Conditions when device operation is prohibited
Introduction
From evaluation branch 03.27.16.Rev.XX and also from 04.00.00.Rev.XX base firmware version conditions are enabled to prevent device from operating when it is being used in restricted countries.
In figure 1 block diagram of logic is presented below:
Description
Device Blocking
Device will automatically stop operating when conditions will be met. All of the parameters are hardcoded and cannot be changed.
1. Device starts connect to operator with restricted Mobile Country Code (MCC). Not-Allowed operator list contains MCCs:
250 - Russian Federation 257 - Belarus 432 - Iran 368 - Cuba 467 - North Korea
2. Device is connected to operator with restricted MCC for full 28 days.
Device saves a timestamp when it should stop operating (Current timestamp + 28 days).
The device tracks the duration of connection to operators with restricted MCCs for compliance purposes. If the device disconnects from a restricted operator, a 7-day non-connection period is required to reset this counter. For instance, if the device spends 10 days connected to a restricted operator, then disconnects, and reconnects only after 5 days, the 7-day reset period is not met. Consequently, the counter does not reset but continues from the 10-day mark. If the total connected time reaches a specific limit, such as 28 days, the device will automatically stop operating to enforce compliance as it is shown in figure 1.
Device Unblocking
To unblock the device, as depicted in figure 1 flowchart, the device must maintain a continuous connection to operators with non-restricted MCCs for a full 7 days. Additionally, the device must have an active time synchronization and an inserted SIM card. If the device connects to a restricted operator MCC during this period, the unblocking counter resets.
Operating Device in Blocked State
| Blocked Features | Description |
|---|---|
| Record saving | Device will stop saving periodic and eventual records. Prior to device blocking saved records will not be lost. |
| Record sending | Device will not send any records to server. Prior saved records will be stored and sent once device is unblocked. |
| Periodic scenario update | Various features will be stopped:
|
| Sleep (Power Update) | Sleep feature will be disabled as well as Charger update, OBD plug out notify and OBD unlocker. Since these tasks runs under Power Update task which is responsible for sleep. |
| Accelerometer | Accelerometer reading will be stopped and accelerometer should not be initialized |
| IO element updating | IO element values will not be updated |
| Accelerometer related scenarios | Movement detection, crash detection etc. |
| BLE Sensors updating | Updating of BLE sensors will be stopped |
Firmware Upgrade/Downgrade Rules
Firmware branches have specific restrictions:
- Firmware Branch 03.27.16
- When a device is updated to 03.27.16.Rev.00 or a newer revision of this branch:
1. Downgrade to a version below 03.27.16.Rev.00 is not allowed
2. Upgrades to newer revisions of 03.27.16 is allowed
3. Upgrades to other firmware branches other than 03.27.16.Rev.XX and 04.00.00.Rev.XX is not allowed
- Firmware Branch 04.00.00
- When a device is updated to 04.00.00.Rev.00 or a newer revision of this branch:
1. Downgrade to a version below 04.00.00.Rev.00 is not allowed
2. Upgrades to newer versions than 04.00.00.Rev.00 is allowed
- Firmware Upgrading Between Branches
- Upgrading from branch 03.27.16 to branch 04.00.00 can only be done using the specific intermediate version:
- From 03.27.16.Rev.02 to 04.00.00.Rev.XX
Pass through command
In order to allow client to know the location of the vehicle in special cases, pass through for single command has been implemented. SMS/GPRS command “getgps” will be allowed to be sent every 10 minutes to get location of the device, when it is operating in Blocked state.