs | 0x1bf00000 | 0x2bf00000 | 256.0 MB | not written | — | — |
| res | 0x2bf00000 | 0x57400000 | 693.0 MB | not written | — | — |
| firmware(ro) | 0x57400000 | 0xb7400000 | 1.5 GB | firmware-x.ext4_aa.img | ext4 | 2025-08-12 |
| sfmw | 0xb7400000 | 0x127400000 | 1.8 GB | not written | ext4 | — |
| appdata | 0x127400000 | 0x1a7400000 | 2.0 GB | not written | — | — |
| coredump | 0x1a7400000 | 0x100000001a73fffff | 17179869184.0 GB | not written | — | — |
Related firmware
Other files for much of the same hardware, from any vendor.
- DH_SD-Gram_MultiLang_PN_Stream3_V2.820.0000002.1.R.210904.zip
Released Mar 14, 2022 · V2.820.0000002.1.R · 29 devices · Dahua