What should I do with App Error 523?

App Error 523 is a software hiccup usually caused by a 3rd-party application that is not compatible with the BlackBerry device OS.
Follow the below steps to get rid of this error message:

1. Take the battery out and put it back in after 30 seconds or so

2. While the device is rebooting (or while the hourglass is still spinning), plug it into the PC

3. Then open the application loader and remove the 3rd-party application that’s causing the issue

4. Worst-case is when you need to wipe the device using JL_Cmder. Follow the instructions here: How do I wipe the BlackBerry using Jl Cmder?
Thanks to John Clark from BlackBerryForums for the tip!

FLASH #105 FACSIMILE EDITION - NOW SHIPPING picture

FLASH #105 FACSIMILE EDITION - NOW SHIPPING

$3.47



GEMINI Comic Book Flash Mailers with Filler Pads Bundle picture

GEMINI Comic Book Flash Mailers with Filler Pads Bundle

$99.95



( FOIL ) FLASH #1 CVR F RAHZZAH VAR / PRESALE 9/26/23 picture

( FOIL ) FLASH #1 CVR F RAHZZAH VAR / PRESALE 9/26/23

$6.95



FLASH #1 (DAN MORA CARDSTOCK VARIANT)(2023) Comic Book ~ DC COMICS ~NM picture

FLASH #1 (DAN MORA CARDSTOCK VARIANT)(2023) Comic Book ~ DC COMICS ~NM

$8.39



Flash Comics #37 VG- 3.5 Classic, Iconic Cover, Incomplete but VERY AFFORDABLE  picture

Flash Comics #37 VG- 3.5 Classic, Iconic Cover, Incomplete but VERY AFFORDABLE

$349.00



Flash #1 Cover A Mike Deodato Jr & Trish Mulvihill picture

Flash #1 Cover A Mike Deodato Jr & Trish Mulvihill

$4.99



FLASH #1 - MIKE DEODATO JR. MAIN COVER - DC COMICS/2023 picture

FLASH #1 - MIKE DEODATO JR. MAIN COVER - DC COMICS/2023

$4.49



Flash #105 Facsimile Edition picture

Flash #105 Facsimile Edition

$3.99



GEMINI Comic Flash Mailer Filler Pads  picture

GEMINI Comic Flash Mailer Filler Pads

$89.95



THE FLASH BY FRANCIS MANAPUL LOT picture

THE FLASH BY FRANCIS MANAPUL LOT

$40.00