HP41CL update

[Sylvain Cote]

Physical setup

1. plug serial cable in your 41CL
2. plug serial cable to your computer
   

Calculator should always be off when you plug/unplug the serial cable to/from the calculator.
You should also insert fresh batteries before doing a Flash update.

Note: it is important to physically connect your 41CL to your computer before doing the MMU configuration.
The reason is that sometime the MMU is deactivated when you plug or unplug the serial cable.
When that happen you just need to reactivate the MMU by executing the MMUEN command.

Configuring 41CL

Code:

Command       Description
------------  ---------------------------------------------------

Code:

MMUDIS        Disable memory management unit
MMUCLR        Clear MMU configuration
"YFNX"        41CL Extreme Functions ROM image identifier
PLUG1L        Map YFNS ROM image to page 8 (port 1 low page)
"YUPS"        41CL Update Functions ROM image identifier
PLUG1U        Map YUPS ROM image to page 9 (port 1 high page)

Code:

TURBO50       Activate 50x speed up    (optional)
SERINI        Initialise serial port   (optional)
BAUD48        Set port to 4800 bauds   (optional)
ON            Deactivate sleep mode    (optional)
CF 26         Deactivate sound         (optional)
MMUEN         Activate MMU configuration

CAT 2 should show the following

Code:

-TIME 3B
-CL TIME
-YFNX 4C
-SYS FNS
-SER FNS
-MISC FNS
UPDATE 4D
-EXT FCN 3B
-CL EXT FNC

Note: you may see different version for some ROMs but that is ok.

On the 41CL

Code:

Command       Description
------------  ---------------------------------------------------
FDBVER?       Get current FLDB version of your 41CL

The output is the FLDB date currently installed in your 41CL. Date format respect MDY/DMY mode.
Mine is 06/05/2022 for June 5th, 2022, yours will be somewhere in 2020.

Software & files needed before going further:

• Java 1.8+ must be installed on your computer (I use Temurin OpenJDK 17)
• clupdate 1.1.0 must be downloaded and unzippped (available here)
• latest rom_files must be downloaded (available here)
  

From the command line:

Code:

cd folder-where-clupdate-and-rom_files-are-located
java -jar clupdate-1.1.0.jar --update rom_files_220629.zip COMx 4800

You should see something like this on your computer: (I use a Mac so my serial port name is different than the ones on Windows)

Code:

hh:mm:ss --update   [fileName: rom_files_220629.zip] [portName: /dev/tty.usbserial-AQ01D0DE] [baudRate: 4800]
hh:mm:ss File       rom_files_220629.zip loading ... done
hh:mm:ss Serial     /dev/tty.usbserial-AQ01D0DE opened at 4800 baud.
hh:mm:ss Waiting    for 41CL commands ...

On the 41CL

Code:

Command       Description
------------  ---------------------------------------------------
CMOPEN        Open serial port

You should see something like this on your computer:

Code:

HH:MM:SS Received   OPEN_CHANNEL_REQUEST(0x41)
HH:MM:SS Sent       OPEN_CHANNEL_RESPONSE(0x42)

On the 41CL

Code:

Command       Description
------------  ---------------------------------------------------
CPONLY        Enable compare mode.
"*"           All Flash memory will be scanned
FLCHK?        Scan Flash ranged specified in ALPHA

On your computer, you should see the new FLDB ROM image being downloaded to your 41CL

Code:

HH:MM:SS Received   FLDB_8MB_IMPORT_REQUEST(0x47) [Page: 0x0DE] [BoardGeneration: third] [EstimatedFullScan: 02h 51m 18s]
HH:MM:SS File       [FileName: FLDB.ROM] [YCRC:0x06292022] [Rev: 2022-06-30]
HH:MM:SS Sending    8192 = 8192 bytes sent

Then, several lines of:

Code:

HH:MM:SS Received   KEEP_ALIVE(0x59))))))))))))))))))))))))))))))))
...
HH:MM:SS Received   KEEP_ALIVE(0x59))))))))))))))))))))))))))))))))

Then, the updated FLDB (called CFLDB) is being uploaded to your computer:

Code:

HH:MM:SS Received   CORR_FLDB_8MB_EXPORT_REQUEST(0x4F)
HH:MM:SS Sent       CORR_FLDB_8MB_EXPORT_RESPONSE(0x50)
HH:MM:SS Receiving  2183 2186 2186 1637 = 8192 bytes received
HH:MM:SS File       CFLDB.ROM saved

Finally, the diff report between your 41CL FLDB and the new FLDB (CFLDB):

Code:

HH:MM:SS Report     Outdated ROM images [BoardGeneration: third]
HH:MM:SS Report     EVAL_3K.ROM     [Page:0x0B7 ID:FRML Rev:2022-06-29 YCRC:0xFEA85C11]
HH:MM:SS Report     EVAL_APP.ROM    [Page:0x0B8 ID:FRMX Rev:2022-06-29 YCRC:0x91C0F69E]
HH:MM:SS Report     FLDB.ROM        [Page:0x0DE ID:FLDB Rev:2022-06-29 YCRC:0x06292022]
HH:MM:SS Report     IMDB.ROM        [Page:0x0DF ID:IMDB Rev:2022-06-23 YCRC:0x16F7EB60]
HH:MM:SS Report     XMTWIN.ROM      [Page:0x173 ID:XMTW Rev:2022-06-29 YCRC:0x8F1118C5]
HH:MM:SS Report     SMAT43.ROM      [Page:0x1A2 ID:SM44 Rev:2022-06-29 YCRC:0xC7FE7120]
HH:MM:SS Report     WARPB1.ROM      [Page:0x1B8 ID:WARP Rev:2022-06-29 YCRC:0x23F9223A]
HH:MM:SS Report     WARPB2.ROM      [Page:0x1B9 ID:WARP Rev:2022-06-29 YCRC:0x3869A14A]
HH:MM:SS Report     WARPB3.ROM      [Page:0x1BA ID:WARP Rev:2022-06-29 YCRC:0x9E92DDB3]
HH:MM:SS Report     XMEMXF.ROM      [Page:0x202 ID:XMXF Rev:2022-06-29 YCRC:0x407CDBAC]
HH:MM:SS Report     XMMTRX.ROM      [Page:0x203 ID:XMMA Rev:2022-06-29 YCRC:0x40F50C7D]
HH:MM:SS Report     XMPPC.ROM       [Page:0x204 ID:XMPP Rev:2022-06-29 YCRC:0x74968745]
HH:MM:SS Report     2022JUL.ROM     [Page:0x288 ID:CEPH Rev:2022-06-29 YCRC:0x18C5232A]
HH:MM:SS Report     2022JUN.ROM     [Page:0x289 ID:LEPH Rev:2022-06-29 YCRC:0x503081B1]
HH:MM:SS Report     14 outdated pages, out of 1024 pages, spread over 8 Flash blocks, estimated update time: 00h 26m 28s

Note 1: your list will be longer because your FLDB is older.
Note 2: the estimated update time above is pretty much what it will take to complete the update.

Now we do the actual update, on the 41CL

Code:

Command       Description
------------  ---------------------------------------------------
FLUPD         Update Flash Memory

On your computer, for each ROM being updated you will see something like this:

Code:

HH:MM:SS Received   PAGE_IMPORT_REQUEST(0x53) [Page:0x0B7]
HH:MM:SS Image      EVAL_3K.ROM     [Page:0x0B7 ID:FRML Rev:2022-06-29 YCRC:0xFEA85C11]
HH:MM:SS Sending    8192 = 8192 bytes sent

The update will go on until you see "UPD DONE" on your 41CL.

On the 41CL type:

Code:

Command       Description
------------  ---------------------------------------------------
CDBEXP        Export CFLDB ROM image

On your computer, you should see the updated FLDB (called CFLDB) being uploaded to your computer and the updated report.

Code:

HH:MM:SS Received   CORR_FLDB_8MB_EXPORT_REQUEST(0x4F)
HH:MM:SS Sent       CORR_FLDB_8MB_EXPORT_RESPONSE(0x50)
HH:MM:SS Receiving  2183 2186 2186 1637 = 8192 bytes received
HH:MM:SS File       CFLDB.ROM saved
HH:MM:SS Report     Outdated ROM images [BoardGeneration: third]
HH:MM:SS Report     0 outdated pages, out of 1024 pages, spread over 0 Flash blocks, estimated update time: 00h 00m 00s

Note: if you have outdated system ROM your list will not be empty.
If that is the case I will address that scenario in another post.

On the 41CL type:

Code:

Command       Description
------------  ---------------------------------------------------
CMCLOSE       Close serial port
OFF           
ON            To reactivate the sleep mode on your 41CL
CDBDEL        To clear the CFLDB location in your 41CL.
FDBVER?       Get current FLDB version of your 41CL

The output is the FLDB date currently installed in your 41CL. Date format respect MDY/DMY mode.
You should see 06/29/2022 for June 29th, 2022.

I hope this is detailled enough so you can do it.

Regards,

Sylvain

edit 1: typos
edit 2: added optional & MDY/DMY comments