Ah, interesting. So the jumper process basically allows you to overwrite the existing firmware without the router checking the file for a vendor ID (like if you did it directly via the routers web UI).
It appears the creator messed about with the USB Huawei firmware tool too, so it'd allow the upgrade.
Yeah, it isn't for the fainthearted!
Though I did find the editor tool, which one could effectively modify an existing firmware with and then overwrite their own in the router web UI.....
qhuaweiflash
Graphic utility for flashing modems and routers by HUAWEI and editing firmware files
This utility is intended for:
- Firmwares of huawei modems that support a firmware protocol similar to that used in modems on Balong V7. Including full-fledged work with digital signatures of firmware is implemented.
- Editing firmware images. You can view, add, delete, change individual sections, change section headers. Implemented editing of partition images in HEX code and, in part, in format mode (if the section has any meaningful format).
- Usbloader downloader downloads using patch patches.
The utility is built on the Qt graphics package, and is a windowed version of the utilities balong_flash, balong-usbload, and also a firmware editor.
Might work on the B535 too then...... I'm certainly not going to brick my router trying it though