I had a tech try to flash this phone to SIP 8.11 from SCCP and they must have done something wrong, because the phone goes from configuring VLAN to TFTP error (0A in little letters next to it) and hangs. The tech said they did a restore default settings with wipe network info prior to it being in this state. Is there a relatively easy way to unbrick it to where the firmware could be reflashed? The phone does not allow any interaction with the menus. This may need to be treated as a failed firmware upgrade. Solutions and suggestions would be greatly appreciated.