Hacking EZ-FLASH Junior TestFlight

Bonnom

Active Member
Newcomer
Joined
Sep 7, 2020
Messages
40
Trophies
0
Age
30
XP
193
Country
Netherlands
I've tried everything, everything.
At first it worked, the games were in folders, and "EZ-FLASH Junior" saw all the folders. I just decided to add other folders and put games there. I. "EZ-FLASH Junior" stopped seeing folders.
Now the games are in the root of the "EZ-FLASH Junior"
And I tried everything, but I'm tired of it.

I had this problem before, I thought I solved it by formatting the sd card with the official sd card format program. I also sometimes use a SD sorter program so all my games are in alphabetical order but I don't think that helped.
 

DrunkenMonk

Well-Known Member
Member
Joined
Sep 30, 2007
Messages
523
Trophies
1
Age
31
XP
1,751
Country
United Kingdom
I had this problem before, I thought I solved it by formatting the sd card with the official sd card format program. I also sometimes use a SD sorter program so all my games are in alphabetical order but I don't think that helped.
a fat sorter can help actually in situations like these, similar thing happens with the GDEMU
 

Gordiel

New Member
Newbie
Joined
Mar 4, 2020
Messages
4
Trophies
0
Age
34
XP
75
Country
United States
Hi! For some reason my GB Flash Junior do not save data. My save do work on the Game Boy (I've completed a file of Pokemon Yellow) but i wanted to import my save to my PC to modify some numbers on PokéHex. The file is there on the SAVER document, but it's empty (0ko file). My save still work when I load the game on the console (so I guess the save is still in the save battery but not in the Micro SD? I tried two different SD cards but the problem stay the same). For info I have saved files frome other games so the card worked well prior to update (I should've read the topic before updating weeks ago). Maybe its caused by the update?

No one? I've started a file on Donkey Kong Land yesterday and it's gone now. For some reason my file of Yellow is still here. Can I downfrade to FW4? It was workink better.
 

Bonnom

Active Member
Newcomer
Joined
Sep 7, 2020
Messages
40
Trophies
0
Age
30
XP
193
Country
Netherlands
No one? I've started a file on Donkey Kong Land yesterday and it's gone now. For some reason my file of Yellow is still here. Can I downfrade to FW4? It was workink better.

It could be that the SD card became corrupt. The SD card is formatted with FAT32, the problem with FAT32 is it is not a journaling file system. This makes it very easy for FAT32 to become corrupt. This usually happens for example when a device is turned off while it is writing to the sd card.

I would backup all files from the SD card, and run error checking on the SD card (chkdsk or something). Be absolutely sure to backup the files, error checking programs can lead to data loss.

Alternatively you can reformat the SD card.
 

Gordiel

New Member
Newbie
Joined
Mar 4, 2020
Messages
4
Trophies
0
Age
34
XP
75
Country
United States
It could be that the SD card became corrupt. The SD card is formatted with FAT32, the problem with FAT32 is it is not a journaling file system. This makes it very easy for FAT32 to become corrupt. This usually happens for example when a device is turned off while it is writing to the sd card.

I would backup all files from the SD card, and run error checking on the SD card (chkdsk or something). Be absolutely sure to backup the files, error checking programs can lead to data loss.

Alternatively you can reformat the SD card.
Ive tried formating and another SD Card. The problem stays the same. My EZ Flash cannot write save file on the SD card anymore... Games are working great as long as the save is on the battery included in the cart, but if I change of games my saves can be lost forever (like it happened with DK Land 3). It was working fine before upgrading. I shouldn't have upgraded. Is it possible to downgrade? Will it brick the cart?
 

pustal

Yeah! This is happenin'!
Member
Joined
Jul 19, 2011
Messages
1,556
Trophies
2
Location
Emerald Coast
Website
web.archive.org
XP
6,102
Country
Portugal
it can not brick your card. but if you don not have a fast enough SD card. you maybe halted at the loading interface. but we have a recovery tool........ once you get halted. send me a PM.
The "bricking" most people are complaining is then then?
If I buy a SanDisk red 32GB, I should have no problem, is that correct?

Edit: may be a region thing, but I can't find any SanDisk "Red" line cards selling here. Would something like this (SanDisk Extreme Plus) or this (SanDisk Extreme Plus Pro) do?
 
Last edited by pustal,

kiddejig

Member
Newcomer
Joined
Apr 14, 2021
Messages
20
Trophies
0
XP
156
Country
Netherlands
Please prepare at least one SD card with sufficient speed, such as sandisk red 32GB, to avoid encountering INIT OS issue.

I am interested in what kind of speeds your SanDisk red 32GB scores in test programs like CrystalDiskMark.
Then I could compare it with my Kingston Micro SD and determine if I should try to update to 1.05.

20210414_175212.jpg CrystalDiskMark_20210414174517.png
 
  • Like
Reactions: WiLLiW and pustal

WiLLiW

Well-Known Member
Member
Joined
May 2, 2020
Messages
124
Trophies
0
Age
115
XP
503
Country
Brazil
My 16GB card also 32GB (using EZ-Flash Jr v1.04) :grog:
 

Attachments

  • disk.jpg
    disk.jpg
    90.6 KB · Views: 132
  • IMG_20210415_172822.jpg
    IMG_20210415_172822.jpg
    75.4 KB · Views: 130
  • disk2.jpg
    disk2.jpg
    92.9 KB · Views: 142
  • IMG_20210415_175557.jpg
    IMG_20210415_175557.jpg
    44.3 KB · Views: 142
Last edited by WiLLiW,

pustal

Yeah! This is happenin'!
Member
Joined
Jul 19, 2011
Messages
1,556
Trophies
2
Location
Emerald Coast
Website
web.archive.org
XP
6,102
Country
Portugal
I am interested in what kind of speeds your SanDisk red 32GB scores in test programs like CrystalDiskMark.
Then I could compare it with my Kingston Micro SD and determine if I should try to update to 1.05.

View attachment 258290 View attachment 258287

0lEOiXg.jpg


This is the results I got SanDisk Extreme Pro I just got. I wonder if what matter here are the read or write speeds, and the sequencial or random speeds. @EZ-Flash2 , what do you reckon?

My 16GB card also 32GB (using EZ-Flash Jr v1.04) :grog:

You're fine with 1.04 regardless. It's 1.05 that repportedly has the issue with speeds.
 

WiLLiW

Well-Known Member
Member
Joined
May 2, 2020
Messages
124
Trophies
0
Age
115
XP
503
Country
Brazil
0lEOiXg.jpg


This is the results I got SanDisk Extreme Pro I just got. I wonder if what matter here are the read or write speeds, and the sequencial or random speeds. @EZ-Flash2 , what do you reckon?



You're fine with 1.04 regardless. It's 1.05 that repportedly has the issue with speeds.

oh man, this is sad! Between, nice results there!
 
  • Like
Reactions: pustal

kiddejig

Member
Newcomer
Joined
Apr 14, 2021
Messages
20
Trophies
0
XP
156
Country
Netherlands
This is the results I got SanDisk Extreme Pro I just got. I wonder if what matter here are the read or write speeds, and the sequencial or random speeds. @EZ-Flash2 , what do you reckon?

Yeah, that is actually why I asked. If we know @EZ-Flash2 their SD card speed we could take that into consideration before attempting the update.


But I have since then had the pleasure of reading this thread back and boy, it sounds like it's been a bumpy ride for the EZ-Flash team.
I get the impression that it is gonna take them some time to solve this RTC problem.
It was nice to see the people of the Pokemon Prism project trying to help solve the problem and they even wrote an RTC test program.
 
  • Like
Reactions: pustal

WiLLiW

Well-Known Member
Member
Joined
May 2, 2020
Messages
124
Trophies
0
Age
115
XP
503
Country
Brazil
I am interested in what kind of speeds your SanDisk red 32GB scores in test programs like CrystalDiskMark.
Then I could compare it with my Kingston Micro SD and determine if I should try to update to 1.05.

View attachment 258290 View attachment 258287
Your read speeds are nice! But, write speeds are slower than mine... Are you on chinese knockoff cards too?
 

pustal

Yeah! This is happenin'!
Member
Joined
Jul 19, 2011
Messages
1,556
Trophies
2
Location
Emerald Coast
Website
web.archive.org
XP
6,102
Country
Portugal
Yeah, that is actually why I asked. If we know @EZ-Flash2 their SD card speed we could take that into consideration before attempting the update.


But I have since then had the pleasure of reading this thread back and boy, it sounds like it's been a bumpy ride for the EZ-Flash team.
I get the impression that it is gonna take them some time to solve this RTC problem.
It was nice to see the people of the Pokemon Prism project trying to help solve the problem and they even wrote an RTC test program.

My biggest problem with junior isn't even RTC but that I have one of those gameboy colors that version 1.04 won't go past boot.
 

kiddejig

Member
Newcomer
Joined
Apr 14, 2021
Messages
20
Trophies
0
XP
156
Country
Netherlands
My biggest problem with junior isn't even RTC but that I have one of those gameboy colors that version 1.04 won't go past boot.

Yeah, you are right, their main priority should be overall stability followed by the features of the product that are listed on their site.
It amazed me to see that there were people demanding features that were never promised and knock-off console support.
 
  • Like
Reactions: pustal

pustal

Yeah! This is happenin'!
Member
Joined
Jul 19, 2011
Messages
1,556
Trophies
2
Location
Emerald Coast
Website
web.archive.org
XP
6,102
Country
Portugal
Yeah, you are right, their main priority should be overall stability followed by the features of the product that are listed on their site.
It amazed me to see that there were people demanding features that were never promised and knock-off console support.

For what I understand they were working on RTC before they found out these batch of GameBoys so they bundled everything. I don't know what is causing this problem, if the RTC or the CPU changes, but might as well be the latter.
 

kiddejig

Member
Newcomer
Joined
Apr 14, 2021
Messages
20
Trophies
0
XP
156
Country
Netherlands
For what I understand they were working on RTC before they found out these batch of GameBoys so they bundled everything. I don't know what is causing this problem, if the RTC or the CPU changes, but might as well be the latter.

I think that those are different problems. The overall original console compatibility depends on how the Junior communicates with the console's CPU and the RTC problem depends on how the Junior communicates with the RTC chip on the Junior.

Regarding the RTC problem, someone from the Pokemon Prism project, who has experience with RTC functionality, wrote:
In particular, from the results of the test ROM, the EZ-Flash Jr's RTC implementation has issues when you write to it (i.e., when you change the RTC values). A vanilla Crystal game only does this every four months, but Prism does it every time you play it. That's why it doesn't work on the EZ-Flash Jr.
It's almost certainly fixable with a firmware update. (While firmware is basically software, it's very special and delicate; see: all the issues people have had here with firmware updates.)

EDIT: Also, the RTC problem does not only occur in this Prism rom hack but it is more present because it uses the RTC fuctionallity more often.
 
Last edited by kiddejig,
  • Like
Reactions: pustal

Bonnom

Active Member
Newcomer
Joined
Sep 7, 2020
Messages
40
Trophies
0
Age
30
XP
193
Country
Netherlands
Ive tried formating and another SD Card. The problem stays the same. My EZ Flash cannot write save file on the SD card anymore... Games are working great as long as the save is on the battery included in the cart, but if I change of games my saves can be lost forever (like it happened with DK Land 3). It was working fine before upgrading. I shouldn't have upgraded. Is it possible to downgrade? Will it brick the cart?

Have you tried changing the save battery?
 

Bonny

Well-Known Member
Member
Joined
Dec 8, 2008
Messages
825
Trophies
1
Location
Bavaria
XP
2,084
Country
Germany
First of all: SORRY for this question!

But, since when is: "Support Gameboy, Gameboy Pocket, Gameboy Color, Gameboy Advance/SP, even with backlit mods and rechargeable batteries." officially listed in the Feature List of ezflash.cn ??? - https://www.ezflash.cn/product/ezflash-junior/

And what FW and/or Kernel is the best for backlit modded systems? I'am on FW5 and Kernel 1.04e.

Basically, my EZ Jr. boots up and loads/plays games correctly with this FW/Kernel. But if i press the Soft-reset button, it does not reboot correctly into the menu, instead it gets stuck at the "LOADING"-Message.
 
Last edited by Bonny,

Site & Scene News

Popular threads in this forum

General chit-chat
Help Users
  • No one is chatting at the moment.
  • Sicklyboy @ Sicklyboy:
    maaaaan that's so awesome but I also don't want to fork over a hundo for it
  • Veho @ Veho:
    The fuuuuu---
  • Veho @ Veho:
    I thought it was an actual xBox at that price.
  • Sicklyboy @ Sicklyboy:
    I wanna grab a 360 Slim and a 360 E one of these days. Missed the boat of getting them at their lowest though, once they were discontinued. Could've got them for cheap back when I was a broke 20 something working at Target, but then again, I was a broke 20 something working at Target
  • Veho @ Veho:
    Being broke is no fun.
  • K3Nv2 @ K3Nv2:
    @Sicklyboy, $150 isn't that bad for a jtag slim on ebay
  • Veho @ Veho:
    I only wish it was actually playable.
  • Veho @ Veho:
    There's a guy on the Tube of You that makes playable mechanical arcade games out of Lego. This could work on the same principle.
  • Veho @ Veho:
    Just a couple of guys taking their manatee out for some fresh air, why you have to molest them?
  • Veho @ Veho:
    Stupid Chinese shop switched their shipping company and this one is slooooooow.
  • LeoTCK @ LeoTCK:
    STOP BUYING CHINESE CRAP THEN
  • LeoTCK @ LeoTCK:
    SUPPORT LOCAL PRODUCTS, MAKE REVOLUTION
  • LeoTCK @ LeoTCK:
    THEY KEEP REMOVING LOCAL SHIt AND REPLACING WItH INFERIOR CHINESE CRAP
  • LeoTCK @ LeoTCK:
    THATS WHY MY PARTNER CANT GET A GOOTWEAR HIS SIZE ANYMORE
  • LeoTCK @ LeoTCK:
    HE HAS BIG FOOT AND BIG DUCK
  • LeoTCK @ LeoTCK:
    d*ck i mean*
  • LeoTCK @ LeoTCK:
    lol
  • Veho @ Veho:
    Mkay.
  • Veho @ Veho:
    I just ordered another package from China just to spite you.
  • SylverReZ @ SylverReZ:
    Leo could not withstand communism.
  • SylverReZ @ SylverReZ:
    Its OUR products to begin with lol.
    SylverReZ @ SylverReZ: Its OUR products to begin with lol.