After looking through this: hologram-tools/nova410update.py at master · hologram-io/hologram-tools · GitHub
I found the following two links depending on current FW version:
https://ublox-firmware.s3.amazonaws.com/L0506A0201-to-L0508A0204.zip
https://ublox-firmware.s3.amazonaws.com/L0506A0200-to-L0508A0204.zip
The readme files explain all of the different .bin versions:
Installing FW from L05.06A02.01 to L05.08A02.04
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Update packages sets:
Package set #0, it will update >99% of the units
Use this set first
0bb_stg1_pkg1_0m_L56A0201_to_L58A0204.bin
0bb_stg1_pkg2_4m_L56A0201_to_L58A0204.bin
0bb_stg1_pkg3_8m_L56A0201_to_L58A0204.bin
0bb_stg2_L56A0201_to_L58A0204.bin
Package set #1, use it if set #0 set fails to update
This set is for devices with 1 Bad block of memory in FOTA partition header
1bb_stg1_pkg1_0m_L56A0201_to_L58A0204.bin
1bb_stg1_pkg2_4m_L56A0201_to_L58A0204.bin
1bb_stg1_pkg3_8m_L56A0201_to_L58A0204.bin
1bb_stg2_L56A0201_to_L58A0204.bin
Package set #2, use it if set #0 set fails to update
This set is for devices with 2 Bad block of memory in FOTA partition header
Having to use this set should be relatively very rare
2bb_stg1_pkg1_0m_L56A0201_to_L58A0204.bin
2bb_stg1_pkg2_4m_L56A0201_to_L58A0204.bin
2bb_stg1_pkg3_8m_L56A0201_to_L58A0204.bin
2bb_stg2_L56A0201_to_L58A0204.bin
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Instructions
Step 1 : AT+UFWUPD=3, AT+UDWNFILE, to FOAT package into module, or +UFTPC for FTP
Send stg1 pkg1_0m if 0-4 months
OR
Send stg1 pkg2_4m if 4-8 months, 12 - 16 months,20 - 24 months
OR
Send stg1 pkg3_8m if 8-12 months, 16 - 20 months, 24 - 28 months
OK
Step 2 : AT+UFWINSTALL
OK
Step 3 : AT+UFWSTATUS?
+UFWSTATUS: 55436f6d, c8, 0
• After install look for this code below to indicate successful install
• 55436F6D flag means Update has successfully completed ( other flags are listed below )
• If you see a 55457272, it means the Update encountered an error
• C8 error_code means Update Success, Any other value means it failed.
• 0 failure_reason means Operation executed Successfully, any other value means it failed.
• If it failed and see +UFWSTATUS: 55457272, 19a, ffe3, then you need to go back to Step 1 and try another stg1 boot package.
• If it failed with 55457272, 19a, ffed then go back to Step1 and try the next set of Bad Block package set (#1 or #2)
• If you see a success code, then proceed to step 4.
OK
Step 4 : AT+UFWUPD=3, AT+UDWNFILE, to FOAT package into module, or +UFTPC for FTP
Send stg2 pkg
Step 5 : AT+UFWINSTALL
It will take up to 21min to install.
Step 6 : Check FW installed properly with ATI9 and/or ATI
ati9
L0.0.00.00.05.08,A.02.04