[G1 Android Development] nicksen782:
I have a bricked phone. I believed that I had the newest radio (first from haykuro) then through an unrooting and official install of Cupcake before re-rooting and then reupgrade to JF1.51 (OTA usa) then wipe and install of the 3.34 Cyranogen build.

I decided that I would like to try the new ION build due to the fact that I was having trouble after multiple wipes and flashes with Cryanogen (Browser force closes and then market insufficient space/permissions error.) I flashed, wiped and reflashed... encountered the browser problems, wiped and then reflashed. In the end the "insufficient space" error from the market ended my current experiences with Cyranogen.

The new ION build leaves around 3 megabytes of space left in the /system so I figured that I should flash that new SPL of Haykuro's to gain more space for /system. Actually, before unrooting to RC29, I HAD SUCCESSFULLY installed this SPL and I of course used it to downgrade back to RC29 which would also reinstall the original HTC bootloader. In fact, I never removed the SPL update.zip file from that second SD card and simply just reapplied it.

I did this from the recovery screen with an ALT+S. It verified and installed "hboot" which is the SPL (right?) and asked me to press home and back together (reboot.) So I did. It quickly showed the IC chip on the screen and then the screen switched to my splash1 image (which is a modified one.) The screen hung for like 5 minutes and never went to the recovery mode which I expected.

I'm going to assume that the SPL takes some space from the /cache partition and applies it to /system. And due to a system already on there (system of course) with now invalid partition points it can't boot up. I'll assume this is why it can not boot.

So, I've been under the impression that the radio image simply has not been updating (downgrading actually.) I was pretty sure that I saw 2.22.19.26I as my baseband/radio version. is it possible that I had actually in fact downgraded my radio and that the old version and new version numbers just looked similar to my eyes? This makes since but I was pretty sure that I still had the most recent one by my eyes, although perhaps I didn't.

I appear to have no interface to the phone. No ADB or Fastboot via any point. The points that I can get to and test are when the phone is off, when the phone is showing the splash1 image and when I hold power and the trackball (which make the led light up blue and stay there.) Also, power and home do not bring up recovery and power and camera does not bring up the SPL. No other combination appears to do anything (including power and back which I heard was supposed to be some sort of wipe/factory reset.)

This "Blue Mode" must be something and I have not been able to find a clear explanation of what it is. I am led to believe that it is some sort of very simple recovery tool (that's what I want to believe anyways.) What is this "Blue Mode?" Let's use a name like "Blue Mode" to define this mode because "Blue Light Special" from androiddls isn't a good name considering.

A user here was given schematics of some sort for the G1 and then later gave them to another user who posted them on his website which later had it's account suspended. This JTAG tool sounds good but I would like to know more and of what I CAN DO to assist. I've got myself a broken G1 here and am willing to try anything that makes sense in order to fix it. At the very least, let my loss somehow help someone else (and me in the future.)

@d474rpr The documents on your website are not available because your site is down. A google cached copy could not get me the schematics from your site.

sir*mez says that he used an identical procedure on two different G1s where one bricked and the other did not. His procedure states that he flashed the 2.22.19.26I radio prior to flashing the new SPL. LET IT BE KNOWN THAT I HAVE A PVT BOARD TOO with one success and one fail of this procedure.

If someone nearby (southeastern Michigan) is of developer skill (or whatever it takes) and would like to see my phone, be my guest. :)