Rockbox Technical Forums

Support and General Use => Hardware => Topic started by: ucong on July 21, 2020, 03:05:09 AM

Title: Samsung YP-R0 cannot boot to RB
Post by: ucong on July 21, 2020, 03:05:09 AM
Hi, im updating my Samsung YP-R0 to the latest version of developer builds (a5df94beb5) and after that it cannot boot to RB (it keep back to system checking).
I wonder what was wrong? im using dual boot os bootloader from Vannix at ABI forums.

Is anyone can help?

Thx in advance.
Title: Re: Samsung YP-R0 cannot boot to RB
Post by: speachy on July 30, 2020, 09:15:14 AM
Does the 3.15 release work?
Title: Re: Samsung YP-R0 cannot boot to RB
Post by: cela on July 30, 2020, 02:10:09 PM
Hi, im updating my Samsung YP-R0 to the latest version of developer builds (a5df94beb5) and after that it cannot boot to RB (it keep back to system checking).
I wonder what was wrong? im using dual boot os bootloader from Vannix at ABI forums.

Is anyone can help?

Thx in advance.

I just installed the latest developer build on my YP-R0 ef05dc9c3b and it seems to be working fine for me, i don't have the bootloader set to dual, I have set to boot Rockbox by default. using bootl.cfg on root of SD card, below is my config:-

Code: [Select]
##################################################################################
############################### YP-R0 Boot Loader!! ##############################
###################################### V2.50 #####################################
#################################### By VanniX ###################################
######################## Thanks to Lorenzo92 and lebellium #######################
##################################################################################


# Do not add or remove lines if you don't know what are you doing!
# Be careful, you can brick your player!!
# You can change the lines below to customize the rom startup!

RSTMOD=Y #options: Y (Yes), N (No) - Reset time mod (10 to 5 sec)
AUTEXS=N #options: Y (Yes), N (No) - Autoexec script in /mnt/mmc/autoexec at startup
AUTUSB=C #options: Y (Yes - SafeMode), N (No), C (Charge) - Action when a USB cable is connected at startup
LOGOBL=N #options: Y (show bl_logo), N (don't show bl_logo) - Display bootloader screen
TIMEBL=30 #options: [NUMBER] (15 = ~1 sec) - Cycles before starting default app
DFLAPP=RB #options: RB (RockBox), SA (Samsung App), DS (Do not Start automatically) - Default appz
Title: Re: Samsung YP-R0 cannot boot to RB
Post by: lebellium on October 12, 2020, 06:19:45 PM
Sorry, I missed this thread.

"System checking" in a loop probably means your YP-R0 is bricked.
It probably occurred after your connected your R0 to the PC to update the Rockbox build then disconnected it. It automatically updated the Samsung library and it failed.
This is an infamous bug in any firmware version. It was much discussed on the forums back to the time but some of them like ABI are now down unfortunately.

If you had the original firmware installed (let's say 1.25), you would be in troubles because only the Samsung recovery tool and a special 301 KOhm USB cable could fix it.
But since you seem to have the Modfirm v2.51 dualboot (from Lorenzo92 by the way. VanniX did the Rockbox-only LightROM 4.6), it can be easily fixed with the Safe Mode.

Let me know here if you still need help.