The following table represents which major firmware revisions we have available for each phone model.
v86 is required for cordless headsets.
v83 minimum requirement for TLS
|
Series |
Model |
v83 |
|||
|
T2 |
T19 E2 |
✓ |
|||
|
T21P E2 |
✓ |
||||
|
T23G |
✓ |
||||
|
T27G |
✓ |
✓ |
✓ |
||
|
T29G |
✓ |
||||
|
T3 |
T30P |
✓ |
✓ |
||
|
T31P |
✓ |
✓ |
|||
|
T33G |
✓ |
✓ |
|||
|
T33P |
✓ |
✓ |
|||
|
T4 |
T41S |
✓ |
✓ |
✓ |
|
|
T42S |
✓ |
✓ |
✓ |
||
|
T46S |
✓ |
✓ |
✓ |
||
|
T48S |
✓ |
✓ |
✓ |
||
|
T42U |
✓ |
||||
|
T43U |
✓ |
||||
|
T46U |
✓ |
||||
|
T48U |
✓ |
||||
|
T41P |
✓ |
||||
|
T42G |
✓ |
||||
|
T46G |
✓ |
||||
|
T48G |
✓ |
||||
|
T5 |
T53W |
✓ |
✓ |
✓ |
|
|
T54W |
✓ |
✓ |
✓ |
||
|
T57W |
✓ |
✓ |
✓ |
||
|
T58A/V |
✓ |
✓ |
✓ |
||
|
VP59 |
✓* |
||||
|
DECT |
W53H |
✓ |
|||
|
W56H |
✓ |
✓ |
|||
|
W59R |
✓ |
||||
|
W60B |
✓ |
✓ |
* Cannot be downgraded after the upgrade.