I tried everything for my Poco F1 in 2023, some Qualcomm tools, trying to go into EDL mode, using some weird firehose files with the MI flash tool. I read every fucking XDA thread. I even brought that phone to a shady repair service station near me, nothing worked.

The only option I did not use were some sus af indian Telegram channels that sold that service for 20 bucks.

Don't tell me the phone is always recoverable, because sometimes it is fucking not.

Most of the time I find this stuff on 4pda. Sure it's in Russian and it requires an account to download files, but they delve much deeper into the device and usually you'll find working instructions how to unbrick stuff.

Look up EDL mode for devices with a Qualcomm SOC, it usually requires opening the phone to short some pads but you might be able to buy a special cable that does it

You might need to open the case and search for pins surrounding a chip with a TTL device (search for pinouts of your chip), but I guarantee you that the phone is always recoverable

Working with and building circuit testers, I can say those pins also very likely have test pads routed to them for when the board was originally programmed. Look for un-tinned, smallish solder pads that looks like a needle may have pricked them.

Unlesa it's a samsung.

Not if you flash over the earliest bootloader partition

Even with water damage? Had to give up on my trusty old Fold 4 and make a claim. But it's all good cause I was able to take the money and put it towards a shiny new Fold 7 (best phone I've ever owned).

Trust me bro, lying on the Internet is illegal