We have 2x Mitel System running on firmware version 4.0. Can we upgrade the firmware to 6.0 ourselves? Thanks. We do not want to renew our Maintenance with our Vendor servicing the unit.
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We have 2x Mitel System running on firmware version 4.0. Can we upgrade the firmware to 6.0 ourselves? Thanks. We do not want to renew our Maintenance with our Vendor servicing the unit.