Thank you for sharing your method; it worked pretty well for me. However, I'm seeking some guidance on how you managed to determine the correct values for "bs," "skip," and "count." I've been trying to install the latest version, and despite following the suggestion in this forum post (URGENT: Trying to revert to original firmware, but Failed to erase block - #8 by brenton), I couldn't quite figure it out.
Here's the output from the binwalk command that I attempted:
$ binwalk 'Archer_MR600v2_1.6.0_0.9.1_[220105-rel58321]_up_boot_Release_2022-01-05_16.41.23.bin'
DECIMAL HEXADECIMAL DESCRIPTION
--------------------------------------------------------------------------------
73936 0x120D0 U-Boot version string, "U-Boot 1.1.3 (Jan 5 2022 - 15:46:51)"
132096 0x20400 uImage header, header size: 64 bytes, header CRC: 0x3676CEB7, created: 2022-01-05 07:52:13, image size: 1950293 bytes, Data Address: 0x81001000, Entry Point: 0x813D34D0, data CRC: 0x9D6B59CA, OS: Linux, CPU: MIPS, image type: OS Kernel Image, compression type: lzma, image name: "Linux Kernel Image"
132160 0x20440 LZMA compressed data, properties: 0x5D, dictionary size: 33554432 bytes, uncompressed size: 5622656 bytes
2228736 0x220200 Squashfs filesystem, little endian, version 4.0, compression:xz, size: 9988072 bytes, 731 inodes, blocksize: 131072 bytes, created: 2022-01-05 08:12:14
16515584 0xFC0200 Zip archive data, at least v1.0 to extract, name: bin/
16515646 0xFC023E Zip archive data, at least v1.0 to extract, name: lib/
16515708 0xFC027C Zip archive data, at least v2.0 to extract, compressed size: 26325, uncompressed size: 227187, name: lib/NetIspInfo.ini
16542345 0xFC6A89 End of Zip archive, footer length: 22
16542367 0xFC6A9F Zip archive data, at least v2.0 to extract, compressed size: 3776957, uncompressed size: 4569088, name: mdm9640-boot.img
20319398 0x1360CA6 Zip archive data, at least v2.0 to extract, compressed size: 27316734, uncompressed size: 38535168, name: mdm9640-sysfs.ubi
47636207 0x2D6DEEF Zip archive data, at least v2.0 to extract, compressed size: 30722848, uncompressed size: 38404096, name: NON-HLOS.ubi
78359380 0x4ABAB54 End of Zip archive, footer length: 22
I hope you can provide insight into how you determined these values. Your assistance would be greatly appreciated.
Thank you.