41Figure 5-19: Upgrade5.4.2.1 Upgrade FirmwareRefer to Figure 5-19, and follow the steps below to upgrade the version of eNB firmware.1. From the Baicells website or OMC, download the file with the new version of firmwareand save it to a local computer. Be sure the file you select is appropriate for the modelof Neutrino eNB being upgraded, e.g., either for FDD or TDD operation.2. In the eNB GUI, go to System > Upgrade.3. If you want to retain the current configuration settings on the eNB, click on the checkbox next to the Attempt to preserve settings field. Otherwise, select Do not PreserveSettings (.IMG) or Upgrade Template (.zip) to reset the eNB to its default configurationor the template settings, respectively.4. Click on Select File to select the new firmware file.5. Click on Upload to upload the firmware file to the eNB.6. Verify the firmware version you uploaded is correct, and then click on Update Now.7. In the pop-up window, click on PROCEED.Wait for about 3 minutes while the eNB reboots.Caution: The reboot action will disrupt eNB service.The new version of firmware will appear on the Basic Setting > Basic Info page underSoftware Version.5.4.2.2 Version RollbackRefer to Figure 5-19, and follow the steps below to downgrade (roll back) the eNB firmware.NOTE 1: Only one rollback operation is allowed for each upgrade. Under the rollbackpermission of the eNB, the firmware can roll back to the version that was installedbefore the last upgrade. After the rollback, a new rollback will not be permitteduntil an upgrade has taken place.NOTE 2: If the previous version is “-”, there is no software version for rollback.
