Firmware

DH_TPC-BF7X21-5421-2221_MultiLang_NP_V2.631.0000000.4.R.210630.bin

Dahua firmware released Jun 30, 2021. May work with 9 devices, including TPC-BF2221-TDHTML1, TPC-BF2221-TDHTML1O, TPC-BF5421-TDHTM.

Download

Permanent copy on the Internet Archive (item page)

Hardware IDs this firmware's installer accepts (9 devices).

Where these IDs come from

hwid: the device's own hardware check list, 9 IDs
Install: the installer's device list (board families), 4 IDs, vendor General (not counted: a more specific list exists)
check.img: the device's own hardware check list, 9 IDs

Read from inside the firmware (dahua package (zip variant)).

Supported languages (5)

English, TradChinese, Italian, Japanese, Korean

Flash layout: 24 partitions, 8 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	—	2021-06-30
U-Boot	0x200000	0x300000	1.0 MB	dhboot.bin.img	—	2021-06-30
hwid	0x300000	0x400000	1.0 MB	not written	—	—
dgs	0x400000	0x500000	1.0 MB	not written	—	—
updateflag	0x500000	0x600000	1.0 MB	not written	—	—
partition(ro)	0x600000	0x700000	1.0 MB	partition-x.cramfs.img	cramfs	2021-06-30
product(ro)	0x700000	0x900000	2.0 MB	pd-x.squashfs.img	squashfs	2021-06-30
Kernel	0x900000	0x1100000	8.0 MB	kernel.img	—	2021-06-30
romfs(ro)	0x1100000	0x3900000	40.0 MB	romfs-x.squashfs.img	squashfs	2021-06-30
web(ro)	0x3900000	0x4100000	8.0 MB	web-x.squashfs.img	squashfs	2021-06-30
aewb(ro)	0x4100000	0x4200000	1.0 MB	not written	squashfs	—
firmware(ro)	0x4200000	0x5f00000	29.0 MB	firmware-x.squashfs.img	squashfs	2021-06-30
backpart(ro)	0x5f00000	0x6000000	1.0 MB	not written	—	—
backproduct(ro)	0x6000000	0x6200000	2.0 MB	not written	—	—
backkernel	0x6200000	0x6a00000	8.0 MB	not written	—	—
backromfs(ro)	0x6a00000	0x9200000	40.0 MB	not written	—	—
backweb(ro)	0x9200000	0x9a00000	8.0 MB	not written	—	—
backaewb(ro)	0x9a00000	0x9b00000	1.0 MB	not written	—	—
backfirmware	0x9d00000	0xba00000	29.0 MB	not written	—	—
appdata	0xb800000	0xbc00000	4.0 MB	not written	ext4	—
backup	0xbc00000	0xcc00000	16.0 MB	not written	ubi	—
syslog	0xcc00000	0xdc00000	16.0 MB	not written	ubi	—
config	0xdc00000	0xec00000	16.0 MB	not written	ubi	—
data	0xec00000	0x10000000	20.0 MB	not written	ubi	—

Other files for much of the same hardware, from any vendor.