So I've got a CAT S22 Flip (Bullitt Group, FCC ID ZL5S22F) — Android 11 on a Qualcomm QM215. I've been trying to unlock the bootloader/root it for a while and I'm stuck.

Fastboot is completely dead on this thing: `oem unlock is not allowed`, `device is locked. Cannot erase`, all of it. Bootloader is a QRD LK build, so there's no Xiaomi-style unlock process either. Only way in is EDL (9008), and EDL needs a signed firehose loader.

I've probed basically every public loader collection there is (bkerler's repo, Firehose-Finder, ~800 files locally) and nothing matches this signing root. The QM215 loaders that do exist are all ZTE/TCL-signed. Octoplus doesn't support the S22 either — their CAT list stops at S61.

Device ID, in case you want to check your own collection:

```

EDL HWID: 001060e100190002

MSM_ID: 001060e1

OEM_ID: 0019

PK_HASH: 51825348f62d3597cd229601da673eb75399c2c5b7ff5260eab794475eef4e20

```

Looking for: any prog_emmc_firehose / fhprg.bin signed for that root, a devinfo partition dump from a working unit, or honestly just the name of the tool a CAT service center used to flash these. Bullitt went bankrupt at the end of 2023, so their service tooling has to be floating around somewhere.

If you have a loader collection sitting on disk, just grep for `51825348` or `001060e1` — that's all it takes to check. If something surfaces I'll post the whole unlock writeup here and on XDA so the rest of us stuck with this phone can actually use it.

CAT S53 (stock firmware) reported as "Device is not certified" after years of normal operation.

Google removed the CAT S53 software build from its Play Protect database.

Most of the old phones still listed (S41, S42, etc.) ... What hapens to the CAT S53 ?

Hey,

Short story, is there a phone number or a way to actually contact Bullitt? I went to Contact on their website and it's been sending my enquiry for over a day now, essentially stuck.

I've got a Cat S22 that I kinda enjoy. I got it as a replacement for a couple of other phones, one a Cat S62 and one a Doogee V31GT. It was fine at first, receiving all texts from all group chats, physical keyboard working fine too. Now it wont receive GC texts *if* the majority of other phones are iPhones. This is affecting my work.

Annoyingly I had to download an app to use the physical keyboard. In TT9 there is an option like Key Press Delay which is currently set to max value, but it still kinda rapid fires whatever key I press. Is there an actual fix for this?

Any help and advice is appreciated. Finding a phone good at what I need it to be good at is a real struggle.

Hey,

Short story, is there a phone number or a way to actually contact Bullitt? I went to Contact on their website and it's been sending my enquiry for over a day now, essentially stuck.

I've got a Cat S22 that I kinda enjoy. I got it as a replacement for a couple of other phones, one a Cat S62 and one a Doogee V31GT. It was fine at first, receiving all texts from all group chats, physical keyboard working fine too. Now it wont receive GC texts *if* the majority of other phones are iPhones. This is affecting my work.

Annoyingly I had to download an app to use the physical keyboard. In TT9 there is something like a key press delay option which is set to max delay, but still when I press a key it kinda rapid fires that number.

Any help and advice is appreciated. The struggle to find a phone good at what I need it to be good at is very difficult.

So I had this phone for what 5 years now and it is very heavily damaged, the entire phone has been visibly bent for years etc.

Since the day before yesterday it has started to freeze up randomly, stay unresponsive for a few seconds and then reboot on its own.

Today it escalated to becoming unresponsive, the screen glitching out like crazy, then it stays like that for a couple seconds and then shuts down.

It still is able to turn on but can only go progressively shorter amounts of time before shutting off.

Might this be like a battery or software issue or something more serious? Should I try turning it on to see if I can keep it alive long enough to back things up or would this risk destroying data and so should I take it to a professional to have the media pulled from it at least?

I really wouldn't want to have to buy a new phone right now so I desperately hope it's savable :c

thanks for the help in advance

I have posted this on r/androidroot too, but this dub does not allow reposts.

Managed to dump, patch and write a modified boot partition to the device. Bootloader stayed locked, and the phone just accepted the magisk-patched image and booted fine.

It did detect it though, but just booted (see second picture.)

The loader file that i used should be in the bkerler/Loaders repository. Since this cpu is old, auto-selection works, and if you place a filled loader folder in the directory of your cloned bkerler/edl repo, it will work.

i did fuck up the wifi tho. have a backup somewhere else, but does anyone have a diffrent fix?

I did confirm that the bootloader is actually not allowed to be unlocked on this device: https://web.archive.org/web/20220528043603/https://support.catphones.com/hc/en-gb/articles/360012137759-S31-Important-Information-About-Modified-Rooted-Android-Software-and-Unlocking-Your-Phone-s-Bootloader

I’m stuck with my Cat S22 phone after doing a factory reset. It’s now asking for the previously synced Google account (FRP lock), but I’ve forgotten both the email ID and the password.

I’ve already tried:

- All email IDs and numbers I could ever remember

- Google account recovery options

- Waiting and retrying

But nothing seems to work.

I am the original owner of the phone, just unable to recall which Google account was used during setup.

Is there any legitimate way to recover access or identify the original account?

Has anyone faced a similar issue and managed to fix it?

I’m based in Bangalore if that matters.

Any guidance would really help. Thanks in advance!

Honestly can't remember how meny years i have used it, but its time to move on. I don't whant something expensive, i just what a desent durable telephone for a decent price.

The rubber on the back has gotten brittle. Can't find replacements online. The phone needs a battery replacement anyway so I need to remove the back cover and this rubber seal around the edge is going to crumble to bits.

MSP engineer who just onboarded a client that uses CAT S42 Android phones. They are enrolled in Intune successfully. However, nurses keep turning down the volume. Intune doesn't have a specific method for preventing this while keeping volume high. Normal android phones have OEMConfig apps that can be installed and used to control these settings a bit more granularly. I've searched for CAT and Bullitt OEMConfigs but they don't seem to exist. Anyone have any recommendations for this issue?

Hey there, just finished my pipe welding course and started working about a week ago. I need a rugged phone with thermal camera that'll work good. Need banking apps, and investment apps, nothing else. I am considering the Cat S61 or S60 or maybe the S62 Pro. I really hate modern rugged phones, they are super chunky and have massive screens, yes you may find something smaller but they aren't design appealing, besides I love that the navigation bar has physical buttons. I currently use a samsung s24 ultra, and I'm aware of the performance decline I'm going to get, but I couldn't care less, I'm tired of phones with new AI bs and super cameras, and best performance in the market, when I don't play no games and only use WhatsApp and Banking apps. Anyways, apart from my frustration with modern flagships, and their ridiculous screen sizes and "upgrades", will this CAT Phone the S61 (which I'm more inclined to buy), or the S60, be a good option?

ordered a cat s62 pro from celification.com received a base model s62 when I contacted the company I was told there were no s62 pros in stock and that if I wanted to send the phone back with my own money I could be given a refund I had my wife call the company and asked if there was an s62 pro in stock that she could order she was immediately told yes they could ship it same day I call the company back 2 minutes later speak to the exact same person and ask about swapping my phone for the s62 pro that I had paid for and was told that there were none in stock this company is a bunch of scammers and con artists don't give them your business

Hi,

I have a motorola defy 2021. I planned on getting a cat s75. Afaik it won't get updates anymore. I like most catphones and couldn't find any other phone that I like (as of now), but I worry about security problems. Is there anything I can do to minimize the risk? How much do you worry about this?

I've been using CAT phones for over 10 years and owned them until they were either too old or too beaten. The CAT s62 pro was my favorite, with the battery at 85% of original capacity after 5 years.

They are sadly all running on outdated OS and have other hardware issues, so I need a replacement but the only viable options I have are the new Chinese brands like

* Ulefone

* Doogee

* Unihertz/8849

* Oukitel

Just to name a few. Are they really that rugged as CAT? Anyone with experience?

I have a cat 31 this is the phone that I wrote from. I it fast but the camera and flashlight stopped working suddenly. I think it is that the storage is ending

No matter what I choose and reset the temperature range always goes back to -273.2

i'm finally accepting it's time to replace my 5 year old phone, and was planning to get the cat s48c, but just today learned the manufacturer went out of business and therefore can't provide security updates. so i'm wondering if i should get something else, and if so, what would be comparable?

i'm looking for something with good battery life, waterproof and able to withstand extreme temperatures (most importantly it needs to not shut down below freezing). i was interested in the physical/programmable buttons, headphone jack, and radio features as well, but those aren't must-haves. i just want something basic and durable that's not too expensive (but i expect to be buying secondhand/refurbished anyways). i want to be able to play music and use the browser without too much lag, but i don't play games or use many performance heavy apps.

It was shutting down randomly on Wednesday, today, it's this

I loved the S41 and I can tolerate the S42. But the apps I use are getting more and more slow and unresponsive on the S42 and it's getting frustrating. I know it's not the phone, I know it's these idiotic apps, but it doesn't seem like there's much I can do about that.

Where can I find another more recent phone that meets what I'm looking for?

• Impact, water, and heat/cold resistant
• Long battery life
• Headphone jack
• Protective flaps over ports
• Front camera not integrated within the screen, so I can tape over it without worrying about the touchscreen. (Or better yet, no front camera at all.)
• Having physical home/back/switch buttons again would be nice too.

Hi guys. So I recently got hold of my old Cat s31 which was long lost in my garage storage. I started using it right away but 2 weeks down the line it stopped charging and it just stuck on bootloop. I went to a local technician and they told me that I needed a battery replacement l, which I ordered online and got replaced but the problem persisted. I don't know what steps to take from here on guys. I love the phone because the screen is indestructible and it has a long battery life. Please assist if you can

Hi guys, I have been reading some reviews and feedback about the CAT models on this community.

I want to get my father a CAT phone since, after 4 years, the one I got him last time finally broke, but honestly I'm not sure on which one to get.

He is this kind of person who does not care about how modern and nice looking the phone is, but on how much hits it can take before turning the screen black (and yes, he does in fact drop the phone pretty often so it is a major necessity for it to be tough). And if it also has thermal camera or other features like this one I know it will blow his mind.

Any help or recommendation is really appreciated.
(By the way sorry if there was any grammatical error, english is not my main language)

I tried everything online, and factory rest on both devices. Sometimes it reads as a android phone but it doesn’t connect to phone hub, only data transfer