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Firmware · 2023-12

Uniden SDS100 firmware 1.23.02 main / 1.03.02 sub

Verified — manufacturer file

Download zip (2.1 MB) Manufacturer's page ↗

Main firmware 1.23.02 with sub firmware 1.03.02, from the first Waterfall-capable generation (sub 1.03.02 / main 1.23.01, 21 December 2023). Main 1.23.02 does not appear in Uniden's change log, which goes from 1.23.01 (21 Dec 2023) to 1.23.03 (28 Dec 2023); the .bin inside is dated 27 December 2023.

Read before installing. Manual-install package posted by Uniden on 3 January 2024. Moving up from 1.21.00 requires both files; moving down from 1.23.03 needs only the main file.
Product
SDS100 firmware
Version
1.23.02 main / 1.03.02 sub
Released
2023-12
Runs on
Any PC that can copy files to a USB mass-storage device (Uniden's steps use Windows Explorer)
Applies to
Uniden SDS100
Zip SHA-256
61d5fb82362fc283adcc461c09b12a4893a7123016db3d01dccbbfea50ef50d8

Contents

FileSizeSHA-256
SDS100 V1.23.02 Main V1.03.02 Sub.zip2.1 MBedc3f70b73f928e5fa88ed7430e6980ff661102d82b7082edd3751f7d577a7c6
README.txtThese instructions
SHA256SUMSChecksums of the files above

Instructions

The complete README.txt included in the zip:

Uniden SDS100 firmware 1.23.02 main / 1.03.02 sub
=================================================

WHAT THIS IS
Main firmware 1.23.02 with sub firmware 1.03.02, from the first
Waterfall-capable generation (sub 1.03.02 / main 1.23.01, 21 December 2023).
Main 1.23.02 does not appear in Uniden's change log, which goes from 1.23.01
(21 Dec 2023) to 1.23.03 (28 Dec 2023); the .bin inside is dated 27 December
2023.

IMPORTANT: Manual-install package posted by Uniden on 3 January 2024. Moving
up from 1.21.00 requires both files; moving down from 1.23.03 needs only the
main file.

Uniden normally delivers firmware only through Sentinel (UPDATE -> Update
Firmware), which always installs the newest version. Uniden published this
package on its change-log page so that owners can install this specific
version by hand - in practice, to go back to it. To bring a scanner up to
date, use Sentinel instead.

APPLIES TO
The Uniden SDS100 (US model) only. Every firmware file carries the model name
(SDS-100_...). Do not use it on the SDS200, SDS150, BCD436HP or BCD536HP. The
European SDS100E uses separately named firmware files (e.g.
SDS100E_V1_23_09.bin, per RadioReference owners) and must not be given these
files.

BEFORE STARTING
  - A Windows PC. Uniden's instructions use Windows Explorer; the scanner
    appears as an ordinary removable disk.
  - The mini-USB data cable, in the mini-USB port on the side of the scanner
    (the one marked Charge, not the micro-USB port).
  - A fully charged battery (Uniden's readme asks for this), or the scanner on
    USB charge.
  - A backup: copy the whole microSD card to the PC and save the Favorites
    Lists in Sentinel first (Uniden's readme asks for both).

CONTENTS OF THIS ZIP
The download zip holds the vendor file exactly as Uniden published it, plus
this README.txt and SHA256SUMS.

  SDS100 V1.23.02 Main V1.03.02 Sub.zip  (2225379 bytes)
    SHA-256 edc3f70b73f928e5fa88ed7430e6980ff661102d82b7082edd3751f7d577a7c6

  Inside SDS100 V1.23.02 Main V1.03.02 Sub.zip:
    Readme SDS100 V1_23_02.txt
      Uniden's own instructions (downgrade/upgrade to 1.23.02)
      2989 bytes
      SHA-256 456d6917642bc677bcd12ca277c6cdc872b893d239ec1aae9d2340a9af5b9888
    SDS-100_V1_23_02.bin
      main (CPU) firmware 1.23.02
      2162688 bytes
      SHA-256 ca1db367b098943fc8fb5c5bcdc9b1884df3132ee40543a661bc9a6c6b04fbd4
    SDS-100-SUB_V1_03_02.firm
      sub-processor firmware 1.03.02
      88816 bytes
      SHA-256 01cc450f9633c33e3c3a99a19c33adac1f570b983431af9304a7fc9a02930dcf

INSTALLATION
  1. Turn the scanner on.
  2. Connect it to the PC with the USB cable. The scanner shows "USB Cable
     Detected / Select USB mode" with "Mass Storage = E" and "Serial Port =
     .".
  3. Press E (Yes) to choose Mass Storage. The scanner shows "USB Mass
     Storage".
  4. In Windows Explorer, open the new removable disk, then the "BCDx36HP"
     folder, then its "firmware" folder. It already holds CitiTable_V00_00.dat
     and ZipTable_V00_00.dat - do not touch or delete them.
  5. Unzip the download on the PC. Coming DOWN from main 1.23.03: copy only
     SDS-100_V1_23_02.bin into the "firmware" folder. Coming UP from 1.21.00:
     copy both SDS-100_V1_23_02.bin and SDS-100-SUB_V1_03_02.firm. Only one
     main (.bin) and one sub (.firm) file may be in the folder at a time.
  6. Restart the scanner ("reset the power", in Uniden's words). The update
     starts automatically as it boots. Do not turn the scanner off until the
     update has finished.
  7. When it has finished, the scanner deletes the firmware file(s) from the
     "firmware" folder by itself.

VERIFYING
Menu -> Settings -> See Scanner Information -> Firmware Version shows the main
and sub versions now installed. The firmware file(s) will also have gone from
the card's "firmware" folder.

IF SOMETHING GOES WRONG
  - Update did not start: check that only one main and one sub file are in the
    "firmware" folder and that the file names are exactly as supplied.
  - Scanner will not start properly after files were deleted from the
    "firmware" folder: the two .dat files were probably removed. Uniden's
    remedy is Sentinel -> Clear User Data, which rebuilds the card but erases
    all user data (hence the backup).
  - USB connection fails or is slow: take the microSD card out and use a card
    reader; Sentinel can work on the card directly (see Vol 5 on this site).
    The same folder layout applies.
  - Card errors: back up what is readable, format the card with the SD
    Association's SD Memory Card Formatter (cards up to 32 GB), run Sentinel
    -> Clear User Data, then Update Firmware.
  - Uniden does not document a recovery procedure for an update interrupted by
    power loss; this could not be confirmed from any source. Uniden's readme
    closes with "Please use these files on your risk."

DOWNGRADING
This package exists for going back: Uniden's readme covers moving from 1.23.03
(main file only) or 1.21.00 (main and sub files). To return to the current
version afterwards, run Sentinel -> UPDATE -> Update Firmware.

PROVENANCE
  - Official source:
    https://info.uniden.com/twiki/pub/UnidenMan4/SDS100FirmwareUpdate/SDS100%20V1.23.02%20Main%20V1.03.02%20Sub.zip
  - Listed on:
    https://info.uniden.com/twiki/bin/view/UnidenMan4/SDS100FirmwareUpdate
  - Wayback copy:
    https://web.archive.org/web/20260101195714/https://info.uniden.com/twiki/pub/UnidenMan4/SDS100FirmwareUpdate/SDS100%20V1.23.02%20Main%20V1.03.02%20Sub.zip
  - Retrieved: 2026-09-18. Status: verified (downloaded from Uniden's own
    server; SHA-1 matches the Wayback capture).

MORE INFORMATION
  - scanners.fubsypoly.com, Uniden SDS100 - Vol 5, Upgrades & Firmware:
    https://scanners.fubsypoly.com/uniden-sds100/vol-5/
  - Reference Library, SDS100 Owner's Manual:
    https://scanners.fubsypoly.com/library/uniden-sds100-original-manual/
  - Reference Library, Easier to Read SDS100/SDS200 Manual:
    https://scanners.fubsypoly.com/library/easier-to-read-sds100-200-manual/
  - Uniden change log:
    https://info.uniden.com/twiki/bin/view/UnidenMan4/SDS100FirmwareUpdate

Other versions of SDS100 firmware

← All Uniden SDS100 downloads