Unable to upload SysEx to my 2nd Shruthi

I have built a 2nd Shruthi (an XT) shortly after my first Shruthi (a classic) last month)
On this XT unit, everything works, MIDI IN works, but I am not able to uplpoad the “factory_data.syx” file…
I see a small “#” on screen when I start sending the sysex, but no presets are loaded…
On the other Shruthi I had no problem whatsoever in uploading the 128 patches…
Before I try to swap the EEPROMs between units (coudl it be a corrupted EEPROM?) do you have any other idea or suggestion ?
thanks

Could be the MIDI interface, the optocoupler part or the eeprom.
If you are using C6 from Elektron, than try with a longer Delay setting (up to 100ms).

tomorrow I will try swapping the EEPROM between my (working) Shruthi Classic and the XT
The MIDI Intefcare is excatly the same, I know it’s one of those cheap USB-MIDI interfaces but it worked on the Shruthi Classic…so…but I can try another MIDI interface…
I have used both Sysex Librarian and C6 ( I am on Mac)…alwasy the same results…