I'm getting (on a Kindle DXG):
111129:181417 system: I _otaupexec:def

rocessing update /mnt/us/Update_525120101-611680021.bin
111129:181417 system: I _otaupexec:def:version is "FC02"
111129:181445 system: I _otaupexec:def:update image checksum OK
111129:181521 system: I mntroot:def:Making root filesystem writeable
111129:181521 EXT3 FS on mmcblk0p1, internal journal
111129:181521 webupdate: I def:webupdate::hop path:
111129:181521 webupdate: C def:webupdate::update path for device (05/576290015) does not exist
111129:181523 system: E _otaupexec:def:image update failed
111129:181525 system: E S50updater:def:OTA update failed (1)
111129:181525 system: I S50updater:def

eleting OTA bundle file "/mnt/us/Update_525120101-611680021.bin"
I'm using:
111129:181547 cvm[19038]: I VersionManagerImpl:SoftwareVersion:base=System Software Version_ 015-S2-057629,pretty=Kindle 3.2.1 (576290015),ota=576290015: