Hi ztm,
thanks for your feedback especially the tip with the AUX button. Concerning the 128 it was indeed a typo. I meant the not 128 but 192. Sorry for the confusion. I tried what you suggested but that didn’t help.
1.Reformatting uSD with FAT16
After inserting the reformatted uSD in the TM40 and restarting the TM40 it creates some folders (PHOTO, PLANS, TM40). PHOTO and PLANS are completely empty. The TM40 folder contains the subfolder LABEL, PLANS, SKIN and two files 000D.FLS and ERR1.LOG. The ERR1.LOG contains an entry: Error Reading from Memory Error ID: 29. The subfolders are also empty except of the LABEL folder.
2. Next I downloaded the default content (Archives -> Digiplex -> TM40 -> Micro SD contents) and unzipped it to the uSD. The zip is 148MB in size and already contains the v1.25 PUF. After restarting the TM40 the display shows again:
Error#: 000000
The firmware (V1.21.008) requires an upgraded language/PSK. Copy the latest language file to the micro-SD card (PSK V.1.20.009 or higher). The unit will automatically load the file after inserting the SD card.
Do you have any other ideas?
Thanks in advance and kind regards
willi