UCM 7.054, 7.056 (beta)

[juwi_uk]

Oh my mistake.  I understand the eeprom I mentioned is 256K bits not bytes. 

That said couldn\'t you save part of the firmware to U3 (ie the download/upload code part),  then if you had similar in future you could get the customer to set memory address xxxx as 1 and restart and it would at least allow a new firmware to be uploaded.

[ident]

Unfortunately that solution would not work in the current situation, as the firmware will not even operate so it would not be able to read the eeprom

[tman]

[user=876]juwi_uk[/user] wrote:

Oh my mistake.  I understand the eeprom I mentioned is 256K bits not bytes. 

That said couldn\'t you save part of the firmware to U3 (ie the download/upload code part),  then if you had similar in future you could get the customer to set memory address xxxx as 1 and restart and it would at least allow a new firmware to be uploaded.

A neater solution for the general UCM would be to have just enough code inside a protected bootloader that never gets reflashed to accept a UCM firmware over the USB/Ethernet/RS232 port. The PC interface is just serial from the point of view of the UCM uC so the actual module attached doesn\'t affect anything.

The bootloader would only be capable of loading a new firmware and running whatever is in flash. You\'d trigger recovery mode by doing something unusual like plugging in the UCM whilst some odd combination of jumpers is shorted or holding down a button. As the bootloader always runs first then you should be able to recover from a bad flash assuming it hasn\'t affected the bootloader itself.

[tman]

If you\'re in the UK and the UCM was purchased from us (laser.com/cbus-shop.co.uk) then we\'ll be happy to reflash it with 7.056 and return it free of charge. You will need to ship it to us at your own cost.

If you\'re in the UK but didn\'t purchase the UCM from us then there will be a £5 return shipping fee. You will need to ship it to us at your own cost.

Return shipping would be via Royal Mail 1st class so untracked. If tracking is required then it would be an extra cost.

For shipping costs for other countries or if you need the UCM reflashed, email support@laser.com with the country if applicable and UCM serial number.

[ident]

Thanks for the offer to upgrade the firmware for customers

Your suggestion is good. The bootloader should be left in the flash during upgrade