3516DV500配LPDDR4，UBOOT烧录失败，求解

硬件：3516dv500+EMMC 32GB+LPDDR4 2G，硬件存储芯片与DMEBPLUS不同
问题：uboot烧录不成功
LPDDR4内存型号：MT53E512M32D1ZW-046 IT:B
LPDDR4内存容量：2GByte
烧录的时候出现错误：
Platform Version: 5.6.35
BurnTool Version: 5.4
OS Name: Windows 11
OS Arch: amd64
OS Version: 10.0
Operation: Burn Emmc
ChipName: Hi3516DV500
TransferWay: Serial
chip file path: Resources/Common/ChipProperties/Hi3519DV500.txt

############################## —— 10%

#

JTL boot table board switch:0x00000003

#######Timeout error.

1. Check whether the serial port connection is normal.
2. The U-Boot is faulty.
   failed to send head frame!
   Failed to download file!
   或者
   Platform Version: 5.6.35
   BurnTool Version: 5.4
   OS Name: Windows 11
   OS Arch: amd64
   OS Version: 10.0
   Operation: Burn Emmc
   ChipName: Hi3516DV500
   TransferWay: Serial
   chip file path: Resources/Common/ChipProperties/Hi3519DV500.txt

############################## —— 10%

#

JTL boot table board switch:0x00000003

#

boot-table version :V2.1
boot table build time :2025/09/05 04:17:41
boot table file name :Hi3516DV500-DMEB_6L_T_DDR4_2400M-2GB_16bitx2-A55_850M.xlsm
DDR size: 0x00001000MB
Nack error(The serial port transmission may be unstable.).

Failed to send the data frame.

Failed to download file!