System information

General Reference Guide Upgrading the eWON firmware
RG-001-0-EN ver 1.5 eWON® - 20/03/2009 - ©ACT'L sa Page 197
9.4 Downgrade firmware
9.4.1 Firmware prior to 5
On firmware version prior to 5.x, the downgrade procedure is the same as the upgrade procedure :
- use the “ewonfwr.edf” of the target firmware and copy it on the eWON root directory by FTP.
Note: After a downgrade, it is recommended to format completely your eWON.
9.4.2 Firmware version 5.x (and above)
On firmware version 5.x (and above), to downgrade your eWON:
- the firmware file “ewonfwr.edf” need to be renamed in “dewonfwr.edf” (note the leading ‘d’)
- copy this dewonfwr.edf on the eWON root directory by FTP.
Note: You need to rename the ewonfwr.edf file only for downgrading !
Service release firmware versions are not considered as downgrade.
Examples:
5.0 is lower than 5.1
5.0 S4 is not lower thant 5.0 S7 (Service release on the same firmware version 5.0)
4.3 is lower than 5.0
The download operation is slightly diffrent: when the flashing operation starts, the led will first flash red – green – off repetitively, then the normal
flashing sequence with red flash will start.
The first operation consists in a complete memory erasure.
Important : This downgrade erases ALL eWON configuration files (comcfg.txt too) !
The eWON IP address return to 10.0.0.53 and modem parameters return to default.
Never do a downgrade from a 5.x firmware version remotely !
So please backup the txt config version, comcfg, and /usr data before downgrading.