Hacking V2801F, TWCGPON657 & DFP-34X-2C2 to suite your ISP Fiber
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Hacking_RTL9601C1

Hacking V2801F & TWCGPON657 to suite your ISP Fiber

Issue

GPON market is a mess, plus explicit OMCI cause ONU Stick did not work

With my issue:

  • V2801F build quality is bad, firmware is good, manage to have an internet connection
  • TWCGPON657 build quality is good, firmware is bad, when GPON Password is set, stick hang and CPU usage become 100%

Since we dont have source code, try mix and match binary between V2801F and TWCGPON657

Usage

Modify

You need a Linux PC/VM, Ubuntu as Operating System

Prerequisite

You need these program installed:

  • tar (extract tar package)
  • squashfs-tools (extract/repack rootfs)
  • qemu-user-static (run MIPS VM)

Extract firmware

  • Extract Firmware package in tar format, we need rootfs file
  • Extract rootfs partition
unsquashfs rootfs

Repack firmware

  • Repack rootfs
mksquashfs squashfs-root rootfs.new -b 131072 -comp lzma
  • Rename rootfs
mv rootfs rootfs.old
mv rootfs.new rootfs
  • Update md5sum
md5sum fwu.sh rootfs uImage fwu_ver > md5.txt
  • tar current folder
tar -cvf ../firmware.tar *