Hello! I have two JE005A Hardware Version is REV.B and one of them being upgraded to 1910_5.20.R1513P98 (default was 1910_5.20.R1111P02). Now i cannot access to web interface by http+firefox, while another JE005A with old firmware is available. When i try downgrade, it returns error:
Failed to upgrade software.
Error in setting boot file.
My questions is:
- Whether 5.20.R15 versions of firmware compatible with my JE005A? If not:
- How can i downgrade to 5.20.R11?