SOFTWARE-DELIVERED DYNAMIC PERSISTENT DATA

• US 20070245337A1
• Filed: 04/13/2007
• Published: 10/18/2007
• Est. Priority Date: 01/27/2004
• Status: Active Grant

• Current Assignee: Malikie Innovations Limited (Key Patent Innovations Limited)
• Original Assignee: Blackberry Limited
• Inventors: Willis, Edward
• Granted Patent: US 8,677,341 B2
• Time in Patent Office: Days
• US Class Current: 717/168
• CPC Class Codes: G06F 8/65 Updates security arrangements therefor G06F21/57
• CPC Class Codes: H04W 8/245 from a network towards a terminal

Abstract

A method and apparatus for dynamically managing non-volatile memory items in a wireless device, the method comprising the steps of: checking the non-volatile memory items for a unique identifier item; if the unique identifier item exists, comparing an identifier stored within the unique identifier item with a software identifier located in software on the wireless device; and if the unique identifier item does not exist or if the identifier is different from the software identifier, performing the steps of: updating the non-volatile memory items; and writing the software identifier to the unique identifier item. The method may further include a rollback scheme for previous software versions.

Claims

1. A method to provide for rollback to a previous software load on a mobile device, the previous software load utilizing non-volatile memory item values stored in the previous software load, the method comprising the steps of:

adding, when upgrading to a new software load, a new non-volatile memory item rather than replacing a value in an existing non-volatile memory item; and

preventing deletion of any non-volatile memory items once said non-volatile memory items are created,

wherein the adding step and preventing step allow the utilization of non-volatile memory items and non-volatile memory item values from the previous software load when rolling back to the previous software load.

2. The method of claim 1, wherein said method further comprises the steps of avoiding non-volatile memory items created by default or refurbished non-volatile memory files.

3. The method of claim 2, further comprising the step of creating a new non-volatile memory item to replace non-volatile memory items created by default or part of the refurbished non-volatile memory files.

4. The method of claim 3, further comprising the step of barring use of non-volatile memory items created by default or refurbished non-volatile memory files

5. The method of claim 1, further comprising the step of mapping requests for a non-volatile memory item to a correct non-volatile memory item.

6. The method of claim 5, wherein the mapping step is based on a map that is changed in the new software load.

7. The method of claim 6, wherein the requests for a non-volatile memory item are mapped from a non-volatile memory item number or non-volatile memory item index to a correct non-volatile memory item number.

8. A wireless communications device comprising:

a receiver for receiving signals;

a transmitter for transmitting signals;

a digital signal processor for processing signals to be sent on said transmitter and received on said receiver;

a processor communicating with said digital signal processor;

non-volatile memory having program storages and non-volatile memory items, said non-volatile memory communicating with said processor; and

input and output subsystems interacting with said processor,

wherein said processor includes means for adding, when upgrading to a new software load, a new non-volatile memory item rather than replacing a value in an existing non-volatile memory item and means for preventing deletion of any non-volatile memory items once said non-volatile memory items are created, the means for adding and preventing adapted to allow the utilization of non-volatile memory items and non-volatile memory item values from a previous software load when rolling back to the previous software load.

9. The wireless communications device of claim 8, further comprising means for avoiding non-volatile memory items created by default or refurbished non-volatile memory files.

10. The wireless communications device of claim 9, further comprising means for creating a new non-volatile memory item to replace non-volatile memory items created by default or part of the refurbished non-volatile memory files.

11. The wireless communications device of claim 10, further comprising means for barring use of non-volatile memory items created by default or refurbished non-volatile memory files

12. The wireless communications device of claim 8, further comprising a map adapted to mapping requests for a non-volatile memory item to a correct non-volatile memory item.

13. The wireless communications device of claim 12, wherein the map is changed in the new software load.

14. The wireless communications device of claim 13, wherein map is adapted to map the requests for a non-volatile memory item from a non-volatile memory item number or non-volatile memory item index to a correct non-volatile memory item number.