HL8548-G downgrade firmware

Hi,
I’m trying to downgrade the firmware of one HL8548-G module from the version 5.5.24 to the version 5.5.22.
I’m using the exe file provided by Sierra but when I run it, I have an error:
“Library Error: IMCDownload.cpp:508 - SPH_state_await_tra (1)”.
How can I downgrade the firmware?
Best regards,
Fabrice

No problem is found on my side.
Is this only happen to one module only?


Log file is “C:\Users\jyi\AppData\Local\Temp\HL8FW_r4251.log”
Use Port: USB1

Intel Command Line FlashTool v.1.37 1.3-r33 (Download Library v.4.140,0.0 )

psi.fls (PSI) (NAND)
slb.fls (SLB) (NAND)
AENEAS_FW.fls (Code) (NAND)
SAM_6260.fls (Code) (NAND)
SAM_6260-MSY.fls (Code) (NAND)
SAM_6260-CDS.fls (Code) (NAND)
Booting ‘C:\Users\jyi\AppData\Local\Temp\7zSEE02.tmp\temp\psi.fls’, memclass: PSI
-> Please reboot your phone device <-

Device synchronized.
Details> Injecting RPSI
Details> Injecting EBL
Details> Boot-loader is active
Details> EBL version: XMM6260_1327.100_M1S1 1327…100
Details> Boot mode is: BB
Using: Faster CRC, Writing all blocks , Skip data CRC , Skip protocol CRC
Details> Package length is 16384 - protocol: 3.32
Details> Baud rate set to 921600
Details> Get flash id.
Details> Flash ID is: 00A100C8
Details> Boot process finished

Downloading files (6)…
Downloading PSI…

Start downloading item ‘BOOT CORE PSI:psi.fls’’ from file ‘C:\Users\jyi\AppData\Local\Temp\7zSEE02.tmp\temp\psi.fls’’.
Details> Sending sec-pack.
Details> Load region 0
Details> - Erasing. (Pre-erase, Used-length)
Progress: 100%
Details> - Sending data. (USB RAW mode)
Progress: 100%
Details> Sending end-pack.
Checksum OK (0x2909)
Details> Verify OK
Process time was 141 msec.

Downloading SLB…

Start downloading item ‘BOOT CORE SLB:slb.fls’’ from file ‘C:\Users\jyi\AppData\Local\Temp\7zSEE02.tmp\temp\slb.fls’’.
Details> Sending sec-pack.
Details> Load region 0
Details> - Erasing. (Pre-erase, Used-length)
Progress: 100%
Details> - Sending data. (USB RAW mode)
Progress: 100%
Details> Sending end-pack.
Checksum OK (0x7A84)
Details> Verify OK
Process time was 672 msec.

Downloading Code…

Start downloading item ‘CODE:AENEAS_FW.fls’’ from file ‘C:\Users\jyi\AppData\Local\Temp\7zSEE02.tmp\temp\AENEAS_FW.fls’’.
Details> Sending sec-pack.
Details> Load region 0
Details> - Erasing. (Pre-erase, Used-length)
Progress: 100%
Details> - Sending data. (USB RAW mode)
Progress: 100%(7.4 Mb/s)
Details> Sending end-pack.
Checksum OK (0x4D4D)
Details> Verify OK
Process time was 812 msec.

Downloading Code…

Start downloading item ‘CODE:SAM_6260.fls’’ from file ‘C:\Users\jyi\AppData\Local\Temp\7zSEE02.tmp\temp\SAM_6260.fls’’.
Details> Sending sec-pack.
Details> Load region 0
Details> - Erasing. (Pre-erase, Used-length)
Progress: 100%
Details> - Sending data. (USB RAW mode)
Progress: 100%(11 Mb/s))
Details> Sending end-pack.
Checksum OK (0xB452)
Details> Verify OK
Process time was 8.0 sec.

Downloading Code…

Start downloading item ‘CODE:SAM_6260-MSY.fls’’ from file ‘C:\Users\jyi\AppData\Local\Temp\7zSEE02.tmp\temp\SAM_6260-MSY.fls’’.
Details> Sending sec-pack.
Details> Load region 0
Details> - Erasing. (Pre-erase, Used-length)
Progress: 100%
Details> - Sending data. (USB RAW mode)
Progress: 100%(11 Mb/s)
Details> Sending end-pack.
Checksum OK (0xBBD1)
Details> Verify OK
Process time was 625 msec.

Downloading Code…

Start downloading item ‘CODE:SAM_6260-CDS.fls’’ from file ‘C:\Users\jyi\AppData\Local\Temp\7zSEE02.tmp\temp\SAM_6260-CDS.fls’’.
Details> Sending sec-pack.
Details> Load region 0
Details> - Erasing. (Pre-erase, Used-length)
Progress: 100%
Details> - Sending data. (USB RAW mode)
Progress: 100%(11 Mb/s)
Details> Sending end-pack.
Checksum OK (0x617E)
Details> Verify OK
Process time was 625 msec.

Success!

Force Target Reset!

Total time was 12.0 sec.

This prompt will be closed in 5 seconds

Hi Jyijyi,

Thank you for your reply.
I tried on 3 modules and the result was exatly the same.
I made other tests. When I downgrade from 5.5.25 to 5.5.24, there is no problem. When I tried from 5.5.25 (or 5.5.24) to 5.5.23 or an anterior version, I have the error.

Best regards,
Fabrice