Appendix G: Updating Firmware

General Information

To upgrade the integrated software, EM-486 uses files EM486FW1.FUS, EM486FW2.FUS or EM486FW3.FUS from folder UPGRADES located on SD memory card, formatted in the FAT or FAT32 format. Updating these files may be held in a special update mode of firmware.

Transmitting the EM-486 Updating Files

To transfer the update files, it is possible in two ways:

1. Record files to SD card on a personal computer or other external device and put the card into the EM-486, then enter the upgrade mode of the firmware, as shown in the table below;
2. If updating via the WEB interface is allowed in the parameter’s settings, on the “Other” tab (see section 5.3.3 of the manual) - go to the “Files” tab, select the transition to “Firmware update”, select the file and click the “Upload file”. The file will be written to the “UPGRADES” folder named “EM486FW2.FUS”. Then press the “Program” button. Wait for the update (3-4 minutes).

Firmware Updating Mode

The device can be set in mode of firmware updating after power supply and restart. The setting in that mode is made automatically (at updating via WEB-interface or at update failure) or manually (at the button “R” being pressed during a startup).

Entering the Mode of Software Updating

№	Step	Button “R”	Display	Time	Remark
1	Initialization	Pressed		0.5 s	To cancel the updating, release the button “R” at these steps
2	Stand-by	Pressed		1 s
3	Notification about entering in mode of updating	Pressed	Entering upgrade mode	5 s
4	Offer to enter the mode of updating	Pressed	To enter upgrade mode release button	2 s	To enter the mode of software updating, release the button “R” at this step
5	Protection against incidental pressing	Pressed	–	–	Holding the button pressed will cancel the firmware updating

Selection of Updating File

After manual entering in mode of updating, select the file of updating. To cancel the updating, cut off the power supply of EM-486 or wait until automatic completion of updating mode.

№	Step	Button “R”	Display	Time	Remark
1	Finding the available files		Searching for upgrade files…	(depends on the found files)
3	Notification about entering in mode of updating	released	Name and version of updating file	5 s	To select a file, press and release the button “R” at this step
4	Offering all files of updating	released	–	(depends on the found files)	Repeat the step 3 for each file
6	Repeated offer	released	–	(depends on time of step 4)	Repeat the steps 3–4 for 3 times
7	Protection against incidental entering in the mode of updating	released	–	–	The file cancelation cause the escape from the mode of firmware updating

Updating of Integrated Firmware

At automatic entering into the mode of firmware updating or at manual selection of file, the updating is made from the file.

№	Step	Button “R”	Display	Time	Remark
1	Start of updating	–	Upgrading Firmware	2–10 s
2	Updating the integrated software	–	(performance line shows the process of updating)	(depends on the file of updating)	Time until the end of process of updating is shown on the display
3	Updating is successfully completed	–	Firmware upgrade success	5 s
4	Startup of firmware	–	–	–

Error Codes

The errors detected during the updating process are shown on the display.

Caution

If there are critical errors during the updating mode the operation of the device is not possible. In this case the indication of a critical error is made during an hour, after that the device automatically restarts. If an error is as a result of incidental event, the integrated firmware will be restored from the file on the memory card.

Codes of Warning in Software Updating Mode

Code	Warning	Actions	Remarks
2	Integrated firmware cannot be started	Initialization of mode of emergency updating: Auto start of updating from the selected file or from the first available file (if any)	The warning is shown at selection of firmware updating in WEB-interface or as a result of other error and is automatically corrected with the help of available files of software updating
3	Error while current process of firmware updating	Similar to №2, but the file with an error has less priority	The error is automatically corrected with available files of updating
4	The files of updating are not available	Escape from the mode of updating, start of available integrated firmware	The device can continue operation but for reprogramming the file of updating should be loaded in the folder “UPGRADES” on the device SD memory card
5	Emergency mode – firmware cannot be started	Waiting for manual restart of device or restart automatically in 1 hour	The error is a result of three-time entering in emergency mode as a result of other errors. The correct file of firmware updating should be loaded in the folder “UPGRADES” on the SD memory card. If the error is repeated, contact the manufacturer
6	Emergency mode – error during the current firmware updating	Waiting for manual restart of device or restart automatically in 1 hour	The error is a result of three-time entering in emergency mode as a result of other errors. The correct file of firmware updating should be loaded in the folder “UPGRADES” on the SD memory card. If the error is repeated, contact the manufacturer
7	Unrecoverable error – no available files of updating, the integrated firmware cannot be started	Waiting for manual restart of device or restart automatically in 1 hour	The error is a result of three-time entering in emergency mode as a result of other errors. The correct file of firmware updating should be loaded in the folder “UPGRADES” on the SD memory card. If the error is repeated, contact the manufacturer