The problem is that the partitions are protected and can not be modified, to do so we will have to install the kmod-mtd-rw module, which allows us to modify the partitions if we execute the command insmod mtd-rw i_want_a_brick=1.Īfter: Primary instruction cache 32kB, VIPT, 2-way, linesize 16 bytes. We will copy the file cal_data_hg556.bin to the folder “/etc” in the router and we will have it available to restore the calibration data.
Use WinSCP to transfer the cal_data backup file to your computer. Now backup the mtd that matches to the cal_data partition, mtd5 in all of them.ĭd if=/dev/mtd5 of=/etc/cal_data_HG556.bin
Use the method “OEM easy installation” to flash 17.01.4 version, cal_data is not destroyed, and wifi is fully functional.
There is an easy way if you flash from stock firmware.
