: Typically compatible with Winbond chips like the 25Q128 series often found in these Chinese-manufactured CCTV units. How to Use the Dump File

: Provides a generalized list of firmware compatible with Hisilicon SoC-based recorders like the Hi3520D . Hardware Compatibility

Depending on the state of your DVR, you can apply this file using one of two methods: If your DVR still powers on and allows menu access:

This dump file is designed for motherboards with the following specifications: : AHB700XT8-3520D Version : V4.03B Chipset : Hisilicon Hi3520D SoC

You can find the specific EEPROM dump file at the following verified community repair sites:

The flash dump file for the is a critical piece of firmware data used primarily for unbricking devices, resetting forgotten passwords, or repairing corrupted system files. Download Resources

: This repository hosts the dvr-ahb700xt8-3520d_v4.03b_dump_eeprom_not_passwor_by_h2h.rar file. Note that this version is specifically labeled "NOT PASSWORD," meaning it can be used to bypass existing lockouts.