LaCie NS2 - *** Warning - bad CRC, using default (no replies)

Hi!

Updated u-boot, environment variables are lost.
Connected via UART.
After rebooting, the CRC error appears again and the variables are not saved.
Tried commands "env default -a", "saveenv", "env save" - no result.
Ask for advice.

ns2> env default -a
## Resetting to default environment
ns2> saveenv
Saving Environment to SPI Flash... SF: Detected mx25l4005a with page size 256 Bytes, erase size 4 KiB, total 512 KiB
Erasing SPI flash...Writing to SPI flash...done
OK
ns2> env save
Saving Environment to SPI Flash... Erasing SPI flash...Writing to SPI flash...done
OK
ns2> reset

U-Boot 2020.07-rc5-00057-gfce0bb3e2bd8 (Jul 09 2020 - 11:11:59 +0200) NS v2

SoC:   Kirkwood 88F6281_A1
I2C:   ready
DRAM:  256 MiB
Loading Environment from SPI Flash... SF: Detected mx25l4005a with page size 256 Bytes, erase size 4 KiB, total 512 KiB
*** Warning - bad CRC, using default environment

In:    serial
Out:   serial
Err:   serial
Net:   eth0: ethernet-controller@72000
88E1116 Initialized on ethernet-controller@72000
Hit any key to stop autoboot:  0
ns2> version
U-Boot 2020.07-rc5-00057-gfce0bb3e2bd8 (Jul 09 2020 - 11:11:59 +0200) NS v2

arm-buildroot-linux-gnueabi-gcc.br_real (Buildroot 2020.02-00011-g7ea8a52) 8.4.0
GNU ld (GNU Binutils) 2.32
ns2>