I figure out the problem- 256 MB DRAM card maybe was faulted-- I was in the process to install more flash and more RAM - I change 3-4 compact flash cards- the same problem ,but when I remove the RAM card - the router booted normally
I tried to put the faulted card on different 1841 router and had the same problem including some ASCII code
I see you suggested to go in ROMMON mode- but the router even doesn't go to ROMMON mode
Anyway the problem is resolved and THANK you very much for your resonse
For other people with this or similar problem - check your DRAM card if you have one installed
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