The new firmware is great after some trouble I was able to instal it on my 800XL+U1MB+S3.
Thanx to FJC and tf_hh.
If you like stories about trouble, how to get over it, and what tf_hh has to do with it then you can read further.
The news about the new firmware arrived at my desk on late Sunday afternoon. Great time to try it imminently. I had downloaded everything and start flashing U1MB but the update progress indicator stops at „Erase“. I waited 1 minute, 3 minutes, 10 minutes, 15 minutes. All the time reading the bottom line: Do not reset or switch off the machine. Eventually I switched off the machine already knowing something really bad must be happen. I toke a deep breath and switch it on again. My worst worries came true: The dark red screen of death. What to do now? No booting, no prompt, just dark red. After the first shock I started to think. What could be broken? Usually I get the dark red screen if the main memory was bad. So maybe it just got broken during flashing? At this moment I reminded myself of a handy tool: SysCheck 2 (thanx to tf_hh). I mounted the board to the PBI and check the main memory. Everything OK. The main memory ist good! Light on the horizon. After RAM check the ROM check was done with error wrong check sum. OK, main memory is good but the flash memory of U1MB seems to be corrupted. How can I flash the U1MB if the flash memory is bad and the machine won’t boot? I switched the SysCheck to external OS via PBI. Eureka! The machine booted and was working. Next: How can I flash the U1MB? I just started UFLASH but received the error message that there is no extended memory. Ok, I thought by myself, the SysCheck has 512k extended memory via PBI. I also switched on the 512k extended memory of SysCheck. After restarting UFLASH it recognized the extended memory from SysCheck and the U1BM. Now I was able to select the flash slots and flashed the whole memory of U1MB. Everything went well now: Erase, Flash, Verify. Wow, I was happy! After flashing finished I crossed fingers and restarted the machine. Everything works as expected! Now I can enjoy the newest firmware by FJC with the help of tf_hh.
OK, this was my little Sunday afternoon story.
It is always nice to see great and robust software working!
Thanx to the whole community