IMX93 uuu libusb error

jamesfowkes — Fri, 29 May 2026 14:01:10 GMT

Hello,

I am having issues using uuu to flash an IMX93 (MIMX9352CVVXMAB).

I am using Ubuntu 24.04.4 and uuu version:

uuu (Universal Update Utility) for nxp imx chips -- lib1.5.141

I can successfully flash the MCU on an IMX93EVK so I am confident that the laptop and software are not the issue.

The boot pins on the MCU are set to 0001 and the MCU is detected when powered.

dmesg output:

[15894.841580] usb 3-2: new high-speed USB device number 44 using xhci_hcd
[15894.966279] usb 3-2: New USB device found, idVendor=1fc9, idProduct=014e, bcdDevice= 0.01
[15894.966293] usb 3-2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[15894.966297] usb 3-2: Product: OO Blank 93
[15894.966300] usb 3-2: Manufacturer: NXP SemiConductor Inc 
[15894.969654] hid-generic 0003:1FC9:014E.0011: hiddev0,hidraw4: USB HID v1.10 Device [NXP SemiConductor Inc OO Blank 93] on usb-0000:00:14.0-2/input0

uuu -lsusb output:

james@laptop:~$ uuu -lsusb
uuu (Universal Update Utility) for nxp imx chips -- lib1.5.141

Connected Known USB Devices
Path Chip Pro   Vid    Pid    BcdVersion
==================================================
3:2  MX93 SDPS: 0x1FC9 0x014E 0x0001

But when I try and flash the MCU:

james@laptop:~$ uuu -v -V -b emmc_all imx-boot-imx93-sd.bin-flash_singleboot image-dev-imx93.rootfs-20260521113620.wic.zst 
uuu (Universal Update Utility) for nxp imx chips -- lib1.5.141

Build in config:
Pctl Chip Vid Pid BcdVersion
==================================================
SDPS: MX8QXP 0x1fc9 0x012f [0x0002..0xffff]
SDPS: MX8QM 0x1fc9 0x0129 [0x0002..0xffff]
SDPS: MX8DXL 0x1fc9 0x0147
SDPS: MX28 0x15a2 0x004f
SDPS: MX815 0x1fc9 0x013e
SDPS: MX865 0x1fc9 0x0146
SDPS: MX8ULP 0x1fc9 0x014a
SDPS: MX8ULP 0x1fc9 0x014b
SDPS: MX93 0x1fc9 0x014e
SDPS: MX95 0x1fc9 0x015d
SDP: MX7D 0x15a2 0x0076
SDP: MX6Q 0x15a2 0x0054
SDP: MX6D 0x15a2 0x0061
SDP: MX6SL 0x15a2 0x0063
SDP: MX6SX 0x15a2 0x0071
SDP: MX6UL 0x15a2 0x007d
SDP: MX6ULL 0x15a2 0x0080
SDP: MX6SLL 0x1fc9 0x0128
SDP: MX7ULP 0x1fc9 0x0126
SDP: MXRT106X 0x1fc9 0x0135
SDP: MX8MM 0x1fc9 0x0134
SDP: MX8MQ 0x1fc9 0x012b
SDPU: SPL 0x0525 0xb4a4 [0x0000..0x04ff]
SDPV: SPL1 0x0525 0xb4a4 [0x0500..0x9998]
SDPV: SPL1 0x1fc9 0x0151 [0x0500..0x9998]
SDPU: SPL 0x0525 0xb4a4 [0x9999..0x9999]
SDPU: SPL 0x3016 0x1001 [0x0000..0x04ff]
SDPV: SPL1 0x3016 0x1001 [0x0500..0x9998]
FBK: 0x066f 0x9afe
FBK: 0x066f 0x9bff
FBK: 0x1fc9 0x0153
FB: 0x0525 0xa4a5
FB: 0x18d1 0x0d02
FB: 0x3016 0x0001
FB: 0x1fc9 0x0152
FB: 0x0483 0x0afb

Run built-in script:

uuu_version 1.4.149

# @_flash.bin | bootloader, which can extract from wic image
# @_image [_flash.bin] | wic image burn to emmc.


# This command will be run when i.MX6/7 i.MX8MM, i.MX8MQ
SDP: boot -f imx-boot-imx93-sd.bin-flash_singleboot -scanlimited 0x800000

# This command will be run when ROM support stream mode
# i.MX8QXP, i.MX8QM
SDPS: boot -scanterm -f imx-boot-imx93-sd.bin-flash_singleboot -scanlimited 0x800000

# These commands will be run when use SPL and will be skipped if no spl
# SDPU will be deprecated. please use SDPV instead of SDPU
# {
SDPU: delay 1000
SDPU: write -f imx-boot-imx93-sd.bin-flash_singleboot -offset 0x57c00
SDPU: jump -scanlimited 0x800000
# }

# These commands will be run when use SPL and will be skipped if no spl
# if (SPL support SDPV)
# {
SDPV: delay 1000
SDPV: write -f imx-boot-imx93-sd.bin-flash_singleboot -skipspl -scanterm -scanlimited 0x800000
SDPV: jump -scanlimited 0x800000
# }


FB: ucmd setenv fastboot_dev mmc
FB: ucmd setenv mmcdev ${emmc_dev}
FB: ucmd mmc dev ${emmc_dev}
FB: flash -raw2sparse all image-dev-imx93.rootfs-20260521113620.wic.zst/*
FB: flash -scanterm -scanlimited 0x800000 bootloader imx-boot-imx93-sd.bin-flash_singleboot
FB: ucmd if env exists emmc_ack; then ; else setenv emmc_ack 0; fi;
FB: ucmd mmc partconf ${emmc_dev} ${emmc_ack} 1 0
FB: done


Wait for Known USB Device Appear...
New USB Device Attached at 3:2
3:2>Start Cmd:SDPS: boot -scanterm -f imx-boot-imx93-sd.bin-flash_singleboot -scanlimited 0x800000
3:2>Fail HID(W):LIBUSB_ERROR_IO(0.114s)

This error sometimes also appears as a LIBUSB_ERROR_TIMEOUT.

I have read through all the existing threads I can find about libusb errors but none have helped me.

Any suggestions or advice are appreciated.

Re: IMX93 uuu libusb error

Chavira — Fri, 29 May 2026 21:13:10 GMT

Hi @jamesfowkes,

Thank you for contacting NXP Support.

As I understand, you are using a custom board. Could you please confirm this?

Have you ported our software to match the hardware on your board by following our porting guide?

Additionally, could you try using the latest version of the UUU tool?

Have you completed DDR training and generated the corresponding timing files for your hardware?

Best regards,
Chavira

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