This is where the MR3420 v5 shines. OpenWRT has excellent support for the QCA9531. However, flashing it isn't as simple as clicking "Upload" on the stock UI.
TP-Link provides extensive official "paperwork" including user guides and installation manuals to ensure proper firmware management. Official User Guide tp-link mr3420 v5 firmware
| Partition | Offset | Size | Purpose | |-----------|--------|------|---------| | Bootloader | 0x00000 | 128KB | U-Boot | | Firmware | 0x20000 | ~3.75MB | Kernel + SquashFS | | ART | 0x3F0000 | 64KB | ATH/Radio calibration data | | Config | 0x3E0000 | 64KB | U-Boot env & device config | This is where the MR3420 v5 shines
to connect your computer directly to one of the router's LAN ports. Avoid updating over Wi-Fi, as a dropped connection during the process can brick the device. : Open a web browser and go to : Open a web browser and go to
Official firmware for the V5 hardware can be managed through the router's web interface (typically 192.168.0.1 ). :