Hi everyone,
A: Technically yes, but not recommended. One dropped Wi-Fi signal mid-flash = brick.
| Risk | Consequence | Mitigation | |------|-------------|-------------| | Power loss during write | Permanent brick | Use UPS/battery backup | | Wrong firmware version | Boot loop or brick | Triple-check ISP & hardware revision (PCB rev printed on label) | | Interrupted HTTP upload | Corrupted flash | Use wired Ethernet, avoid browser sleep | | ISP lock mismatch | Device unusable | Only use firmware from your original ISP |