i used rkflash.sh in the sdk for flashing firmware for Luckfox pico plus, maybe my firmware has some problem then the board cannot boot in kernel. Please help me how to flash default image. now PC cannot detect usb (lsusb) - enter download mode. This is log via uart:
"DDR 306b9977f5 wesley.yao 23/12/21-09:28:37,fwver: v1.15
S5P1
4x
fc27
rgef0
rgef1
DDRConf1
DDR2, BW=16 Col=10 Bk=4 CS0 Row=13 CS=1 Size=64MB
528MHz
DDR bin out
U-Boot SPL board init
U-Boot SPL 2017.09 (Nov 24 2025 - 11:49:08)
Trying to boot from MMC2
MMC: no card present
mmc_init: -123, time 2
MMC: no card present
mmc_init: -123, time 2
spl: mmc init failed with error: -123
Trying to boot from MTD1
ENVF: Primary 0x00000000 - 0x00040000
No misc partition
Trying fit image at 0x400 sector
## Verified-boot: 0
## Checking uboot 0x00200000 (lzma @0x00400000) ... sha256(e3b0c44298...) + uboot: decompress error, ret=1
OK
## Checking fdt 0x00200000 ... sha256(9f596c5683...) + OK
Total: 69.784/151.217 ms
Jumping to U-Boot(0x00200000)"
U-boot worked wrong
Hello, if you can't enter the loader mode, you can try short-circuiting the clk and gnd of the flash to enter the markrom mode and then reflash.
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