Unable to run "sta+ap" on my ESP32S

Here's what happened for my newly flashed ESP32S

>require("Wifi").getStatus()
={ 
  station: "Unknown reason", 
  mode: "AP", 
  powersave: "modem"
 }
>require("Wifi").save("sta+ap");
=undefined
>require("Wifi").getStatus()
={ 
  station: "Unknown reason", 
  mode: "AP", 
  powersave: "modem"
 }
>E.reboot()
ets Jun  8 2016 00:22:57

rst:0xc (SW_CPU_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_d­rv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:2
load:0x3fff0018,len:4
load:0x3fff001c,len:2668
load:0x40078000,len:7304
load:0x40080000,len:5312
entry 0x40080274
E (536) spiram: SPI RAM enabled but initialization failed. Bailing out.

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WARNING: jswrap_wifi_restore: AP=ESP_4CA4D5
>require("Wifi").getStatus()
={ 
  station: "Unknown reason", 
  mode: "AP", 
  powersave: "modem"
 }
>process.env
={ 
  VERSION: "2v04.3", 
  GIT_COMMIT: "83fba1f3", 
  BOARD: "ESP32", 
  FLASH: 0, RAM: 524288, 
  SERIAL: "3c71bf4c-a4d4", 
  CONSOLE: "Serial1", 
  MODULES: "Flash,Storage,hea" ... "lnetServer,crypto", 
  EXPTR: 1073484860 }
>

so how to make my ESP32S to support "sta+ap" ?
This MCU can run both mode when I script it in Arduino, but when I script it in Espruino, it will automatically disconnect station wifi when it has Access point on.

also, how to fix "E (536) spiram: SPI RAM enabled but initialization failed. Bailing out." ?

thanks for reading