# Bootloader is Completely Wiped on HiFive RevB board
**URL:** https://forums.sifive.com/t/bootloader-is-completely-wiped-on-hifive-revb-board/3959
**Category:** HiFive1 Rev B
**Created:** [August 11, 2020, 5:42am UTC](https://forums.sifive.com/t/bootloader-is-completely-wiped-on-hifive-revb-board/3959 "2020-08-11T05:42:37Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@BrokenRevB](https://forums.sifive.com/u/BrokenRevB)
#### Post date: [August 11, 2020, 5:42am UTC](https://forums.sifive.com/t/bootloader-is-completely-wiped-on-hifive-revb-board/3959/1 "2020-08-11T05:42:37Z")
Hello,
I just got a HiFive Rev B board, and was running my first test program
via
make PROGRAM=hello TARGET=sifive-hifive1-revb upload
it then asked to update firmware and I said ok, then the next thing I see it says I ejected my Rev B board improperly (mac osx).
After that, the RGB light no longer turns on. I think in the midst of updating the firmware it wiped everything.
I can no longer use “screen” to connect as it just hangs.
I found this thread [Bootloader restore](https://forums.sifive.com/t/bootloader-restore/2429) and attempted to use the .hex file to drag it to my rev B board.
It does nothing.
Also I see this new text file Board Info.txt which says No valid board info found
uploading the make program also yields this as an output
/opt/riscv/riscv64-unknown-elf-gcc-8.3.0-2020.04.0-x86\_64-apple-darwin/bin/riscv64-unknown-elf-objcopy -O ihex /Users/efatehi/projects/sifive/freedom-e-sdk/software/hello/debug/hello.elf /Users/efatehi/projects/sifive/freedom-e-sdk/software/hello/debug/hello.hex
scripts/upload --hex /Users/efatehi/projects/sifive/freedom-e-sdk/software/hello/debug/hello.hex --jlink JLinkExe
SEGGER J-Link Commander V6.82c (Compiled Jul 31 2020 17:37:44)
DLL version V6.82c, compiled Jul 31 2020 17:37:28
Connecting to J-Link via USB…O.K.
Firmware: J-Link OB-K22-SiFive compiled Jun 17 2020 14:52:05
Hardware version: V1.00
S/N: 979015891
VTref=3.300V
Device “FE310” selected.
Connecting to target via JTAG
ConfigTargetSettings() start
ConfigTargetSettings() end
TotalIRLen = 5, IRPrint = 0x01
JTAG chain detection found 1 devices:
#0 Id: 0x20000913, IRLen: 05, Unknown device
Debug architecture:
RISC-V debug: 0.13
AddrBits: 7
DataBits: 32
IdleClks: 5
Memory access:
Via system bus: No
Via ProgBuf: Yes (16 ProgBuf entries)
DataBuf: 1 entries
autoexec[0] implemented: Yes
Detected: RV32 core
CSR access via abs. commands: No
Temp. halted CPU for NumHWBP detection
HW instruction/data BPs: 8
Support set/clr BPs while running: No
HW data BPs trigger before execution of inst
RISC-V identified.
Downloading file [/Users/efatehi/projects/sifive/freedom-e-sdk/software/hello/debug/hello.hex]…
J-Link: Flash download: Bank 0 @ 0x20000000: Skipped. Contents already match
O.K.
ConfigTargetSettings() start
ConfigTargetSettings() end
TotalIRLen = 5, IRPrint = 0x01
JTAG chain detection found 1 devices:
#0 Id: 0x20000913, IRLen: 05, Unknown device
Debug architecture:
RISC-V debug: 0.13
AddrBits: 7
DataBits: 32
IdleClks: 5
Memory access:
Via system bus: No
Via ProgBuf: Yes (16 ProgBuf entries)
DataBuf: 1 entries
autoexec[0] implemented: Yes
Detected: RV32 core
CSR access via abs. commands: No
HW instruction/data BPs: 8
Support set/clr BPs while running: No
HW data BPs trigger before execution of inst
RISC-V: Performing reset via
Any ideas on how to fix this?
Thanks
---
### Author:  [@Disasm](https://forums.sifive.com/u/Disasm)
#### Post date: [August 11, 2020, 11:28am UTC](https://forums.sifive.com/t/bootloader-is-completely-wiped-on-hifive-revb-board/3959/2 "2020-08-11T11:28:00Z")
Could you try this? [https://github.com/riscv-rust/hifive1-recover/tree/master/hifive1-revb](https://github.com/riscv-rust/hifive1-recover/tree/master/hifive1-revb)
You can download the repository and run `recover` script for your board.
---
### Author:  [@BrokenRevB](https://forums.sifive.com/u/BrokenRevB)
#### Post date: [August 11, 2020, 4:36pm UTC](https://forums.sifive.com/t/bootloader-is-completely-wiped-on-hifive-revb-board/3959/3 "2020-08-11T16:36:26Z")
worked. thank you so much!