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Firmware · 2024-01-12

Uniden SDS100 firmware 1.03.04 sub / 1.23.03A main (Motorola Type II test)

Verified — manufacturer file

Download zip (4.2 MB) Manufacturer's page ↗

Test sub firmware 1.03.04 plus an optional diagnostic main 1.23.03A, issued by Uniden on 12 January 2024 for the Motorola Type II investigation. Per Uniden's readme, 1.03.04 reverts the FS-counter reset conditions to the pre-Waterfall method; 1.23.03A shows which demodulator (IQ or 4FSK) is in use when the scanner is powered on while holding AVOID. The package also carries the public main 1.23.03 and sub 1.03.02 for going back.

Read before installing. TEST BUILD - superseded by public sub 1.03.05 (19 January 2024). Not compatible with main 1.21.00 or older. Sentinel cannot overwrite these versions; revert manually with the included public files. This package is the only located file source of public main 1.23.03.
Product
SDS100 firmware
Version
1.03.04 sub / 1.23.03A main (Motorola Type II test)
Released
2024-01-12
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
5e85420a406a71b5e4f4154fc1b5da08ff080c68d83f2050c8816f8b1889350f

Contents

FileSizeSHA-256
SDS100 Motorola type 2 test sub V1.03.04.zip4.2 MB403c493aecb5c5b63a52588e36077783106d851525c229e45bc6a09dba141b9c
README.txtThese instructions
SHA256SUMSChecksums of the files above

Instructions

The complete README.txt included in the zip:

Uniden SDS100 firmware 1.03.04 sub / 1.23.03A main (Motorola Type II test)
==========================================================================

WHAT THIS IS
Test sub firmware 1.03.04 plus an optional diagnostic main 1.23.03A, issued by
Uniden on 12 January 2024 for the Motorola Type II investigation. Per Uniden's
readme, 1.03.04 reverts the FS-counter reset conditions to the pre-Waterfall
method; 1.23.03A shows which demodulator (IQ or 4FSK) is in use when the
scanner is powered on while holding AVOID. The package also carries the public
main 1.23.03 and sub 1.03.02 for going back.

IMPORTANT: TEST BUILD - superseded by public sub 1.03.05 (19 January 2024).
Not compatible with main 1.21.00 or older. Sentinel cannot overwrite these
versions; revert manually with the included public files. This package is the
only located file source of public main 1.23.03.

This is a TEST build that Uniden distributed during a fault investigation. It
is kept for the record; a scanner should run the current public release.

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).
  - Main firmware newer than 1.21.00 (Uniden: the test sub is not compatible
    with main 1.21.00 or older).

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

  SDS100 Motorola type 2 test sub V1.03.04.zip  (4450060 bytes)
    SHA-256 403c493aecb5c5b63a52588e36077783106d851525c229e45bc6a09dba141b9c

  Inside SDS100 Motorola type 2 test sub V1.03.04.zip:
    Readme SDS100 Sub Motorola type 2 test V1_03_04.txt
      Uniden's own instructions
      3587 bytes
      SHA-256 ed1a4158de20de9a9b5584c8f5304138329b02f8689e97930736a67a100634bf
    SDS100 Public latest versions/SDS-100_V1_23_03.bin
      public main firmware 1.23.03 (28 Dec 2023), for going back
      2162688 bytes
      SHA-256 2843c1850a87bf06ae5b6fea6e1a4e73a3eeecdc666a80c54f7d42b0891e69d1
    SDS100 Public latest versions/SDS-100-SUB_V1_03_02.firm
      public sub firmware 1.03.02, for going back
      88816 bytes
      SHA-256 01cc450f9633c33e3c3a99a19c33adac1f570b983431af9304a7fc9a02930dcf
    SDS-100_V1_23_03A.bin
      optional diagnostic main firmware 1.23.03A
      2162688 bytes
      SHA-256 526d3056c6fa74b418c161aab3c367a8f69932ffa26c20b944a570929ba31f16
    SDS-100-SUB_V1_03_04.firm
      test sub-processor firmware 1.03.04
      88848 bytes
      SHA-256 b7997373db4b41b79e84043606a92ecbaab2d4fcbbbe266ea2a597763a56bd06

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 and copy the test sub file
     SDS-100-SUB_V1_03_04.firm (and, optionally, SDS-100_V1_23_03A.bin) into
     the "firmware" folder. Only one main (.bin) and one sub (.firm) file may
     be in the folder at a time; with several versions present the update will
     not start or will load incorrectly.
  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
Uniden's readme: Sentinel cannot overwrite this test version because its
number is higher than the version on Uniden's server. To go back, copy the
public files included in this package the same way. A later public release
(sub 1.03.05 or newer, installed by Sentinel) also replaces it.

PROVENANCE
  - Official source:
    https://info.uniden.com/twiki/pub/UnidenMan4/SDS100FirmwareUpdate/SDS100%20Motorola%20type%202%20test%20sub%20V1.03.04.zip
  - Listed on:
    https://info.uniden.com/twiki/bin/view/UnidenMan4/SDS100FirmwareUpdate
  - Wayback copy: none captured
  - Retrieved: 2026-09-18. Status: verified (downloaded from Uniden's own
    server).

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
  - RadioReference thread on the Motorola Type II test builds:
    https://forums.radioreference.com/threads/sds-100-200-motorola-type-ii-public-beta.467806/

Other versions of SDS100 firmware

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