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Community Member

1721 - TFTP Upgrade Issue

hey all, i have a weird issue, the router shows that it has 32M of space but anytime we try to tftp an image, it complains that it has "(No space left on device)" we tried about 10 images but none work. i know there is a small trick somewhere. any help is appreciated. thanks a lot.

we also noticed a low voltage error message - am wondering if that is the root cause.

%Error: Low Programming Voltage Detected in System flash

%Error: System flash location 0x61FC004A - wrote 0x8358 , read 0xFFFF



Directory of flash:/

No files in directory

33554428 bytes total (33554428 bytes free)

HNL-1#sh file sy

File Systems:

Size(b) Free(b) Type Flags Prefixes

- - opaque rw system:

29688 27790 nvram rw nvram:

- - opaque rw null:

- - opaque ro xmodem:

- - opaque ro ymodem:

- - network rw tftp:

- - network rw snmp:

* 33554428 33554428 flash rw flash:

- - network rw rcp:

- - network rw ftp:

- - opaque ro cns:


Address or name of remote host []?

Source filename [c1700-bk9no3r2sy7-mz.123-26.bin]? c1700-o3y-mz.122-8.TPC10c.bin

Destination filename [c1700-o3y-mz.122-8.TPC10c.bin]?

Accessing tftp://

Erase flash: before copying? [confirm]

Erasing the flash filesystem will remove all files! Continue? [confirm]

Erasing device... eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee ...erased

%Error: Low Programming Voltage Detected in System flash

%Error: System flash location 0x61FC004A - wrote 0x8358 , read 0xFFFF

Erase of flash: complete

Loading c1700-o3y-mz.122-8.TPC10c.bin from (via FastEthernet0): !

%Error copying flash:c1700-o3y-mz.122-8.TPC10c.bin (No space left on device)


Hall of Fame Super Silver

Re: 1721 - TFTP Upgrade Issue

Hello Robert,

>> %Error: Low Programming Voltage Detected in System flash

this message appears multiple times

I'm afraid it is telling it is not able to really write or erase in this case on the flash a minimum voltage is needed and it says it is under the threshold.

It makes me think the flash can be defective or not well inserted.

I would power off ,open the device and check if it is well inserted

Hope to help


Community Member

Re: 1721 - TFTP Upgrade Issue

yep, was hoping there was something else we can do. reseated the flash with no luck either. i guess this is heading to the recycling bin. thanks, robert.

Hall of Fame Super Gold

Re: 1721 - TFTP Upgrade Issue

Errrr ... reseat? The 1720 series router's flash are all internal DIMM/SIMM chips. It's the 1760 that has a removable compact flash slot.

I hope I'm wrong here but I believe that the unit is about to die.

Community Member

Re: 1721 - TFTP Upgrade Issue

the 1760 does not have a compact flash slot. anyway, let's not get off topic.

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